ML22131A109
| ML22131A109 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 05/05/2022 |
| From: | NextEra Energy Seabrook |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML22131A110 | List:
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| References | |
| SBK-L-22042 | |
| Download: ML22131A109 (145) | |
Text
SEABROOK UPDATED FSAR APPENDIX 2C GEOLOGIC INVESTIGATIONS OF THE SCOTLAND ROAD FAULT (CLINTON- NEWBURY FAULT). NEWBURY. MASSACHUSETTS, AND PORTSMOUTH FAULT INVESTIGATIONS The information contained in this appendix was not revised, but has been extracted from the original FSAR and is provided for historical information.
SCOTLAND ROAD FAULT INVESTIGATIONS CONTENTS I. LOCATION OF FAULT INVESTIGATIONS II. INVESTIGATION PROCEDURES A. Preliminary - General Area B. Final - Property of Marion H. Marshall Estate III. TECHNICAL INVESTIGATIONS A. Seismic REfraction Survey B. Borings Investigations
- 1. Soils
- 2. Bedrock
- c. Trenching Investigations
- 1. Trench 1
- 2. Trench 2
- 3. Trench 3
- 4. Trench 4 D. Age of Pleistocene Deposits E. Petrographic Examinations F. Radiometric Age Dating IV. CONCLUSIONS References
Figure 1 Location Map - Regional Fault Investigations Figure 2 Location Map - ~cotland Road Fault Investigations Plate 1 Site Plan - Sub-Surface Investigation Plate 2 Geologic Map - Scotland Road Fault Plate 3 Geologic Profile - Scotland Road Fault Plate 4 Surficial Deposits and Trenches Seismic Refraction Survey Geologic and Soils Logs Petrologic Examinations Radiometric Age Determinations
PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION SCOTLAND ROAD FAULT INVESTIGATIONS Investigations have been conducted over a portion of the Scotland Road fault in Newbury, Massachusetts, to determine the presence I lo-cation, orientation and physical characteristics of the fault, and to examine the nature and structure of the unconsolidated Pleistocene deposits which overlie the fault trace. The investigations have indicated that the fault structure is of Permian age I and that Pleistocene deposits overlying the fault zone show no evidence of movement on the fault subsequent to their deposition .
I. LOCATION OF FAULT INVESTIGATIONS
.The Scotland Road fault was inferred by A. F. Shride of the U. S.
Geological Survey (Shride; 1971) to trend easterly through the towns of West Newbury, Newbury and Newburyport, Massachusetts, about 7 miles to the south of the proposed Seabrook Station (see Figure 1). Shride has interpreted the Scotland Road fault to represent the eastern portion of the Clinton-Newbury fault, which is inferred to trend northeasterly for about 60 miles from the area of Worcester, Massachusetts, to project offshore at Plum Island, Newbury.
2 Detailed investigations to locate and examine the fault and its over-lying Pleistocene deposits have been carried out just to the north of Scotland Road near the north corner of Newbury, Massachusetts, in an open field owned by the Marion H. Marshall Estate (see Figure 2) . In this area, the fault forms the boundary between Newburyport granodiorite of presumed Devonian age on the north, and an unnamed complex of diorite and schist of unknown geologic age on the south. Diabase dikes of prob-able Triassic age intrude both the Newburyport and the unnamed diorite/
schist on both sides of the fault.
II. INVESTIGATION PROCEDURES A. Preliminary - General Area As preliminary investigation of the Scotland Road fault zone I J. R. Rand walked portions of the fault trace, and inquired of A. F. Shride by telephone as to his studies of the fault zone in the area. R. J . Holt of Weston Geophysical Research I Inc. , and J. R. Rand together viewed the inferred trace of the fault zone between Plum Island and Groveland, Massachusetts, by helicopter flying at various altitudes. Diorite ridges aligned parallel to I and about 1000 feet to the south of the trace of the Scotland Road fault in West Newbury are readily seen from the air 1 but no anomalous physiographic features were noted along the trace of the fault itself. Backhoe trenching investigations over the inferred trace of the fault were attempted on the farm of Miss Alice Elwell, adjacent to Holman Lane,
3 West Newbury. This exploration, ultimately involving a 232-foot trench excavation in boulder till, sand-cobble till and clay till, was terminated because these glacial materials did not appear suitable for demonstrating the presence or absence of tectonic fault deformation.
B. Final - Property of Marion H. Marshall Estate As geographic control for all investigations at the final study area on property owned by the Marion H. Marshall Estate in Newbury, a stadia survey of the area and a base map showing all pertinent features were provided by McKenna Associates, Engineers, Portsmouth, New Hampshire (see Plate 1) . Technical investigations in the study area have included a seismic refraction survey; the excavation of four backhoe trenches; and the drilling of nine core borings. Laboratory investigations conducted on drill core samples from the study area have included petrographic examina-tions and radiometric age dating.
III. TECHNICAL INVESTIGATIONS A. Seismic Refraction Survey A seismic refraction survey was conducted across the study area during the period November 5-19, 1973, by Weston Geophysical Engineers, Inc.,
Weston, Massachusetts, to determine thicknesses of unconsolidated overburden and weathered rock materials , as well as velocities of the various geologic materials in the study area. Technical details of this survey are presented in a report by Weston Geophysical Engineers, Inc., attached herewith.
4 This seismic survey report concludes:
11 The bedrock surface, as interpreted from seismic data, does not have any sharp breaks indicating faulting. The seismic velocities of the bedrock do not change sufficiently along the 1000-foot line of investiga-tion to indicate the presence of any significant bedrock anomaly. The fault* zone does not exhibit significant velocity differences from adjacent bedrock."
B. Borings Investigations During the period December 4, 1973, to February 13, 1974, nine borings were put down along the centerline of the seismic refraction survey (Seismic Line 11 A11 ) to locate I define and sample the Scotland Road fault zone (see Plates 2 and 3). These borings, designated SRF-1 through SRF-9, were drilled by American Drilling and Boring Co., Inc. I East Providence, Rhode Island I under the supervision of Geotechnical Engineers 1 In,c. I Winchester, Massachusetts. Geotechnical Engineers' personnel logged the unconsolidated soils materials in these borings, and J. R. Rand logged the bedrock cores . Detailed logs of these borings are attached herewith.
- 1. Soils The unconaolidated soils materials encountered in 7 of the study area borings include a blanket of silty clay ranging to 40 feet in thickness,
5 overlying sandy deposits of varying grain sizes which range to 55 feet in thickness . Locally, a basal section of boulders of a few feet in thickness underlies the sand deposits immediately upon the bedrock sur-face. Soils materials were not sampled in the two angle borings, SRF-5 and SRF-7.
Plates 3 and 4 describe J. R. Rand's interpretation of the strati-graphy of the soils materials along the line of borings. The geologic interpretation is that of a blanket of glacial-marine clay of late Pleistocene age overlying glacial outwash and marine sands, all underlain by a smooth bedrock surface on which were deposited discontinuous thin sheets of glacial till or ground moraine. The sands in borings SRF-1 and SRF-4, on the southeastern end of the line of borings I are largely yellow-brown, medium- to coarse-grained, and resemble glacial outwash. The sands in SRF-6 1 SRF-9, SRF-2, SRF-8 and SRF-3 are commonly finer-grained and gray in color, and contain occasional thin interbeds of gray clay. ,
These sands underlying the northern part of the line of borings are in-terpreted as having been derived from erosion of the outwash, with rede-position in the near-shore marine environment prior to I but historically essentially contemporaneously with deposition of the marine clays. The boundary between the two types of sandy deposits is in the area of SRF-6, where the elevation of the top of the sandy material is low I and the over-lying clay blanket is thick.
6
- 2. Bedrock The bedrock in the study area has been defined by outcrops of Newburyport granodiorite at the north end of Seismic Line 11 8 11 , and by the nine borings which extend intermittently from the outcrop area on the north to Scotland Road on the south. The Newburyport outcrops at the north end of the line consist of massive, mottled pink and green I medium-grained granodiorite which exhibits saussurite alteration of feld-spars and chloritization of biotite. The rock does not show evidence of shearing on the outcrop surfaces.
Proceeding southeasterly along the line of borings 1 the bedrock is seen in cores from SRF-5, SRF-7 and SRF-3 to become progressively more altered chemically and more deformed mechanically, becoming light tannish-green in color 1 and medium-fine grained and foliated in texture and fabric.
With continued distance to the southeast, the bedrock in the hanging wall of the fault is seen in SRF-7 I -8~ -2, -9 and -6 to be an intensely de-formed, light yellow-green welded breccia or cataclastic rock. All of the rock in the fault zone is compact and well consolidated, and no zones of clay gouge or other unconsolidated crushed or sheared materials were encountered in borings in the study area.
Borings SRF-7, SRF-8 and SRF-9 all progressed through the intensely deformed portion of the Scotland Road fault zone into unaltered, dark gray diorite and schist of the unnamed complex which lies to the south of the fault.
7 In each of these borings, a thin (I" to 2 11 ) , tan aphanitic rock layer was cored about 5 feet stratigraphically above the horizon where altera-tion and cataclastic deformation ceased, and this thin marker has been termed "mylonite" on Plates 3 and 4. Borings SRF-4 and SRF-2 drilled only unaltered bedrock of the diorite/schist complex.
Core in borings SRF-2, -3, -7, -8 and -9 was taken with an orienting barrel. Orientation measurements made by Geotechnical Engineers consistently show schistosity or foliation fabric of cores of the fault zone in these borings to dip in the range 35° to 60° toward the north or NlOOW.
On Plate 2 the subcrop of the footwall of the fault is interpreted to strike I
N80°E and to dip to the north at an average of about 44 °. The trace of the footwall lies within only about 150 feet of the location inferred by A. F. Shride from his regional mapping studies. The true thickness of the rock section subject to mechanical deformation in the fault zone ap-proaches 300 feet, indicating that the Scotland Road fault is a regional tectonic feature of major geologic significance.
C. Trenching Investigations At various times during the period November 20, 1973 to March 4, 1
197 41 four backhoe trenches were excavated in the study area to expose and examine the glacial-marine clay which overlies the Scotland Road fault zone (see Plate 2) . In all trenches I the organic topsoil zone was about 6 inches to 8 inches thick overlying weathered clay I and was continuous and lay parallel with the nearly planar surface of the study area field.
8
- 1. Trench 1 Trench 1 near the north edge of the fault zone, was excavated on 1
November 20, 1973, in massive olive-gray clay to a depth of about 12 feet at the north end of the trench, and was carried for about 150 feet toward the southeast with a depth of 4 feet to 5 feet. A 2-inch to 3-inch layer of fine laminated silty sand occurred in the clay at a depth of 3 feet to 3! feet below ground surface 1 sloping gradually to the south. This laminated sand-silt layer was continuous and not disrupted in the southern 100 feet of the trench. At the northern end of the trench, the sand-silt layer merged upward into the weathered portion of the soii zone and became unidentifiable.
- 2. Trench 2 Trench 2, to the south of the fault trace, was excavated on Decem-ber 12, 1973, to a depth of 7 feet to B feet in clay, and was carried north-westerly for about 50 feet until collapse of the trench walls terminated the work. This trench exposed a thin, flat-lying laminated sand-silt layer in the clay at a depth of about 6 feet. This sand-silt layer generally resembled that found in Trench 1, although the layer was saturated in Trench 2, and small springs issued from it locally when cut by the backhoe bucket.
- 3. Trench 3 Trench 3 was excavated across the fault zone from south to north on February 26-27 I 1974, for a total length of 435 feet and to an average depth of about 7 feet. The trench was cut in olive-gray clay which was internally
9 mas$ive, but which had a thick-bedded characteristic which permitted measuring the gentle undulating layering structure in the clay. Strike-and-dip plots of these layering features are shown in plan on Plate 2, and the projected layering of the clay is shown schematically in profile on Plate 4.
In addition to gross layering structure seen in the clay throughout the length of the trench, a 2-inch to 4-inch laminated fine sand and silt layer was identified within the clay overlying the footwall trace of the underlying fault zone. This sand-silt marker layer dipped northerly out of the weathered soil zone at about 100 *feet north of the south end of the trench, and sloped northerly into a synclinal sag at 135 feet north of the south end of the trench, to rise back into the weathered soil zone and be lost about 170 f~et north of the south end of the trench.
The structure of layering in the clay throughout Trench 2 forms gently undulating, open folds which appear generally to parallel the. upper surface of the underlying outwash and marine sand deposits. No tight or abrupt folds were seen to disrupt the continuity of layering in the clay, and close examination throughout the length of the trench failed to detect any drag folding within the clay beds. The clay is jointed throughout the trench area, with joints tending to change orientations to conform to changing attitudes of the broad undulations in clay layering.
- No slickensides or other evidence of displacement were detected on any joints in the trench. No
10 sand dikes cutting across clay layering or filling joints were found.
No offsets were found in the thin, saggeq sand-silt marker horizon which was interbedded in the clay between Stations 100 and 170 in Trench 3.
Between 55 feet to 65 feet north of the south end of Trench 3, the backhoe excavated a pocket into the floor of the trench to a depth of about 14 feet, to determine whether there were any stratigraphic changes to that depth which might be useful to examine while proceeding northerly with the excavation across the fault zone. To the 14-foot depth tested, no sand layers were seen in the clay, and the pocket was backfilled to restore the trench floor to the normal 7-foot depth. Within a few moments of completing and tamping the backfill, several springs erupted from the trench floor within the backfill area, with artesian flows rising 1 inch to 2 inches above the floor of the trench. Fine gray sand suspended in the flowing waters of the several springs rapidly built sand cones several inches thick around the springs . A dam was built across the trench to the north of the springs, to protect the proposed excavation to the north from flooding, and thereafter the southern 80 feet of the trench filled to within 2 feet of ground surface, with the highly mobile fine gray sand continuing to be deposited from the springs onto the floor of the flooding trench.
- 4. Trench 4 Trench 4 was excavated on March 4, 1974; in an attempt to locate the westerly projection of the laminated sand-silt marker horizon found between
11 Stations 100 and 170 in Trench 3. A similar layer was found in Trench 4, taking the form of an open synclinal sag which plunged gently to the north-east toward Trench 3. Spoon sampling of the soils in Boring SRF-6, be-tween the two trenches, also had detected a sand-silt layer in the clay at an elevation corresponding with that which projected between the two trenches.
Various points on the sand-silt horizon in each of the two trenches were then surveyed in by McKenna Associates in order to provide lo-cations and elevations with which to define the structure of the horizon as it passed over the footwall and portions of the intensely deformed base of the Scotland Road fault. These surveyed points are designated points "A" through "J" on Plate 2. The structure of the horizon is defined in plan in an insert on Plate 2, and in profiles showing. the east wall of Trench 3 and the east and west walls of Trench 4 on Plate 4.
As shown on Plate 2, the structure of the sand-silt marker horizon takes the form of an open, doubly-plunging syncline which strikes south-westerly across the footwall of the fault. No offsets of the sand-silt layer were detected in either trench, and no abrupt folding or drag folds were detected in this layer or in the clay beds in either trench. The sand-silt layer in both trenches does not apparently thicken or show increased grain sizes toward the trough of the syncline. No sand dikes were found in Trench 4, nor were joints slickensided.
12 No evidence was found to suggest that the synclinal structure of the sand-silt layer crossing the fault in the area of Trenches 3 and 4 was formed by other than passive deformation due to differential settlement of the underlying clay. The relatively non-compressible outwash and marine sands underlying the clay in the study area are at a low elevation beneath the area of this synclinal sag, and the relatively compressible clay section is thick. Conversely I the sand elevation is high and the clay is thin as seen in borings put down to the north and south of the sag. With the gradual post-depositional compaction of the clay materials through time I the thicker clay sections settled more deeply than the thin clay sections, passively producing sags in the originally horizontal layering of the fine-grained clay deposits.
There is no detectable sag in the topsoil zone which overlies the synclinal sag in the sand-silt marker horizon in Trenches 3 and 4, and there is no noticeable variation in thickness of the topsoil zone in these trenches, Since the sand-silt layer does not thicken or show coarser grain sizes toward the trough of the synclinal sag, the sand-silt layer appears to have been deposited on an originally horizontal surface which lay strati-graphically above the present ground surface. Differential settlement and sagging of the sand-silt horizon must have been completed prior to the last erosional beveling of the present ground surface, presumably upon retreat of the last post-glacial marine transgression, since the topsoil zone built
13 upon this beveled horizon shows no evidence of having sagged over the sand-silt sag or over any other of the gently undulations seen in the clay layering throughout the length of Trench 3. There is no evidence of dis-ruption of any of the sedimentary layers overlying the fault zone in any of the trenches I to suggest movement on the Scotland Road fault subsequent to deposition of the overlying Pleistocene deposits.
D. Age of Pleistocene Deposits
- No shells or other organic materials were found in the clay in the study area with which to establish an age of deposition of the clay. The clay deposit is I however, considered correlative with similar glacial-marine clays which blanket portions of the seaboard lowland throughout eastern New England.
Borns (1973) reports that 11 a major amelioration of climate began prior to 14,200 years ago which resulted in a rapid dissipation of the ice sheet .
in New England at least by 12 500 years ago" .
I The recession of the ice sheet was accompanied by a marine invasion of the seaboard lowland, with deposition of glacial-marine clay sediments. Borns brackets the time of deposition of the glacial-marine clay in the region between 13,500 and 12,500 years ago.
Schafer and Hartshorn (1965) report that radiocarbon dates of shells from glacial-marine sediments on the seaboard lowland in Maine range from 11,800 to 12,800 years old. Kaye and Barghoorn (1964) have constructed
14 a curve of sea-level fluctuations for the Boston, Massachusetts, area which describes the last marine submergence as having ended about 12,500 years ago in that area.
It appears, therefore, that the glacial-marine clays of the Newbury study area are at least older than 11,800 years, and are probably in the range of 12,500 to 13,500 years old.
E. Petrographic Examinations The petrography of eight samples of drill core from borings in and adjacent to the Scotland Road fault has been described by Professor Gene Simmons and Dorothy Richter of Massachusetts Institute of Technology.
Sample Boring Depth (feet) Description SRF-lA SRF-1 74.0 to 74.4 Amphibolite breccia SRF-2A SRF-2 60.0 to 60.4 Mylonized quartz-muscovite schist SRF-2B SRF-2 72.9 to 73.4 Brecciated quartz-muscovite schist SRF-3A SRF-3 67.0 to 67.5 Muscovite mylonite SRF-4A SRF-4 92.9 to 93.3 Chlorite augen gneiss SRF-5A SRF-5 42.1 to 42.6 Sheared granodiortie SRF-5B SRF-5 175.1 to 175.6 Altered olivine basalt SRF-7A SRF-7 115.9 to 116.4 Ultramylonite Simmons and Richter conclude from their studies that "the samples (with the exception of sample SRF-5B) all show evidence of dynamic defor-mation; that is, cataclasis, brecciation and intense crushing--all probably due to motion along the fault. The deformation clearly took place after the regional metamorphism of the rocks (which was probably associated with the Devonian Acadian orogeny). The microcracks produced in the deformational
15 events appear in thin section to have either annealed I or have been filled by secondary minerals. There is no firm petrographic evidence of recent deformation of these samples 11
- The complete text of the Simmons and Richter report is attached herewith.
A further indication of the old age of deformation of the fault zone is evidenced by sample SRF-SB I from a diabase dike which is enclosed within deformed rocks of the fault zone. Petrographically the dike is seen to be completely undeformed. The dike has been dated radiometrically (K-Ar) at 199+/-9 million years.
F. Radiometric Age Dating K-Ar age determination have been obtained on six samples of drill core from borings in and adjacent to the Scotland Road fault by Geochron Laboratories, Division of Krueger Enterprises 1 Inc. , Cambridge, Massachusetts.
Sample Boring Depth (feet) Material Age SRF-SA SRF-5 42.1 to 42.6 whole rock 272 10 M.Y.
SRF-3A SRF-3 67.0 to 67.5 whole rock 269 10 M.Y.
SRF-2A SRF-2 60.0 to 60.4 whole rock 256 10 M.Y.
SRF-SA SRF-8 155.6 to 156.0 sericite/ 248 9 M.Y.
feldspar SRF-lA SRF-1 74.0 to 74.4 amphibole 324 14 M.Y.
SRF-SB SRF-5 175.1 to 175.6 whole rock 199 9 M.Y.
Samples SRF-SA, -3A, -2A, and -SA are from within the fault zone; SRF-1A is from the diorite/schist complex which lies to the south of the fault zone; SRF-5B is from an undeformed diabase dike which is enclosed within deformed rocks of the fault zone (see Plate 3) , Of apparent geologic
16 interest is the fact that radiometric ages increase progressively with distance from the footwall of the fault zone. SRF-8A is from about 5 feet above the mylonite band near the footwall of the fault, whole SRF-SA is in relatively undeformed granodiorite about 250 feet stratigraphically above the footwall. Radiometric dating of rocks within the Scotland Road fault zone indicates that the fault is of Permian age, and suggests that deforma-tion in the zone may have been active through a period of as much as 20 million years. The dike {SRF-SB) which intruded the fault zone is com-pletely undeformed 1 indicating that movement on the fault had ceased by Triassic time.
IV. CONCLUSIONS The Scotland Road fault has been located within 150 feet of the lo-cation inferred by A. F. Shride on the basis of his regional field studies.
Nine core borings have defined the fault zone as being about 300 feet thick and dipping at about 44 ° to the north adjacent to Scotland Road in Newbury I Massachusetts. Chemical alteration and mechanical deformation in the fault zone increases progressively from north to south across the fault zone, and alteration effects of faulting terminate abruptly at the footwall of the fault zone, about 5 feet stratigraphically below a thin mylonite band. The fault is a feature of major geological significance in the region.
The fault is geologically very old I of early to middle Permian age, and the altered and deformed bedrock materials in the fault zone are annealed and compact. No unconsolidated gouge, shear zones or polished joint surfaces
17 were detected in cores from borings drilled across the width of the fault zone. The bedrock surface overlying the fault zone slopes gradually up to undeformed bedrock outcrops at the north edge of the fault zone, and appears from refraction seismic surveys and borings data to be smooth and sub-planar, with no detectable topographic anomalies.
Surficial materials overlying the fault zone include glacial till, glacial outwash and marine sands I and glacial-marine clays, all of Pleistocene age. The youngest of these Pleistocene deposits are the glacial-marine clays I estimated from regional studies to be older than 11, 800 years. A thin, essentially horizontal layer of post-Pleistocene topsoil covers the glacial-marine clay in the area.
Examination of the glacial-marine clay in four trenches excavated over the area of the fault zone failed to detect any evidence of tectonic fault displacement in the clay and its interbedded sand-silt layers. Bedding in the clay displayed no abrupt monoclinal or drag folds. Joints were not slickensided. The thin laminated sand-silt horizons interbedded in the clay were not offset. No sand dikes were found in the clay, which directly overlies deposits of highly mobile fine sand ..
All evidence observed in the current investigations indicate that Pleistocene deposits overlying the Scotland Road fault have not been sub-jected to disruption by tectonic faulting.
John R. Rand Consulting Geologist
18
References:
Borns, H. W., Jr. (1973) Late Wisconsin Fluctuations of the Laurentide Ice Sheet in Southern and Eastern New England. in The Wiscon-sinan Stage; Geological Society of America, Memoir 136; Boulder, Colorado.
Kaye, C. A. and E. S. Barghoorn {1964) Late Quarternary Sea-Level Change and Crustal Rise at Boston, Massachusetts, with Notes on the Autocompaction of Peat. Geological Society of America, Bulletin Vol. 75, 63-80.
Schafer, J. P. and J. H. Hartshorn (1965) The Quaternary of New England.
in The Quaternary of the United States; Princeton University Press; Princeton, New Jersey.
Shride, A. F. (1971) Igneous Rocks of the Seabrook, New Hampshire-Newbury, Massachusetts, Area. in Guidebook for Field Trips in Central New Hampshire and Contiguous Areas. New England Inter-collegiate Geological Conference - 1971.
NOTE: The study area was visited on March 13, 1974, by M. H. Pease, Jr.
and P. J. Barosh, U. S. Geological Survey, Boston. Trenches 3 and 4 were inspected. The trenches were thereupon filled in.
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':-Siff*iA..
- ifti'f/JJA't'Eil"ii£61ifXK SCI/I~
-.,':~~---- ---256-;r= ~- .: ..
SRF*2A '/SRF*34 -269my
'\ '
32t.my SRF*t.A
- "~. ~0 ',
Hoo*
Unnam*d Diorite and Schist '~
..t-.0 ', ... ' ,_SRF*58 Newburyport Granodiorit*
199my
~ ' '
~~ -2t.Bmy (dike)'
- 150' q<: ~RF*SA '
- ~*-
NO APPARENT AI..TERATI<>N ' MOD&RATE DEFORMATION INTERMITTENT LOCAL DEFORMATION 200'
?0 rr 50' 0 0
0
~
GEOLOGIC PROFILE -SCOTLAND ROAD FAULT al PU!ILIC SERVICE COMPANY OF NEW H,O.MP:SHIRE an prornrty of by lPUTE MARION H. MARSHALL ESTATE John R. Rand. conoulling Goologlrt NEV(CIURY, MASSACHUSETTS B
L*ytrlng In el*y jA, a.c. I:IC.
- t..mln*t*d S..dy Iiiii Markor HorirM I SURFICIAL DEPOSITS AND TRENCHES
\
OVff tht D Silly *l*Y
~ SCOTLAND ROAD FAULT ZONE f;~;~:J Fino *lily und r:;::._~r=-_.;.... ----..L---.- . ~-. -.--.-.-""~~~~::::::::::::~:::::::r_o_**_o_*c:::::::::;rl 1o* ~ ..£_........
M/JI'Oportyo/
TRENCH 4 MARION H. MARSHALL E.'STATE f:;:~.;;*:,~.~J Fm* to mtdium und WEST WAL.L IIE.'W8UIIV. MASSACHUSE.'TTS lor If.;. :;?, ~:J Mldlum to CiNr** und PU8LIC SE.'RVICE COMPANY OF NE"W HAMPSHIRE by h*t~*~*::l 6FdVfl John R. R*nd Con*ulllng Goo/ogi*t
~ Bouldff& ~*13*74 IPLATE' I SE NW CE No Appar~nt Allot* tiM du* to SCotl.wl Ro.td F*ull
', Modflr4ft Dtformetion SO'
ATTACHMENT No. 1 SEISMIC REFRACTION. SURVEY SCOTLAND ROAD FAULT ZONE NEWBURY, MASSACHUSET TS WESTON GEOPHYSICAL ENGINEERS, INC.
for PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE
SEISMIC REFRACTION SURVEY SCOTLAND ROAD FAULT ZONE NEWBURY, MASSACHUSETTS for PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE WESTON GEOPHYSICAL ENGINEERS, INC.
WESTON. MASSACHUSETTS
SEISMIC REFRACTION SURVEY SCOTLAND ROAD FAULT ZONE NEWBURY, MASSACHUSETTS INTRODUCTION A seismic refraction survey was conducted across the mapped lo-cation of the Scotland Road fault, as originally mapped by A. F. Shride (1971) and shown on Figure 1 and Plate 2 of_ the report. Seismic field work took place during the period of November 5 through 19, 1973. The location of this survey is shown on Figure 1 of this attachment.
The general purpose of this work was to determine thicknesses of overburden and weathered rock materials as well as the velocities of the verious geologic materials existing at this location.
RESULTS The results of this refraction survey are shown on a profile of the bedrock surface (Figure 2) . Also shown on this . profile are overburden and bedrock seismic velocities, boring locations, and bedrock depths as found from borings as well as the fault zone, as indicated by J. R. Rand.
The bedrock surface, as interpreted from seismic data, does not have any sharp breaks indicating faulting. The seismic velocities of the bedrock do not change sufficiently along the 1, 000-foot line of investigation to indicate the presence of any significant bedrock anomaly ..
The fault zone does not exhibit significant velocity differences from the adjacent bedrock.
\ .)(
\ X
\
SEISMIC LINE LOCATIONS SCOTLAND ROAD FAULT PUBLIC SERVICE CO. of NEW HAl\1PSHIRE SEABROOK NUCLEAR STATION Figure *1
LI~E A ELi-50 10+-0 9+0 e*o 7+0 6+0' 5+0 4+0 3+0 2+0 1+0 O+O Et...+50 2000 :!:..FT./SEC.
SRF-$ SRF-7 SRF-'3 SRF-8 SRF-2 SRF-9 SRF*6 SRF'!'4 2000!FT./SEC.
17,000 t FT. !SEC. 4800 -5000'"FT./SEC.
4800-5!000 FT./SEC.
16,500-18,000 FT./SEC.
15,000-16,000 FT./SEC/
14.500 FT./SEC. /
/ / 15,000 FT./SEC. 0.~"-fo/" 15.500 Fl./SEC.
/ SCOTLAND ROA9VFAULT ZONE ~~
<E.- - - INTERMITTENT I..OCAL DEFORMATION
- 7. MOOI;RATE DEFORMATJON /'
- INTENSE OEFO~ 1ATION # NO APPARANT 'DEFORMATION -- - - ~
!0' SCAI..ES
§J d)
NEWBURYPORT OUTCROPS o*
c:9~10+0 WOODED 0
Cl 0
\
~
\
".+
\
SEISMIC REFRACTION SURVEY SCO.TLAND ROAD FAULT AREA 0 100 1
500' NEWBURY, MASSACHUSETTS for PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE by WESTON GEOPHYSICAL ENGINEER, INC.
Figure 2
ATTACHMENT No. 2 GEOLOGIC AND SOILS LOGS OF BORINGS SRF-1 THROUGH SRF-9
BORING LOCATION See Scotland Rd. olle plan INCLINATION~ BEARING---- DATE START /F!Nil!lf _..JDe<!!.!ic.._,.;~.4....J.lz.91!..23_ _ / pee, II 1973 CASINO ID _ _..1!3C.JI!!!n,,___ CORE SIZE 1-7/8 ln. TOTAL DEPTH _ _,6'-'9::.,0::,__ _..:ft"- DRILLED BY American Drilling & Boring Co. j W. Manco GROUND EL IMSLJ ...!1,L,j! DEPTH TO WATER/DATE 0.5 rt I neo. 28, 1973 LOGGED BY Soli - K. Polk* Rook - J. R. Rand
~~ ~~~ff'kT~;
EL.
MSL Depth 1'ype SAMPLE N
ROAF._
JC*Con.taot STIHKE, DIP
- J~~: "" 11 !!1 lij <
BOIL AND ROCK DESCRIPTIONS fl ft and or ADV.
No. Reo, ~ln/f % Graph(
8! (Weathering, defeote, etc.)
-4/Zicm~/*!!!*~*~..:B:.";;.,:;B;*dd:::,:ln::!g~~..;-;;...._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _..j f'l'ype, 18x1ure, mineralogy, oolor,haf'dnt\S!!I,etc.)
8, 1 1;!".***, --~~--~~s~=~S~Il~o~ke~n~*~ld4e~-n~~~~~~~~~~~~~~~~-r~~~~~~~~~~~~~~
1~ .1 L;;'""'"" gray, ?liVe-gray, MO orowl\ smy cay, Low p """';.',',!;w>l', ,.,, : *u!!*:l,""'.(' !!.'
593" 7 *9 , TOP OF CLAY F-r11~tlb mottled graf &cllve brown silty clay, Low lo mod. plasticity. * (lor)
~:;~l~rt~~:~~~. a ~:* L~:r:o>~~~~:':; plnsttolty; w > P. L. *ultor) > u 1. 0 tsf
"'ItY tsf
~~
21
~~
32.3
=~:!
5 8 Similar to S3, but some~ot softer: contAins (ew grey apots to 8 mm. * (tor) 0. 95 tsf 86 31 34.9 Similar to sa, but a after; some i<r>Y spots.
- ltor) 0, 65 tsf u 1-10 Similar to Sample 53, but medium otlff: oontafoo a gray silt layer< o.s mm thick;
4 57 S 37. B
- color varies sHghtly ol!ve-brown to olive-gray. *u "rt_o.-.r)'-~-o*._3._4_t_*_f 13,0 TOP OF SAND 1 F- [
~~I:~ ~f~~ITl :l~~ty~~:~;"~o~l~~~nn::iu:'.:'J~~<t. s~~.~~~~*o~-TO'~~:*~r~~
SB ()
0 u
~ !'~"."i~lse l-20 ( Grsy silty fine *and. UntfoTm: fines are nonpla*tto; very faat reaction to ahak!ng teet.-
S9 9
( 8!0 10 Similar to Sample S9, but also contains a few gmy clay layet's 1-2 mm thick.
30f Sll 9/6" Similar to Sample 89, but also contain* some graY clay layers. -
Sll{.\ 19 Brown sllty fine eand. Unlfonn; fines- a.re nonplaattc; contalne a few ruaty-brown fine sand la.yers.
( S12 :!4 Brown *lightly silty fine to medium sand. Uniform; fines arc nonplastlo; contains a layer of gray clayey Rravell.v sand with subrounded gravel' up to 20 mm in a!ze.
-20 i=-4or 813 26 Brown very sllfl"htly ollty uniform fine to medium aand.
[ 814 31 Llgbt brown
- nty fine sand. Unl!orm; nne* are nonplnst!c; contains a few subrounded coarse a and grains and some rusty-brown tnedlu.m 11and layers.
j:..so ( 815 17 Similar to Sample 814. -
816A 59 TOP OF TILL Similar tn Sample SH.
m.o *
-40 816B 10/6" ~;~~-~:o:~ s ~t! :.:~1fn::O:~i.no:;~~~~c~raded; 1 1 angu ar grains; contains gravel p1eoea J:.oo ~ S17B Sl7A 79 28/6" Light gray fine to medium sand. Un!tornt; ang\ilar to subrounded grains; clean.
IJgbt gray silty sandy gravel. Angular grains; appears to decomposed rock and rock
[!!IRru fragmenttr up to 30 mm ln size.
92/6" ~~lc:~~*tgrf:~~~~ Cl~~~~~~d, Unlformi fines are n<mplastie; contains angular gr.avel lttA 3. 0 TOP OF ROCK Cored boulders,
- 7ft' Joint Fresh and hard. Dr!lls ~*.-* .,o* Diorite. Dark gray with large l?lhorn-
~
NX-3 93 4.2 43 ' Clean well. Only very slight ;. '! ; <; blend cyr*tals i!/2") In tine-grained surface wx effects on ; o.. ~* quart?. diorite matriX-NX-4 98 3.6 83
- 7ff Joint Joints and part lnga. ~1.6, 3' ~Gl.!r.l!a).!;da
- !:.t.l!fo!!!n~al;.,;c:;:o!:'n~ta~c~t..::-...!f~us;::e;:;d,_.--=i
-60 4--4--+--+-~I---.. ...J4-~I----+-----..j;.-+J.;.*:::M:.::I":::":.:r..:w::.:x:..,...___________...l!,.*~* -r* : Diorite. Massive, fine-grntned,dk. graji
~0 BOTTOM OF BORING F-1-
1-N -Standard penotr&tiO<<< r-eolalanoe, blowo/ft Roo - Llmsth NO<>Vel'<ld/lellsth cored, %
NOTES 1)- * (lor)
- Sllear *tren(!th measured SEABROOK STATION RQD - l.ensth of IOW>d core <l ln. a~~d lonrer/l011fllh corod, II. u with Torvano, PUBLIC SERVICE COMPANY OF NEW HAMPIIHRI.E 9 i r.* .................
8 - Split lp<l<)ll umple GrouDdwat.or YANKEE ATOMIC ELECTRIC COMPANY
~ U - Ull<ll.tbu*bed *amplot
'-l 8
- Shelby blb;o N - Deai&OG miiBdlll-118818.--.
~~
F- Flied pl.al<lll p - Pilcher 0 - Olt.orbotr& G - GEl D - Drtlll!IC brnk k - Ceeffloloftt of wx - w..lharett, ""atherlol penneablllty PAGE of J LOG OF BORING SJ!f!
IT BORING LOCATION !lee seotllll1d Rd. otte pltm INCLINATION Vertlcnl BEARING DATE START/FINISH Dec. 7 19?3 / Dec. 10 1973 CASING m _ _.a._.lwn.._.- - CORE SIZE 2-1/B to 1-5/B TOTAL DEPTH _..!7_,_7.'-'6,____n,_ DRILLED BY Amerlgan Drlll. & Boring Co *W, Mann !l.L!unW:r<U GROUND EL (MSL) ...J..l..L....! DEPTH TO WATER/DATE Q,O ft / Deo, 31, 1973 LOGGED BY Sot1 - K Pofk* Rqck .r R R@d EL. ""MP'=~
0 RAT"*** erRQD PRESSURE TEST STRIKE, DIP "'
"' SOIL AND ROCK DESCRIPTIONS MSL ~ OF <Oomputeo r:r~~~tlon !:J < fW..therlng, defectll, ~.) ('t'ype, texture, mineralogy, lt ADV, mm/f KP!!!. k C
- Contact 8 [il color, hardn~*** eto,)
Graphic pal 10""~om/oec B ~Bedding Ill 17.8 r-ll~~~~~~==~~~::::::::
1: l
" Jlo:o::~::~~::+:]s~-t*~s'~'c~kf*n:*:':d*~~ - !1' rov-
~~ i~ '""*
30,1 t/ c~~~':"1~~ ~~ :'n"!'d!u~~fa~t;~ltr: ~;r~. t~ :;rn~~;)'$.~*.8ul~'}" 2)
- 8 54 24 33.8 Similar to Sample S3, but fewer brown epot.; gray streaks to lfmm. *uflor)> 1. 0 ts!
S5 13 35.6 SlmHar to S3tbut fewer brown Apots;rnore gray 8treak~t;somewhat softer. s (tor)~.90tat:
S6 5 35.5 Olive-brown *Illy clay. Low to medium plasticity. *uitor)
- 0, 50 tst u 10 87 5 49.5 Similar to 86, but no dark brown spots; soft to medium atJ[f; alightly at!cky.
- u (tor) = 0. 23-0.30 taf r ss 52,5 Gray to olive-gray silty clay. Vary soft to soft: medium to high plasticity; slightly 0 "et!cky. *ultor) = 0.15 tsf
~0[ S9 37,8 Similar to Sample S8. *u (tor) n 0.18 to!
TOP OF SAND
~4.0( Gray ver;y silty fine sand. Uniform; fines are rJenerally nonplasuc*, but contains a few 810 gray clay pockets up to 8 mm In size *
...30 ( 811 10 Similar to Sample B!O.
[ Sl2 13 Gray-brown ffne to medium sand~ Unifo't"tn; subrounded grains; clean.
-20 t-40 [
Sl3 Light gray rlne sand. Uniform; clenn; contains one 8 mm size aubrounded p:leoe gravel
[ 814 Similar to Sample 813.
-50 NX-1 TOP OF ROCK i'll.S '\'.\,-.:
~
- 4) 52° "No sl!okeno!des Not notnhly wx. Altered ~'\jo ,- Catacla8tlc rook, Mottled light N'X-2 100 32 49° by metamorphic procesB "::):'. ~!" yellowish gre~n., flne-grained
-40 53° to light yollow green .'\).. \,. matrix. Foliated with rounded
-so NX-3 100 23 41io oolor. Not allekeno!dod,:}: *~). P<>hblo-llke breco!a, nnd sworleJl s5* ! ,~',.' feldsp*thlc IUld chlorlt!c foli-so* Joint 46° j Frcah. Drills well. Part \ "':'~'
>r:,,.,..,
allons. Thin !eldopathlc etr!ng-
~
BX-4 100 4.7 67 ' Minor rusty lngs and aomc high-angl er: and irregular veinlets dip Joints ahow crusty our- '\.:::' 35 to 4o" opP<>BI'> to dip or fol!-
-70 BX-5 100 2.6 55 4i' faca wx effect -;...* ~': \
enaideR or other recent ~*:;;.(' Cross-aUon. Cross-t~trlngen.
40° -
rfnted m ovcments. *A: atrtnge:rs 42° trto<l llX-6 100 2,0 100 "'"
-60 :ns ~/.:"'\
BOTTOM OF BORING -
t-N Standard penetrat!oa """i*tance, blowo/lt NOTES Reo
- Llmatl> 1'0oovered/leJl!ilh cored, 'I> 1) Cored two bouldero from 41.5 II to SEABROOK STATION RQD- Lon,U. ol aOWid co~e 4 Ill. and longer/len,U. coNd, '1. 50.5 ft. PUBLIC SEIWICE COMPANY OF NEW HAMPSHmE
~ ll
_ U
- Split II>OOD oample
- Uudllturbed sample*
J Gl'<>!mdwat..r
- 2) *u(tor) ~Shear stNngth maaoured YANKEE ATOMfC ELECTRIC COMPANY
§ S
- Shelby tube N
- DoniiOCI with Tornne
- 3) SlA ~H6,2, S1B*3L7 ll!fllu'IIIBd 111111118818 * ...-........~
~---*-~~
F- Fixed pU.!Oll P - PIU!Iu!r o- Ooterberg G- GEl 4) Rate of advance not available lor Date: January 10, 1974 NX*l through 3. Project 7281 D - Drllltn1 i>N!ak k - Coefttolent o/
""'
- We&lllered, wealher!Jli penneabtllty PAGE or r LOG OF BORING SRF 2
BORING LOCATION See Sogtlalld Rd. site pion INCLINATION~ BEARING---- DATE START/FINISH Dec. 11, 1973 I Dec, 19 1973 CASING ID _ _,3_.tn,.,.'---- CORE SIZE 2-1/8 to 1-7/8 tn. TOTAL DEPTH _,:9~5;c,O'---...!I;!..I DRILLED BY American Drilling It Boring Co.; Manco GROUND EL IMSL) 17, 9 ft DEPTH TO WATER/DATE o.o It I Dec. 31, 1973 LOGGED BY SoU- K. Polk* Rook- J, R. Rand or RQD STRIKE, DIP EL. SAMPLE RATE 0\j~i~::.r PRESSUII E TEST F
- Foliation SOIL AND ROCK DESCRIPTIONS MSL Deptl>nl'l)pe N OF Compute~ J ~Joint tweolberlng, defect.,, ete. J (Type, texture, mineralogy, a11d or ADV, Sl!!!!. -!k C =Contact oolor. hardneas, eto.)
It ft No. Rec, ~In/! % Graphic pot 10 om/aee B = Bedding
~*
S=
!7.9 4 .v.v
~2 19 29.1 S3 33 27.8 i- 36.3 It S4 9 1 37.7 45.0 r-1o ~ 43,S 2/6" 51.9 (sa 2 55.4 Similar to Snmplo S7A. "u(tor) = 0.12 tsf.
0
- -'2° [ 89 3 50.9 Stmll*rto Sample S7A. s (tor)
- 0,15-0,19 taf u
[ 510 2 36.3 Similar to Sample S7A,. but alar> contains a few silt lnyert:~ < 0. 5 mm thfck; co!oT varte.s slightly lighter nnd darker. "u(torl ~ 0.18 tsf TOP OF SAND
~o L Sll 16 Grny layered soft stlt,y clay and silty fine &9,lld. Layere nre 1-5 rnm thick.
[ 12 8
-20 TOP OF TILL 38,0 f:-!o ~;a !... ~:.. TOP OF ROCK 42
~I 45: jofnt .. roety FA.[rly fresh (as for wx} ~~ '}";. ~ Altered diorite I?). Fine-
~X-1 97 3,0 43 r:.::uf~~"!x but is altcrt'd, presurn- :~ ~ grained, light gray-green ably hydrothermally, to ~' !' matrix wlth medium-grained I'X-2 97 3.2 47 Vuggy a Hght gray-green to tan ~Tan feldspar phenocrysts. Sonse-
~0 io"joint green oo]or. Joints show .,;._;:,..,!diabase of vague foilatton thl'Ollgbout.
sllght rusty wx cff~cta. ,~-~ ...~._'
~X-3 100 4.0 77
"~:
-40
\ '::i...t Quartz-1:-;;o ~X-4 ]00 3.8 87 Fresh, buf n:lferod hydro " ' '"} Pink feldspar 61. fi' *-
thermally lo li~hl green- ~..:_. Epidote Faull hlock ( ?) Fusod, tight NX-5 ]00 4.2 75 loh (~pldoto) gray. Joints *. ~~.* ' contncts-Mtahlc epidott,atioli And prrrtlngA are not ... ~ -~ ClAystone stt'Ong foliation. Fine-g~lnf:\
- llokonsldorl, not pnl!oho :.~
- Oougc to vc~ flnc-*ro!ned locally
- -ro
- 2) f *" :.,: Epidote 'J ,.
- NX-6 100 4.0 82 "-<, ~~!g?p~hi<cd light grzy to -
NoQ};, 3ANW !*' Rough .~
[NQ-7 100 68 N83W, 46NE J ':\:-~>- Altered diorite r?). Moder-N89E, SJNW F Driller Frcsh, lrut altcro<l hydto '~'i:j atcty foliated, sauasur!tized ground !berm ally. ()uart?./pyrlt ~ :{', j feldspar phenocrysts tn ftne-
~
-60 !;Q-8 100 3) 52 E-eo minernllullon conforms to foliation. Joints are 1>::._ 'S",
~**Pyrite grained matrix. Appea.N to_
be moderately follaled New-
'NQ-9 95 61 Gl"Join! not sliokenaidcd. I'>~' buryport Diorite.
t1 t!BS~: U>>~ ~
MRgw, ~9J'i.:~
Rough surfuoe ,-. }
Fairly fresh, but altered.~~'\,,
~Q-10 100 72 J
~
Jointfl not slickensided o .-
~0 tl~~~; li~l ~ polished. ~~') i
~Q-11 100 63 ~A~~~ 4NE f, &:~"<..,**
95 BOTTOM OF BORING
~ -
NOTES SEABROOK STATION 1)
N - Standard penetratloa re1 lotanoe, blows/ft Reo - Lenglh ...,covered/l*nath cored, %
RQD - Lenglh o! aOW>d core 4 ln. ed looger/leoglh corod, % *uttor) = ~::~:~:.~.h measured PUBLIC SERVICE COMPANY OF MEW KAMPSHmE
§! S - Split opooo nmple J GrOW>dwater YANKEE ATOMIC ELECTRIC COMPANY l'ol U - UDdiJiturbod oampleo 2) This !s only a partial !let of d!p and strike data. fl'..fl U'llt.Bd anghaa *...__
§ S - Shelby tube N - Deol""" 31 Rate of advance not available for ~ ........,....., ~~
F- Fixed pfol<lo P - Pitcher NQ-8 through NQ*ll.
o- Ooterbors G- GEl Date: February 13, 19?4 Project ?288 D Drilling break k - Coo!floient of
""' - Weolllered, weathering penneablllty
- Used 300 lb homm.er. PAGE of } LOG OF BORING SRf3
BORING LOCATION See Scotland Rd. *ltc plon INCLINATION ...Y!!!i!£llL BEARING - - - - DATE START/FINISH Dec. 20 1973 I Jan. 3, 1974 CASING lD --"'3...!1!!:n.:.___ CORE SIZE 2-1/8 to l-7 /B in. TOTAL DEPTH _ _,9'-'6"'.0"---'f::,t DRILLED llY American Dri!ling tr Boring Co
- W. Mnnoo
~--G~R-O_UN __D_E_L__rM_s_L~)~T1~7*~"~*,f~t~~D~EP_T_I_I__ TOW~A~T!E~R~/D~A~T:!E-=~~O~,O~~~~f~t~/~~Jn~n~.=2~l~n;7=*1~~~LO~G:~~E~'D~B~Y~~S~o!~I~-~K~*~pq~l!k*~R~o!gk~-~~~~~~~R~o~n~d~~~~~~~
EL.
MilL Depth Type SAMPLE and N
BATE or ADV, 0F WATER or. PRESSURE TEST 1!1!!!!.
<;om puled k
r:
STRIKE, DIP r~:~~tlon C ~ Contact SOIL AND tWeathertng, riefecta, etc.}
ROCK DESCRIPTIONS
!Type, texture, mlne:ralog,y, eo1or, 'ha:rdne!'IB, ete. l It ft No. Reo. roln/1 % Graphic p*l lo-4 cm/aec B
- Beddln~
0 l& 6 lffsws:._~...!l~3-f---~I34!:3~** ~0--------~--1--~T~O~P---1~0~F~S~A~N~I~>--1~-P.G~*r~n~vs~ll=.tv~cl~n~v.,~~~~o~<~liu~m~"~t,~*rr~*~m lnyon~ up tn 20 mm thick nesu hottom 7c~d~lu~n~l~to~h~l~*lh~nlln~a~ll~c
- .Ru<tor'f"" 0. :lO 7 1lv~:,~o<o~nttJn~!!n~:*~*~o~m~e~a~l~lt~vf~ln~r~s~n~nd~
tsf
- --zo [ RO 10 Light grny otlty fino ann~. Unifonn; floes nrc nonp!ostlo; very fnat reaction to *nakinjl;-
test; contnlm1 n ft'w oJny lnyr:n~ up tt, 1 mm thick.
(RIO 30 Slmilnr to Snmplo 59, hut contain* cloy layere up to 5 mm thick.
ao [ '"'11
~' 34 >>rown medium to coar.sC' ~t~nd. Uniform; subroundvcl grains; contains a few olive-brown -
34.0~--~---f----~--4---------~--4-_JT~OUP~~~O~P~*~T~lLdL~--~+-~c~lo~vlllo~v<or~suu~nt~nw8Ln~l~mLUth~!c~kwM~dwnL~kc~ww~~rn~\VO~It~n!<e~c~e~s~un~t~o~1~5~m'ma~*n~****~**---------=J
[ S12 15 Gray-brown Rilty grnvo11y sand. Widely graded: subangular to subro.mded grainBi fines
-20 fft'C nonplastic; oontnJns a fe>\ gravel piecea up to 20 mm in size.
0
~ [ 813 17 Brown gravelly silty lmnd. Widely graded: 6Ubrounded gmlns; fines are nonplastfc; aotl tnins a few grnvel pieces up to 20 rnm in siU!.
[ S!4 18 Similar to Sample B13, but also contains subangular grains.
- -so ( Sl5 Similar to Snmplc S1~, IJul olcnn. -
( Sl6 ]5' Brown modium Rand. Unifonn; Rubmunded gratns; cteun.
-40
- "' NX-1 100 3. 6 o V'j /;lj
~Q rl----+--~--~~--+-r-~-r~---4--~T~O~P--~O~F~R~O~C~K~--f-~\--------------------------~"'~"-------------------------i
,Rusty Fresh !ntcrnnlly. l.ocnlly~~\"'
~ ~-,:'1 Schist. FPld*pathlc, fine-VI /I /I /
~Soft-fissile is subject to sovt*rc wx~ ;.,"'**~).~ grained medium daTk p:ray (ofl-aoftoning. Pn rls on foli- \\\'\ , \lt!On matrix with disseminated J:J/I N'X-2 77 5,7 0 atlon. Not sllckunsl<led. \ C\(\ i moolum-gmlncd fel<lspars. Not 1
r \;-\'{j nltcred. May be foliated diorite-:
NX-3 100 3.1 14 Strlatrd 11 Chlorite 'i~'\ '\~ Apparent narrow fault zones or r:;z. 5-85' And 88. 5L NX-4 83 4. 0 0 V~ ~L jFault-narrow FreAh. Clos<ly hrokcn '~"
on'\\~\\
~hcara nt 17',
Hnve fclrispnr stringers~ Md
-60 NX-o 100 3. 0 0 / high-nnglc lnlntR or on \ \ \.
1 mtcttceoua gouge".
pat11ngfi on high-nnp;lc ~"\~\
V/ / ; R2. 5 ... fol!nll<m. l're*h, nnt wx ..:;,:.,\
~.., , )t
\
100 I tl//; '
NX-6 2.8 Fnu to.. .~':~'~
.R5,0 '\."\
l'lQ-7 100 2) 7 N20W, 44NW * ~~
~' Feldspor veining Sense of drag-fold-NQ-R 95 45 VI J N 2E, 44S~: J ~~'\\.'-apparent faulted Ing at 90. 6 ft Is up.
96 ~N~Q-~9-JI~Oo~--~~~o-i~==t/:tJJ~*~--f--------i-~li;~~~~~~~~:*~:~~~~~~*~;+:~,---------------------------~~~~~~-~~~-*n_*_*_8_2_.s_-_s_s*----------------~~
- BOTTOM OF JlORINC NOTF.S N -Standard penetrnUon ret~lflltAnce, blow&/tt Rae - IA'ngth t'<loovared/lonflh cored, ~ ll A (tnt) *ShtlnrF:trcn~h rnt'f\Stlrt'lri SEABROOK STATION RQD - Length of oound core 4 ln. and longer /length cored, % with Ton*nnC' PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE e
u S - Spltl opOOII oamplo i Grrundwater
- 2) Rate of advanoc not nva!!able for YANKEE ATOMIC ELECTRIC COMPANY
~ U - Undlllturbed aampleo t!l~!'!!~.!!!!!!*- ...
NQ-7 to 9 *
..:I S - Shelby tube N- Dentooo F- Fixed platoo P - Pilcher Used 300 lh hammer 0- Ooterberg G- GEl x - Orit"nted core Dale: ,Jnnuary 10, 1974 Projeet 7288 D
wx
- Drilling break Weathered, weathering k - Coefl!oient of permeability PAGE I of --1..._ I LOG OF BORING SBF 4
BOlliNG LOCATION Seq Suot!anrl Ronrl site p!nn !NCL!NATION ~ IH*:ARING ~ DArE START/FINISH lloo<>mhor 2C., 1073 I January R, 197~
CASING lD _ _,_a:.!!!.!.. in. _ _ COllE SIZE 1-7 IR ln. TOTAL IJEPT!l 11>7. 7 II rt DRILLF.Il RY Anwrlcnn Drilling & lloriM Co., T. Cnnnln;.
GROUND EL tMSL) --1.L..!L1!. DEP1'1!1'0 WATER/DATE *0 ft I ll<*e. 2H. 1 !171 I.(IGGF.D HY Hoi! :. Polk* Rouk- ,J. 1\, Hnn<l EL, SAMPLE RATE C~~f~lh orRQD STRIKE, DIP PRt:SSURE TEST SOIL AND ROCK DESCRIPTIONS F.., Foliation MSL D*ptTT)'pe N OF Computed J
- Joint {Type. texture,. mineralogy.
and or AllY, I!E!!! k C ~ ContJHll color, hnrdrWIIIIA, etc~)
It f< No. Roc. mln/f 'T Grnphlc P*l to"*1cm/soc 1! =c Hmldinl{
17 ,6 ~--~---r--~----r---~--~--_J~Il~!l---r--------r-~s~-~s~u*H~ck~cn*~l<l**~~------------------------------------------------------------~
3)
NOlle to 2l 3~0*r+---1~--f---~---i--------~---i--T~O~I~'---i~O~F~f<O~C~K---i~~------------------------------------------------------------~
- 4) Most pa 1'ttngs Granodiorite. T,vpical NCB\'-
Fresh \qth mmm* rm\\"tl('11.,.. " )<
NQ-1 88 1.f'i 7J a:re joints \\X effect~ on joint ~lll'fac ,
ba ryport. m('dium -gra.lnecl, medium gray, with gret"niRh..:
Jnint aurfnccs nrl' not '
NQ-2 100 1.5 grny huc 1 nnri pink fC>idspnr sUo kens idmL spt1U ing. Gent.~ r:1lly masfiiYC:
Locally shows folinl~rl zont'~
NQ-3 92 l.G Cut hy futw-d fctdspnr q_unrtl 1.7 50 iStrlk<'R 1 Rmtty jolnl-
!: NW - 'r ~-
~~;~~~~= .rn~:tt:1~~r~~;ck llnfL ftT11iOcff 11t !HP, fnHntion d<t-NQ-5
'i y'"" ,.._" ~i~:.~~*m*cl volops locniJy ~'nguc. I*' I rnt 88 1.9 70 m£1ch3nic::lt cffoots of fnult i Ru*ly loin! FrflRh, nrlllot ell .*Joint*,.'"'/,." FlntH' ?.one nppnrcntly nt nround l-AO NQ-6 nnd rmrting!"; ~how minor ') "" ; Grnln~d !i6-5Flt. -
2,0 77 l Minor rusty i surfnct" wx cfr<*ct!t. Not _,.-.:!.
- Py-rrhotite siickm'lsirlNl. ~.._,...
NQ-7 75 2. 0 75 "'.,-.,
l-70 NQ-B 100 2.5 52 , Minor n.U'Ity
" ~ *~ rntcr!al Fuscrl fault Diorite. Mcdium ... fint' 93 2.5 48 l*'rosh. Par1in~-tt: locally RhOW tninor WX orftmls 1
~~~I
,-' ... l grained. Mc(Hum greenish gmy. Locn1ly fnlint('ld.
- oUnthrn is somC"timC'R
,;.. I Minor MISty but not *llckcnR!d<*rl. '--~:
-40 1-RO NQ-!0 2.8 400 ~rn~-foldcd, Rook Ia -
28
-;-:::1 NQ-11 98 3,5 27
- Minor rusty - ~
mcchanlcnJly deformed, ap-prnncbtng fault--csuhonatc-vt*inlots.
90
,._ NQ-12 97 0 ////;
40° Flna-grn1na<l rock, wtth Frc-s:h. Not wxT hut I~
~v nlteT't'd hydro1hcnu.;l1y chlorite < ?) apccklin~. l.o-97 35 cnll.v foliated, out through-to lighl ;-:-rc:C'ni.Rh gt'tly not h.v fclrlRrnn*~lnlots .
..:olot*. Po rtlngH n t"'e" not NQ-14 100 1.7 35 1 Minor rusty Rl!okcn.lrlon.
j*.-~..
N(l-15 100 72
-60 l1 NQ-10 100 1.6 72 Fr<*Ah nnd hnrd. Brm"'
Wf'll~ l\PlnUvt*ly minor hyflrnthf>nn:tl flltf*rnlion. M<'tlium-I innr ruRtv tirnn()(UorH;:~.
NQ-17 98 1. 7 85 ** y 1M grafn~~d. Lncnllv RhrmA ten ..
dency In McrUum
'j::: ._.
y~Y r~~HaHnn, 12 NQ-lH 102 1.7 J1\lcnuh<ld ~
... ,. ... JI"¥1 gr<"cniAh grnv. -
~! ~":!
NtJ-I!i 101\ 50 .,~ .. -:::;
- Vnllnt-NI-fuAcd 1.7
-:!. ;:_-,Cntnclm'!:tle 78
~ nJuanhed JointM J;t rlntcd l<'t*(*sh fiflft hnrd. Lno:ti.Jl':-;~.;:'11 minor h\('nohlnJ-1. Pnn ... l "' , !-
tirnnorllorilP. Mct1lnm-
\ 1\nugh not ttllck-lngs ¥~hnw m inn-r '\ ~ "JJ- "' "
gralnc-d. mc*Hum }trccnlsh 1:
Nq-21 100 L9 ~rfC>cls, hut arc nnl )1. "?"'
f'naldt>d.
- "' ltckcn:t lrk*d. I 'l< ._ ~ grov. Fnirlv rnnn~lv;:*. llnrl.:
> ~. chlorite npcckling. rChlor-Nli-2~ l 00 2.0 ~Fine Uo* not nltorod nrprcclahlyl Minor wx !v ..,.' ~ llnclua:ion NQ-2!1 11~ 2.2 "~ (I I i ., ~ '
~~~r---t----t---1----f-----~L-/1- ~---f--------f-----------~~~~~~ll~nn~r~hl~~~"c~h~c~d------------------!*~*~~--~~:--------------------------~
N Standard penett"Qtion resistance 1 bJows /ft NOTES Reo Length recovered/length <HJred, 'J.. 11 Dt>pth~; nott:'d WC'rc rncnsurod Ifalong ihe SEABROOK STATION RQD
- Lenf(lh of Bound core 4 In~ Md longor/lcngth cored, '1 boring** 1 not vcrticnlly PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE
!i! S - Spill spoon ..mple ¥, Groundwal<>r YANKEE ATOMIC ELECTRIC COMPANY
[;j U - Undisturbed 8l\mplee 21 Wn::;h!"tl thrnu~h cln.v if* 34.0 1 - no R:tmpl(*s tnkc:n
~ S - Sbolby tube F'- Ftxerl pl*ton N Denloon P - Pltchar
- Rollt:'r htHcd to :Hi. ll' u~.~.~~~*---~
0
- O*tcrberg G- GEl :\~ Nn nlay~ prr*::r>nt: tlwr<*lnrt~ no wntt*r Ont<>: .Jnmm rv 11 1 I H71 Project 7286
~*nntr-ttlt; \\PTI~ d(*t~1*ndrwd.
D
- Drilling break I
k - Coolllcionl of wx "" Weathered. weathering permeability *1i Uo:llt*r hltt('d 1o G2.. 0 ft. PACt:
<P of LOG OF BORING HRF !i GEO'TEf"tiNlCAl.. .ENC1NEEM INC.
BORING LOCATION Sec Soo!lnnd 1\na<l *ito plnn PArE STAflT/FINISH DPcC'mhf'r 2H, l!l7:t I Jamma A, 1!17-i CASING ID _...:3'-.!!:lno.:..*- - - CORf: S!7.E 1-7/~ ln. TOTAL DF.PTII _,_1,_!17:_:._,_7_ _ n--'.!.ft !HlTJ.Lf'D RY Am<'ricnn Drlllin& k Hnrlns Co., 1'. Conning.
GROUND lo:L IMSL) 17. ll ft Df:P'rll TO WA'I'f:Ufl>ATE LO(KiED BY Soli - 1\., Polk* Hock~ .L IL Hnnd EL. SAMPLE WAH:R or llQD PR ESSU!l!: TEST STRIKE, DIP R~'{f. CONTENT F ~ Foliation w !;! SOIL liND ROCK Df.SCR!PT!ONS MSL Depth~Type Computed (Weathering, dcfecta, etc.) (Type, t~:xture, mineralogy, and N
or ADV. ~ : ~~~"ttnct ~~ color. hardnesA, ete.;
ft ft No. Reo. lmin/f 'J Graphic ~ 1n- 1:m/soc B = neddlng u lll i.:ONTII\'1H:ll f?llOM PllEI'!Ol'S PAm:
...... .,....,. ,.. , ... 1*:~>I -
14~
~
Hr. !'({*2 n7 2.5 70 ChlorUcox nrt* et!U dark gro('n.
an~ nni Hllel\(*nHidt*{l, "' " Y 100 f>{) '")1."')1."'
I Nt~*2f 2. 7
! Slight wx ., ) >
b'ln H I
- ,>-.,, I H~.:*t'ollH.'f: vn,trJcJy fnHf'!lcd. Ap~ _
')r Nti-2n D7 3.1 68
~~
pa r(mtly cntaclnstic. Ltghl L.,1i~ ~ gr(.'lcnfsh grny *
-100 NQ-27 98 3,*1 47 t-~:r 27' ftrC'sh nnd hn rd. P~n'l in~s l-17 NCI-28 102 :!,2 47 1-1 Slight \\'X ar<' not $!lck-r-nf;id(*tl.
....* J,..,.';
)'!'"'"'""" -
~
~*l'l4. 2 (l.wn cnntnet rHJs o-lL N(/-29 92 :!,!; 35 ~17 ,,~~n,i nli<*.rc*l.
- 10°
~ Not shckcn-
- *"'lX'cnlsh 1-ls NQ-30 93 3, l 57 1- gmy, fln~-grnln<'<doflntcd. -
¥~~~ lAL'li'UHc('l 1 ht"<'CCifitNI cnnt.aut. Din~
s j*L.. .,-.. bmw~ di!rk grav unnltt'J-ed.
NQ-3 97 3.1 62 40° -~ ..'
~
Nott*: At 171.2'
- 1-'!'(*Jo<h dinb~,:-:t* litllts Nolt*: At 1:11.7 1 , cont:v:l or dinhas<! is
~9 NQ-3 100 a. 2 !l.1 an' ngnins! fight Jt.tl*c>n flnt*-j..!;raitlt*d ,4 hrt'ccl:tt<>rl, nnd r<:'-C(>tn~ntcd bf":
cnhw.ln~lte C<~nll'ih*! slrini!l'r in -:..:.~*, enk*HP. Uiabmw iR n()f apprctd-
- 10c
-120 dinhnst:' dfJt'fl 1wt <f<'ml m*rosf{ i ' **
nhly n1tC'rNL Nfl-~;l 1on 2,fi !i;J into ont:v:\nRfh*. I -'"I -
l!Jl'.
UOTTOM nt* !lORING -
t-1- -
N -Standard penetration r<"lllstance, blows 'rt Rec - U!ngth recovered/length cored, 1r NOfES SEABROOK STATION RQD length or sound corto 4 in. and long(>rllengt.h cored. 'J PUBLIC SERVICE COMPANY 01' NEW liAMPSH!R:f:
!i! S -Spill spoon *ample ,& Groundwater YANKEE ATOMIC ELECTRIC COMPANY
"' U - Und lsturbed sample* -
C)
~ S - Shelby ruP,. N - Oenl*on F- Fixed piston P - Pitcher 0- Osterberg G GEt Date: ,Jnnunrv 11, Hl74 Project 1286 I
D Drilling break k - Coefficient of tvx. - Weathered, weathering penneabiiHy PAGE of LOG OF BORING
BORING LOCATION See Sootll!lld Rd. olte plan INCLINATION Vertical BEAIUNG - - - - DATE START/FINISH _ _,.J,.Rll'--'4'--'1"'9.~.,7:1,___/ Jl\l). 8 191i CASlNG ID _....i.i3.J!nll.....-- CORE SIZE l-5/8 ln BX TOTAL DEPTH -......i'~Bo.OIL-.-!1!!. DRILLED BY American Drilling & Boring\ Manco GROUND EL IMSL) 17. 8 ft DEPTH TO WATER/DATE o. 0 It I Jan. 30 !974 LOGGED BY Roll - K. L. Polk; Rook - J. R. Rand PRESSURE TEST STRJKE 1 DIP EL. SAMPLE llATI C~~U:h- or RQD SOIL AND !lOCK DESCRIPTIONS F
- Foliation l'l!l!
ca:< (Woalherlng, ddeclo, etc.)
8il MBL Dept.bhi'Tn>e N OF C<>mpuled J
- Joint (Type, l.eX!ure, mlnoralOCY, and or ADV. Jill!!!. -4 k C
- Contact color, haYdnese, etc. l II It No. Rea. 611>/f % Graphic ptl 10 em/lee B *Bedding
'oo - .. =
17,8 m-Br~wn or&ffi.\C.,~]t. SlA- Mottled fJrarc lUI<~ brown~~.:~ cab; ow P!8Btl."lty.
S!~fi;~r~W:a~Jfe :~:: *~fif!!~;b~,;~t sr~ot~~ P~~M;.~~;1~~ty;(' ff'blocky lrtruoture.
Olive-brown ollty clay. V. stiff; low to med. plasticity; w above PL; somewhat blocky.
Similar to Sample S4. s (tar)~ 1. o tat Similar to Sample S4, bu't also contains some gray streaks up to 3 mm thick.
Similar to sample 84, but medium ettff. *u(tor)
- 0. 46 tor. ~
( pB 3 Gray ollty clny. Soft; rnerllum pl.. tlctty; *lightly otloky. *u(!or)
- 0.261*1 0
1:"2o [ ~9
- Rlmllor to Sample SR, but inoro otloky.
- ttor) 0
- o. 15 l*f
[ tJto 5 Similar to SampleS~, but fl1<>re otloky. s (tor) = 0.14 !of 0
l-30 [
~11 fi Similar to Sample 88, but more sticky. a (tor) 0 eO. 20 tar -
[ t;>t2 5 S.lmllar to Sample S8. s (tor) = 0. 25-0.30 tor
-20 0 ho. ~13 4 TOP OF SAND Similar to Sa mole sa, f*w silty fine sand layera In l mm thick. R (tor)~ o. 30 tar *
~4 13/6' r~l~ .}~. TOP OF TILL 46,5 Gray-brown silty medium to coarse sand. Wlde)y graded; Hncs are nonplasUe; eub-f:-oo ~ 17 18 70 85/6" angular to subrounderl grains:; contains a lew gravel pieces up to 8 mm in size.
- TOP OF ROCK 531
-40 1-58 BX-1 P2 3.0 57 VI BOTTOM OF BORING Minor rusty Not w*. Altered by hydro-/*:;: *.._\r..'l Minor rusty thermal bleaching. 1':;-'\*.,)_,,
Catacl*sllc, foliated. Fuaed breccia, medtum -light greenrsh ornv Note: Cas,lng bent at: 14 ft while driving Note: Rock is medium-f!ne grainedt f- and hole aounrl not ACCept N- ~roundmaa~ contains sub-barrel for 5 ft only. Could not rounded £ragTnents and micro-risk a second run due to oavlng !aultcd pleoe. All fused.
potential nt baRe of casing. Joints show minor rusty aur!aoE wx effects. Not sltckenetded.
NOTES N
!lee -
- Slalld.ord penotraUDtl f"ll*lanoo, blowe/ft Leor;th recovored/lol>r;th col'<ld, % SEABROOK STATI_ON RQD- LeoBI.b of aOWid oore 4 ln. and lonpr/lonBI.b ..,..,d, % PUBLIC SERVICE COMPANY OF NEW HAMPS:IllliE
@S - Spill apom sample J Orotl!idwater YANKEE ATO!.!IC ELECTRIC COMPANY i'J U - Undlllblrbed 1amplea o-l S - Bbelby lube N - Donlam
'-* UliiBd onglneem.---. ...
~.-..-.-~~
F
- Fixed plololl P - Pltobor o- O.l.erberr a - GEl Date: March 9, 1974 I
D - DrUIIng b""ak k
- Cootrlclent of wo: - Woalbored, ""athert.q ptrmeahlllt:Y PAGE l of I LOG OF BORING
BORING I.OCATlON Sc~ Scotlanrl Rond sit{* plnn INCLINATION _ _ *1*-~"-- HEARING ~T TM rF: STAI1T/FIN1Sll _;:;.lo::,:n:.;.*_:":z.*....:1.;:.!1:.;_7*:._1_ _ I .Jan, IK 1n74 CASING !D _ _.:.:,~..!)In~*-- COBE SIZE 1 7/R in. TOTAl. UEPTH* _ __,2"':l.:.:.fi,_,.0,_--"-(t DRfLLED BY Atnt!rierm Drilling & Hodntp T. Cat1ning.
GROt'ND t:L *MSJ.l 17.r. f: n.:1 II .Jan. I H lf>7*1 !dfita:n BY Roll-~. Polk* Bod," ,J n Bant!
E!.. S.~MPI.E RATE STillKE. DIP SPIL AND 110CK DESCR!Pf!ONS or* P = Fnlintlnn
"'SL n.pthrype nnrl X
or A!J\'.
Cotnputc>d *'., ,JI>int
( n. (.'tmtnct f f'yre. texture, mineralo~,
l.'<~lrn*, hardnt*fl!i!, E"tc. i It ft 1\:n. lice. lln/1 Cir:1phic lO - 1 u':n/~t'<: ~ l'<*<lilin~
g
!7.5
.I)
Nont*
2\
f-1 0 r-20 0
30 f-40 -
-20 F-50 60 -
ffl
- '\.i.5 TOP 01' flOCK t Nl'/-1 92 1.5 42 Minor rusty Fnirl_v fn,flh :md *~ r CntnclnHtic. Folintcd, s:ms-Minor ntsty h:1 rd th r*oughnu1 hut ~- "' f'urllizcd. dt>formed diorite.
70 NQ-2 R3 1.3 47 l' cor<' lost ftlte'r{*ct h\-' bleaching. ::7';_:;~ f'in~ t<> medium ;;rnined, light-VII!
Pa~1.ings nrc not 'JOO ; : ; _ greenish to tannish gray.
Minor rusty !=!lickcnsidud. -:;:::
NQ-~ 100 1.3 13 Aphanitic-VI~
- ..80 - Driller brnkcn yellow-green
-40 NQ-4 77 1. 3 2.1 -;;:::;
nt close' intenraiN Not wx. Core broken "'7 .~
- Cat'flclastic. Fairly fine-NQ-5 100 l. 4 8 Yl//; throu)lhnnt inlll 1' to _--:::' _,:
.p p:ioCt>s by pcmr grained, light greenish gray.
Foliated, Apparent dnrk
'ill!
rlMUing. (chlorlto?l rnin~rals scattered
- -so NQ-6 100 1.4 0 _,_:--,.* loonlly, -
Discontinuous - , . f.."t NQ-7 93 2. 0 25
[U o; vertical Jolnt strikes NW Not ws~
t-!..,+: f!5* 2
~ C~l_:Hf' Ym.lf\g('r th:m nltcration in f'-lsNi nlt'ncht*cl hy ~; l v ~i.'k count!-\' rouk G.;Ycltc \'Uinlct.q, 9
intnu~ive contncf NE5:trik
- umRc* .t'arti ~ray me gr.
- Htlc f-100 NQ-8 100 2.1 55
- r;~~o:~cr;:~~~:J~~r- >()<~ Cntnclastic. Medium f'rnincd -
I';
jlrrty. g '<)C.-; ~ foHf\tod diorit~ to 103'. l'"inc-NQ-U 97 1.9 47
.::!:'b ;:-, gl'nin<>d, folintod with !irnntl VI/!: -
~::.....:::: 1 qunrtr. eyes below. Bccomt!A
-60 f:,t.H rQ-10 85 2.1 12 112 1 to 11 f 1 CIH"('
- -; very nne-grafnod.
NQ-11 RO 2.1 7 Vf//;
~20 NQ-12 100 2.2 s:; $)
N*llil*:, A:lNW NQ-13 llR 2,1 7:1 ~~in~: #~liJ.:.
tHI!*:, 1\RNW,
~:1 f'l(/-1-1 9:1 1.1i *1:1 ~~li<<*. ~lift!.: ,r.
rq-15 97 :!.n 6:1 lHot*ltt~-gnmndlurllP. 1\fNIJum
-AO ~rnlncd, light gn*cntsh gra,v.
f!-10 r(~~~~ A~ 2.a 3:1 l.m*olly rotlnlo<l.
GrnnrxHoritc~ Light lnnntsh p;rny {extcnsiV(' hlP'a.chin~J,
~(/-17 02 2. 0 2:.1 fQHntcd, mcctium grained.
HR N Standard penetration resistance. blowR/ft 'IOTES Reo Lenl{th recovered/length cored. r~ 1l An~tlc hnlc SEABROOK STATION RQD - Len~~th of sound core 4 ln. and longer /length cored, 'T PUBLIC SERVICE COMPANY OF NEW HAMJ'SII!RE.
Q S - Split spoon oample i, Grwndwar.er 2) Wnshctllhrough soil from 0-65.5' 1!l u - Undl*turbed samples - no sa.rnpl<' taken.
YANKEE ATOMIC ELECTRIC COMPANY C)
!j 8 Shelby tube N- Denleon 3) Rnllcr hlttod to nr,, 0
- 111~~~*;.__.-
F- FiXed platon P- Pitcher 0- Osl.t!rberg G- GEl *0 No t!low~ t*rt*Hmt; tht*n~forf', no wntcr Date: Project 7288 l
(!*'lil!t*fif~ \\Pn' !ICfPrtllint*d.
D - Drllling break k Coefficient nf
- Weathered, ~nthertng f1) 11d~ ~~ nnlv n purtlal li."t nf ,fip and w,; peMneah!llty stt*ik<' dnln PAGE of LOG OF BORING $H.f' 7
BORING LOCATION See Bootlancl RM<I*I!o plnn INCLINATION ____1![_____ llt:ARING SHEorlnlt' DATE START/FINISH _ _::J~an;!!*_:R::J,_1~9~7*::..1_ _ 1 ,Tan. !R, 1974 CASING fD _ _!.!.3.!!1n,._ _ CORE SIZE 1-7/A ln. TOTAl. llF.I'TH _..;.2:!!o~C.,~O:...._..-'f~l l>RJI,t.ED nY American Drilling & Boring; T. Conning, Lmaa:n flY Soil- K. 1.. l'nlk
- lt<1"k- J, ll. !lnhll Hllll. AND !lOCK Df:SCRli'TIONH
{'I)'tH;* Wxturo. mlneraloKY 1 color, hnrdneliut. ele. i s - Sl!okrn*ln<' CONT Nut:IJ I'IIOM l'lU:VIOUH PAG>'
15 NQ-1 92 2. 0 :15 Br~ccin-fuacd NQ-1. 100 2.4 4R
~r,o Driller ground
~Q-20 100 2.2 32 nhn\'C, Not slick-
-100 N(l-21 100 1. 9 45 Cataclnstic. Ftnt'-grainr.1 d, orrs~l locn.11y foliated nnrl brecci-E-m NQ-22 E7 1.9 28 vclnlcts Fused ated (fuaod). Med!um-*larl<-
grecnieh r:ray, F.pldot !zed.
NQ-23 100 2. 0 51 Slight wx N flf wx. }\rmw m iv-r Cntnoln,uc. Flnc*-grnined_
bRO pqQ-24 100 2.1 55 Not <.*xtt*nslv,,l:v \\X I'rft'{'h> Joc:tllv lk'eomin~ promttwntly f1)ltnlcd 1 hn*c<:tn!od. Not alteration only pnri pnntll<*l {(!
cut hv cros~-cuttlr'IJ! vein-jN(I-25 100 1.7 2R ntion, No! :did;- -~~ _ J*'mwrl lets~ H:1 rd 1 hr!'ccirt 1~
t'n!-'irh*d, CmnpHtt'nt ,_ *---
fm;ced (:tnnc*:tl<'rli, Xot riiot- _
8oo ftifr1.V hru*tl. Ut*llh; ~ ~ ::;,._ hrcocln
~<1-211 100 1.11 72 fnlrlv wt>ll. ~ ~~ througlmut Rtlu nr flli<lkt'nsldnd, Ml!rihun s:rrr<'ni:<h grnv.
-120 IN<I-27 100 1.7 25
!*s-~;
-.t*A*P.-
Not Minm*
IN<l-2R 100 J.A 40 1\lodlot*n(e \\X. !,...** .:-
blc*nohin~ snd:wt* '.\X pfl(*ct~ ..-'".. ":, C.nlncln!1tic. Flnc-gralnert_
amj: ~*~~ J
~00 NQ-20 ]00 1.0 H7 altcratlnn nn lnintn <:mrlpart- A,. ~olo"'* matrix, t!piclotC' bandinf!'.
E:rt!*nsfvc fust!d hrcccin Nf*lllW I 42NF. F
~~~:;,.Not ~Hckcn- ~{~~ fabric. Light yctlov.-~rcc~
100 RO t
'(1-30 1.7
~ngiY: rtNr: -] mvlomt('
mylonitl' fnplmniticl at 210.6-211.6t~ FusC'd _
~10 NQ-31 100 1.0 52 NOGf:, 17NW 8 Hn t*izontnl F' Smuoth. Mtl!k*lntc N t wx, minor !'l:triatcd .r:in;~x~,~~l(;:~~:~s Slickcnsh'led on not polish<>d. s t tl
~
~-
- .:o Pid<"d.
throughout. Not Rlickcn-Chnton-Ncn\ bury f;tult~ Contact
- NQ-32 100 2. 3 55 ~98~: ~~~~ ~ foHntion sltckt*nstdt*s, ~~:::; ~ fuseri. Mod£'rntc wx nt 21!J.2' Pyrite xta.ls slick<"'n.sidc.s n.nrl ,{.., ..:: Diorite. Slijtht alteration
~2 NQ-33 100 2.1 53 ~:;:;~~(;::~ sortcncrl rock at 1-v"ftv: !"cl}nlintlnn to nhout 21 R'.-
-340 ... 222.*1'. -~ ~-"' ,_,. l"Jcumm gra 1nm11 mm1ium Slnooth. Ohlorll ""- -. ,., .. $'(ray. Veined below 21A'.
- NQ-34 100 2.1 nn N!iHE, 52N\\' S
~3
- Nq-a:; 1(!0 2.5 54 am:~~~~:~ Diorite. Mctlium ~rnlnetlt medium dn rk to dark grRy .-
Nnl nltcrcd hy<trothermnlly.
lrr(tj.,ru1nrly calcitc-\*cined i{(l-36 100 2.~ 65 throughout. Fust!d,
~4 ~Q-37 100 2.3 50 -
~{~-3R 100 2.6 ~3 160 !:-:zs *~<Hn 100 2. f; 4fl I
~55 1-RHO 6*1 2.3 IH !Ill f- -
f- -
xorr.s N ~ St.nndnrd penetration n!Slstance, blows/ft Rec - Length recovered/length cored, 1 f x - Oriented cnrt' SEABROOK STATION RQD - Length or sound core 4 tn. and longer/}cnp;th cored, '.i PUBLIC SERVICE COMPANY OF NEW HAMPSHIR£
~ S - Split spoon l'la.mple ¥ Ground~Atfjt YANKf:E ATOMIC ELECTRIC COMPANY.
~ U - Undisturbed samples
!j 5 - Shelby tube F- Fixed piston N-. Dentaon P - !'IIeber 0- O*terberg G- GEl Projf>ot 7286 0 -Drilling break
- Weathered, weatherlnl(
k - Cot'*fficif'nt of f"'nnenhlllly of I LOG OF !lOR !NO SltF 7
J!OI!lNG LOCATION See soothmd Rd. sltc plan INCLINATrON Vertlonl BEARING DATE STA!IT/FINISH -...!J!!!o~n.:....=;25:!.t,-'l~9~74::,__/ Feb. 19, 1974 CASING 1D _ __;3'-.,!!ln~.- - CORE SIZE _ _,1_-7:..</.:.:B...:In:.:;*:..-- TOTAL DEP'I'Il -~1,_,7.._2,:.0:____;11~ DRILLED BY Amcrlc*n Drilling & Boring* T .* canntng GROUND EL !MSL) 17.6 ft DEPTH TO WATER/DATE Tidal rt I LOGG.:D BY Soil - K, I,. Polk: 1\ock -,f. R. Rnnd C~~u~ <>rRQD PRESSURE TEST STRIKE, DIP El...mSAMPLE RAT! F
- Foliation SOIL AND ROCK DESCRIPTIONS MSL N OP' c:omput..a J
- Joint IWeatherlnR, detccLI, etc.) (Typot texture. m lnenlogy, or ADV, C
- Contncl color, hardnetu.'l. etc.)
ft ft Reo. lmtn/1 Graphic ~ l0-4c':../*oc ll ~Bedding 17.6 I 0 s-Sl,sA 0,5 3) 2 S2 24 29.4 Similar to Sample SlA, but vary stiff, * (tor)> 1.0 tof )
sa 29 27.4 Similar to Samplo SIA, but very stiff. s~(tor) > 1. 0 taf S4 14 33,8 S5 7 40.4 Similar to Snmple &t. but fewer brown spots; softer. s (tor) .e; 0. 5!t tsf S6 4 41.9 Sim!lnr u r-Io S7 2/IB" 48.9 Gray a!lty clny, Soft; medium plostlclty; slightly sticky; contains one brown spot 10 "'"':
in size. s !tor}::::. 6,15 fsf u
[ 88 0 51.1 Similar to SampleS?, but contains oome slightly darker and l!ghter colored layering. -
0 suitor)~ o. 15 tal t:-zo [ S9 3 33.1 Similar I o Sample 87, but contains some darker and lighter colored layer. d!pplng-10°-
- (tor)
O.!R tar u
( 810 8 43,3 Similar to Sample S7, hut oontalna a allty fine snnd layer: sticky (very disturbed).
-ao CSll 2 44.3 Similar to Sample 57, but very soft an~ atloky (very disturbed). -
33.0*~--~--~---+--~--------+---~-T~O~P~---~O~F~S~A~N~DL---~+1--------------------------------------------~------------i
[ 8!2 5 Gray-brown sllghtly silty fine to medium sand. Uniform: nncs nre nonplaatic.
-20 Ho( Sl3 0 Slr_niJar to SAmple Sl2t but tlontnlnB a. clay layer and few gravel pieces up lo 5 mm in -
Rh~e.
[ 814 39 Similar to Samplo 512. hut cnntn1ne a clny laye1' and a few graV"el pieces up to 15 mm TO!' OF ROCK in ah:e.
~~0 I *-
1)
Cataclaatto. Fine-grained, t7b Gent'rally nnt wx Inter- ..J"-
NQ-1 52 1.5 0 7777 Slight wx nrr.aks on foll- :_"7:.;: bleached to light tan-green Slight wx n~tHy.
at ion with slight powder,l ..= =-:: gray.
-*o NQ-2 95 1.3 on partings t 7:,.:;.
25 wx effects on partings D
~0 Slight wx surfaces~ Mcdlurn 1~ ~~ 6
~
NQ-3 98 1.4 83 greenfnh-gray hydro- 4~/.
thermal alteration. .d<-;:£c.
I A-;._!;_*
,IJ;J. ,p.t:.
NQ-4 100 1.4 74 b-.~
3)
Slight wx *-;::"' Highly deformed
~0 NQ-5 93 1.5 82 l'I7RW, 57NE F Not wx. ~Hnor v.:x c(- ~;...A-~ welded breccia D
fects on some partings ;:..- Welded breccia NQ-6 100 1. 0 95 N88F., 50NW F as well as some tttrtated1.:::-C.:: throughout
-60 N81E, 36NW J but not polished surfaces~ Less hJeached NQ-7 100 1.0 N31lW, 40NE F ~:;.~ FUsed contact, deformed~ 60°
- "fiO N49W, 27NE J ~~ 80. 0* Latac astio. Meatum -ctarK NQ-8 100 1.0 63 N10E, 25SE S
,::::-!-~ * , _greenish gray. Deformed veins.
N79W, 54NE . J 83 6
... N36W, 29NE J Foliation Not wx. Drills welt 4~~-;
- NQ-9 100 1.1 82 Llght green-gray hydro- ::;:_.-;
thermal nltcratlon. ,:. -;:,,.-:Fused breccia
!;-;Jo _
N87W, 75NE . J ~ I~ ""' EpidOte NQ-iO 100 1.1 87 N50W, 27NE s !-
t! Soft-strte.tcd Soft. powdery zone at 96ft pri'Jbably wx asaooll-- ' -
~ Powdery surface atcrl with joint. Local *,-::;,., -:;
Cataclaatic. Finc-grained; medium green-Ish gray. Foliated,
-80 "'Q-11 100 1.2 31 N35W, 36NE N87E, 64NW II :; Chips striated ioint* or --:* -
partjngR usually parte ..:.,. .::.. : Diorite Loc*l fused breccia NQ-1 83 76 zones. _
~0 1.2 N* 7E, 35SE J 1 on rolfl\tlQn. ~~ ~ CataclasUc. Fine-NQ-1 100 1.2 78
~z'~
N54W: 47NE
\1~ JF Not wx. Joints ahnw ~- ._<<:::;.
m lnor *llppory chlorite- '.< 7f ~
grained, rnedtum green-l*h gray. zones of NQ-1 98 93 tnlo coot1ngs. Not pol- ~~ !_* welded breccia, hatr-
- 1. 2 NR2E, 37NW J l*hcd. SubJect to hydr**r~~j Welciod line epidote stringers.
l-11 ~lR~: R~~~ ~ thermal alteration, -* - breccia ""'
eptdotl7.atton. ~,.A~ Wclderl breccia
~loW: U"E ~
NQ-1 100 1. 0 80 A k. -A throughout
-100
- ~ ...
NQ-1 92 1.0 2a Chip* Not wx. Minor uurffl:CO ~Aj,)E_ CataclasUc. Fine-too
=
I-12C INQ-1 1.0 83 wx cffoctA on partings. ~..~A': grained, medium light
- Partingf'! nlso sh.ow ~~ greenish-gray. Local NQ-1 100 0.8 5A some otrlated, not pol- !_'Z_*~ l.lght tan welded breccias. Fair!~
f8hed su1'faces~ ~~ W<J!l foliated.
NQ-1 100 1.0 100
~3!
NQ-2 100 l.l 82
~~'I-
.~ ...
Not wx. Medium-gray -".A...-A..~
-120 NQ-21 100 1.1 70 green bleaching due to ;:::._ ~ Cataolaatto. Fine-hydrothermal alteTatlon. ; ;;..; Medium
~4£ 1 grained, ruaed breccia-
- Mino-r sul'face wx ef- ~ t<,~v. grained throughout. Medium
- NQ-22 100 1.0 62 fccts on pnrtlngs. Some - ~ -
&t*s Chlorite oartln*a striated. "'~ "'
- greenish-gray.
N - Standard penetration realliW>ce, blowo/ft NOTES Roo - Lonath reooverod/loftllb cored, % 11 RoHer bitted to 53 ft. SEABROOK STATION RQD - Lonath of oound core 4 Jn, 111d longer/length cored, 't PUBLIC SERVICE: COMPANY OF NEW HAMPSHmE fi! 8 - Split *P""" umplll J Groundwater
- 2) s (tor)
- Shen r atrcngth mflaaured
with To'r'Vane YANKEE ATOMIC ELECTRIC COMPANY
~ !l * !l!ldlolllrbed ..mpl01
- 3) Th!o !o only a partial Hot of dip *nd
~ S - Shelby lube N - DenloOG *trike data. l4'!!!!!!~Y!~*---..
F- Fllled plotoo P
- Pltcthor o- Ooterberg o- GEl Dote: Morch 9, 1974 Pr.,Jeot 728t I
D - Dr!lllnl break k
- Coe!flcten\ of wx - Weathered, woatller!Dt pennoab!Uty x - Oriented core PAGE ___1._or - L - LOG or !lORING BRf8
BORING LOCATION See Scotland Rd. site pi&!! INCLINATION Verlicnl BEARING - - - - DATE Sl'ART/F!NJBH ---'Ji!.:a~n.:..*.!.25~,'-1!.;9~7;:_4_ _ / Feb. 19, 1974 CASING m_ __,3!-IJ\!2!..,_ _ CORE SIZE _ _,_1::;*7~/_,_e-"ln~*-- TOTAL DEPTH _.._11,Z::,.*;!.O_ __,n::;. DRILLED BY American Drilling & Borlng;T. Canning GROUND EL (MSL) 17 ..6 ft DEPTH TO WATER/DATE Tlrinl rt I LOGO ED BY Soll - K. L. Polk; Rook- J, R, Rnnd S
STRIKE, DIP
!~ ~SAMPLE N ll;gf.~W:!.!A:WTl~!:!lhll.._*_r_li_Q_Dt-P-R_ESSfU!l'R';EmpTiiiESii<rTi SOU. AND !lOCK DF.SCR!PTIONS 8!;l F
- Foliation "l tWea!hertn~. d,_fect.e, etc. ) fTYpe, tenure. mineralogy, or A IE!!l k ~ =~"o~{...t ootor, hardn~ee, etc.)
ft
- Roo, ~ill/f % Graphic pol 10-4om/oec B
- lleddlng Ill 0 S
- Sl ok ..no do
~45ri---~~--+-~--~~+--4------r-------~~-~--------~--------~~-------------------4 Jf E :! .....:
~/
1.1 ~mt*~ ~~~~ Not pollohed. Intens\!ly defonned, re-57 N85W, 201m s welded. Not out by oroos-1.2 78 1 N86W, 60N E F outting vein lets, No observable calcite.
,) N82E, 28NW J Not wx. hydrotheT!Tl-
- 140 NQ-25 100 1.2 N59W, 40SW J nlly altered to 163. Gt. ...... ."*C . r to ~~t:3 1~;!~"0li,tn~;fJTn~cd Frosb, esE~entlally un- ..;. ".- 160 2,
~ ~it iii ; Ch!pg epidote. Medium greenish 16<1 altered below parting* -:::-;:-: 160 4 M ionlte gray-tan at 159-160, G ft -
NQ-26 98 1.2 47 Chips generally parallel r 11 tl
- A f
!2:.. --!! y t ,. .. ,._. Ft.ult zono-tran*ltlooal-not slick.
1 ~-;.,~
NQ-27 98 1,5 57
~m~:.~~:& g Not slickensided o a on. ew s r-ated surfaces, not v-x ....x 1 Diorite. Slight altet"ation and foliated to about t 68ft N27E, 70}iW F ~ Smooth jolnt polis bed. -;,. ~ Medium-fine grained.
170 ~~or ,..,...; medium gray. -
N0-28 100 1.2 N89E 4GNW F 172 BOTTOM OF BORINO 1- -
N - Standard peneU'atloo resistance, blowo/ft NOTES Roc - Length recovered/length cored, % SEABROOK STATION RQD
- Length of OOWid core 4 ln. and longer/length coNd, \1', PUBLIC SERVICE COMPANY OF NEW HAMPIIHIIIE
~ S - Spilt apoon . .mple ¥- GrOWidwoter YANKEE ATOMIC ELECTRIC COMPANY
"' U - Und!II!Urbed eampleo
§ S - Shelby lube N- Denltlon tl~~~*~-
F- Fixed plaloD P. Pll.cber o- o.t.orberr a- GEl Dat.o: March 9, 1974 Projoet 7288 D - Drllllni bl"(!llk k - Coorttotent of wx - Weathered, weatherln& permeability PAGE o! 2 I LOO OF BORING
BORING LOCATION see Scotland Rd. site plan INCLINATION ~ BEARING - - - - DATE START/FINISH Dec, 20, 1973 I Jan. 3 1974 CASING ID -~3c.!l[!n.,___ _ CORE SIZE 1*7/A ln. TOTAL DEPTH _;;1c!.l:.eA*c::3'---"'f"'-t DRILLED BY American Drilling & Boring; T. Canning, T. Paqu<;!!*
GROUND EL !MSL) 17,8 rt DEPTH TO WATER/DATE o. 2 ft I Doc. 20 J 973 I,OGGED BY Sol!. K. L. ro!k* Rook J, R, Rand EL. SAMPLE RATE c'ZM~~ or RQD PRESSUNE TEST STRIKE, DIP F v Foliation SOIL AND ROCK DESCRIPTIONS MSL Depthl'l'ype N OF Computed J =Joint IW.,athoring, defecte, etc.) (Type, texture, mineralogy, and or ADV. l!P!'l k C;: Contact color. hardnees. etc. I ft ft No. Reo. min/! % Graphic p*l 10" 4 cm/*ec B ~Bedding
!1, 8 110 Sl,Slfl -~ own ~1!lYCY top!lol : some' stflfl~~ *roohq organTo ~lOr, SlA-Mottled gray brown 82 27.4 y-brown silty olny. [,o\\ plns!lctty. ~(lor)'- 1.0 IRLfS2*Simllar tn Sample S'f.A, 83 28.2 ooky ctu:rc, s~oii > l. 0 tsf. ~3 ... b:lve-brown ail Low to medium 84 85 33.0 37.9 fJ ve ~~;1iu (t~~) g_k\': 3~d~Ss~~t!<f1~~ rtroctu li' :u\f:o stsJis~4-sr. o. f. SS*Ollvc*hrov.n to olive-r:r Medium ~lastlol!y; s1 40,3 y: oontelno a few *lit tayc.ra< 0,5 mm thick. s (!or)~ 0.36-0.42 tsf,
- 40.0 S7-Simllar to Sample S6, hut *lightly !It icky, *ultnr)
- H.32 !Nf, -
( SH 45, A Gray silty clny. Soft; medium lo high rtaattelty; sticky, "u(tor)- O, )5 t*f l:-2o [ S9 Slmllar to Samp1n fif1 1 iJUt hnR R hlooky !ftrunturc; app<."IU"S disturbed. su(tor; ""'0.2:1tllf-
[ 810 F\lm llnr to futmpfc SR 1 hut hcu; n hlooky Afruoture~ nppenrs very dlsturb(lcl, surtor)-::::O.lOts:i:
f-30 [ Sll Similar to Sample 1!8, hut medium stiff: blocky structure: appears very disturbed. -
su(tor) 0. 43 lsf
, ( S12 9 29.6 TOP OF SAND Similar to Sample SS, hut nns a blocky structure; contains layers of silty fine sand up
- 20 37.0 1---t--1--i---+----i---t......!='---f-.:=!.!~=~-+-Hto 20 mm thlok.
[:-.to [ sl3 11 Gray fine sand. Uniform; clean; very fast reaction to ahaking test .. -
[ S14 stmlln.r to Sample Sl:J, hut also contains a layer or coarse sand.
- ..so [ 515 24 Ltght grny fine to coarse sn.nd. Widely graded; very slightly silty; subangular _grains;-
contains n few grnvol pleocs up f(') 11) :mm in sl7.e.
5~~---+---+---+---4------~~--~~Tn~r>>
_ 57.0 TOP ROCK ,;C>~------------------------~
40 Not wx intornally, but ts ;~: ~~ \Vclde-1 Cataclaatic.
NQ-1 90 G~nerally bleached by hydrolhermnl.;;.; .d.' breccia fine-grained. madiutn _
alteration. Minor wx ef- ~~';' throughrut greenish gray (cpldotized NQ-2 100 1.0 ~ Chips £ecta on pnrtings. 13nrt."' ~.t;.*f. l'redom LnanUy welded NQ-3 100 I. 2 26 I Chlps
- 72. 5' on foliation. No poltahcd~ ~
slickenairtfls. Soml" pnrt-.,;*-~ "".0 lngs 8lriated. ModerAte (. *' ..& "'i w~ 72~5' to 74.5'. .f~~
breccia throughout quartz voinlete x-out fellation.
r:;.S.t:
NQ*4 100 1.2 Cround obipa f
- 14. 5'
-80 NQ-5 97 l. 2 43 Chlorite OJ~..4, RO N81 r:, 68NW Chips
~:!.~ Tnn Light yellow-green al* _
Not wx fntornnl. Joml:;:; 1":..,"", r...,. mylonite terntion SO' to Rl, 7*.
NQ-6 100 1.5 28 A.nd partings arc not ==:::;==:
Chips- polished.. Some striated 'C'_! J1._
F sl!gbt wx aurfnces. C' J- ':.
NQ-7 100 1,9 53 ~jgf: ~¥~~y! Diorite. Medium-90 :;/;. ;;: grained, medium gray. _
h<"'., .... .
"".......)(..
NQ-8 96 2.0 65 Chlorite* Unaltered reel<
- feldspar:
- triated vetnlcts. foliated to
- 80 NQ-9 98 2. 0 9R Fresh an<l hard. Drills , '!< "
r.;'~-"~ about 89' depth.
56NE F well. Joint* nnrl pnrtings k )",..
-10 NQ-10 100 2. 0 N~4W, n not slickensided. Not Pi<>r!te
- amphibolite.
Driller ~ .,. '>'
Medium-gr-ained, dark 11 64 1.9 affected hy hydrothermal ,. ,. I' mlslatoh gray. irregular ields-nlterotion or mechanical f' 'p( )I pathic velnlcts.
- NQ*12 100 l. 8 48 deformation. 1' .>< '!
)<I<)(
Slight wx lH NQ-13 100 2. 0 83 Fresh and hUrd. N~t v ~*,q.
>t i')I j Diorite
- amphibolite. -
~
<lofom.od or alto red by , ,. ,.,. Pink Medium-grained, do:rk NQ*l4
- fot*lting effect*.
100 2 0 62 li'J:*,;.\ quartzite(?\ gray, not foliated.
-1oo ~a~--i---1---t---t---~~T---+-------t---------~~------------------------v~~~~~----------------------~
- BOTTOM OF BORING N - StAndard penetuUon reoio!Anoe, blowo/ft NOTES Roo - Length reooveNd/longth coNd, % I) * (tor) = Shear strength measured SEABROO K STATION RQD
- X...ngth of *ound core~ in, and longer/length cored, % u wlth Torvane. PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE
~ S
- Split opoon eample ; Groundwater
- 1-103.4, lA 30,6
_ U - Undlttturbed sample* Y AN"KEE ATOMIC ELECTRIC COMPANY
""~ S
- Shelby tube F
- FI.xed plototl N- D<>nlooo I/P..ffllf'llt8d 81IIJII10018 *---~
~ .-........ <o~ll,....._c--
P Pitcher o- Osterberg G- GEl Date: May ~ 1971 Project 72 88 I
D
- Drtlllng break k - Coefflc lent of wx .. Weathered,. weathering permeability " - Oriented core PAGE of LOG OF BORnlG SRF 9
ATTACHMENT No. 3 PETROLOGY AND PRELIMINARY INTERPRETATION OF EIGHT SAMPLES OF DRILL CORE
- FROM THE SCOTLANT ROAD FAULT NEWBURY, MASSACHUSETTS GENE S.IMMONS DOROTHY RICHTER MASSACHUSETTS INSTITUTE OF TECHNOLOGY CAMBRIDGE, MASSACHUSETTS 02134 for WESTON GEOPHYSICAL RESEARCH, INC.
WESTBORO, MASSACHUSETTS 01581
PETROGRAPHY AND PRELIMINARY INTERPRETATION OF EIGHT SAMPLES OF DRILL CORE FROM THE SCOTLAND ROAD FAULT, NEWBURYPORT, MASSACHUSETTS Weston Geophysical Research,* Inc.
Post Off~ce Box 306 Weston, Massachusetts 02193 Gene Simmons Dorothy-Richter 15 June 1974
SUMMARY
The petrography of eight samples of drill core from the vicinity of the Scotland Road fault, Newburyport, Massachusetts is described in this report. The samples (with the important ex-ception of sample SRF-SB) all show evidence of dynamic deformation; That is, dataclasis, brecciation, and intense crushing--all probably due to motion along the fault. The deformation clearly took place after the regional metamorphism of the rocks {which was probably associated with the Devonian Acadian orogeny).
The microcracks produced in the deformational events appear in thin section to have either annealed, or have been filled by secondary minerals. There is no firm petrographic evidence of recent deformation of these samples.
Sample SRF-SB may be a very important clue to the history of movement on the Scotland Road Fault. It is an altered olivine basalt that seems to be completely free of deformation. If the thin section is representative of a significant volume of this rock, then it may show that no deformation has occurred on the Scotland Road Fault since this rock last cooled below about 500°C.
An even stronger statement can be made with respect to movement on the fault after the alteration of the rock was completed:
Because the strength of diabase decreases with alteration and because of the absence of deformational features in Sample SRF-SB, we are quite sure that no movement occurred on the fault after the alteration was completed.
Table 1 is a summary of the rock types in the Scotland Road fault suite. Detailed petrographic descriptions and photomicrographs of textural features are given on the following pages.
Table 1. Summary of Samples Sample # Rock Type SRF-lA Amphibolite breccia SRF-2A Mylonized quartz-musco-vite schist SRF-2B Brecciated quartz-mus-covite schist SRF-3A 67' Muscovite mylonite SRF-4A 43' Chlorite augen gneiss SRF-5A 42' Sheared granodiorite SRF-SB 175' Altered olivine basalt SRF-7A 116' Ultramylonite SRF-8A 155' Brecciated qua:rtz~muscovite schist SRF-8B 146.5' Brecciated quartz-muscovite schist SP.F-9A 80' Brecciated quartz-muscovite schist
PETROGRAPHY OF SAMPLE SRF-lA Name: Amphibolite breccia Macroscopic Description This sample is a coarse-grained dark green breccia.
Large {to l.Scm) angular fragments of dark green amphi-bole. appear set in a finer matrix of crushed amphibole and finer-grained white minerals. Zones of continuous mylonized and sheared materials cut across the sample.
Microscopic Description Texture The texture of the thin section is very complex.
Large single crystals can be seen to be split, sheared, rotated, and crushed. The original foliation of the schist is totally disrupted and the crystals are now randomly oriented. Multiple sets of fine parallel cracks and/or inclusion trains can be traced from an amphibole cry.stal into an adjacent feldspar grain. Coherent fragments of crystals can be "fitted" back together by eye, but they are separated by fibrous chlorite. Large cystals have cataclastic material along grain edges. Calcite viens which crosscut the breccia are themselves deformed, and crosscut by thin veins of undeformed plagioclase.
Mineralogy Hornblende is the dominant constituent of the rock. It is optically negative with a large axial angle, and pleochroic from pale green to dark greenish brown.
Crystal fragments range in size from 0.01~ 1.5cm.
The crystals contain abundant inclusion trains and cataclastic material occurs within crystals and bevels grain boundaries. The hornblende appears to be unaltered except for a few overgrowths of blue-green amphibole.
Plagioclase is the second most abundant-mineral in the rock. It occurs as untwinned crystals which were probably a part of the original amphibolite schist.
Plagioclase formslarge (0.5 - l.Omm) crystals which are completely covered with linear sets of dusty in-clusions. Most crystals appear strained and broken; healed fractures are marked by strings of quartz, calcite, and fresh plagioclase.
Chlorite forms pale green, fibrous, slightly pleochroic aggregates. All crystals display a consistent anoma-lous ** tiger eye 11 brown interference color. Some of the chlorite seems to be post-brecciation recrystallized mylonitic material which appears to be stretched be~
tween cystals. A lesser amount of chlorite appears to be retrograded biotite which is recognized by small amounts of relict biotite and remnant pleochroic haloes.
Calcite appears in veins and fills interstices in the matrix of the rock. Most of the calcite in the veins
is highly distorted and elongated; but there are also minor amounts of undistorted calcite in thin younger veins.
Sphene occurs in accessory amounts as small nodular crys-tals associated with fuzzy aggregates of leucoxene.
Opaque minerals form stringy aggregates in the mica flakes and more rarely occur as roundish single crystals in the matrix of the rock.
Apatite and Cordierite occur as small euhedral crystals in the matrix of the sample.
Estimated modal composition amphibole 45%
plagioclase 30%
calcite 15%
opaque 5%
accessories 5%
PETROGRAPHY OF SAMPLE SRF'- 2A Name: Mylonized quartz muscovite schist Macroscopic Description Sample SRF-2A is a light greenish-grey rock. It appears in hand specimen to be a brecciated cataclasite; in other words, it has a very complex texture which may be the re-sult of multiple deformations. The sample can be separated into different domains of fragments of coarser and finer grained material. The fragments are separated by fine-grained, lighter colored material.
Microscopic Description Texture The domains mentioned above appear in thin section as very fine mosaics of granular quartz grains and scaly muscovite. The average grain size is about O.Omm.
The coherent fragments are separated by shear zones of chlorite, calcite, sphene and ultrafine material which is unresolvable with high magnification.
Mineralogy Quartz is abundant in the rock fragments and occurs as small (0.2mm) roundish grains. Many grains appear to be crushed and granulated. Most grains have undulose extinction. The quartz crystals are almost always separated from each other by a film of minute mica flakes, except in the coarser grained fragments where they are in direct contact along sutured grain boundaries.
Muscovite occurs as small scaly clusters of crystals.
Muscovite is a major constituent of the rock and has three modes of occurrence -- 1) as minute aggregates completely replacing what was probably feldspar, 2) as thin films around individual quartz crystals, and
- 3) as part of the shear zones between the rock frag-ments.
Calcite forms small aggregates in the shear zones and small veins which cut the rock.
Chlorite occurs in the shear zones between the fragments as irregular stringers.
Estimated modal composition quartz 40%
muscovite 35%
calcite 15%
chlorite 5%
unresolvable material 5%
-?-
PETROGRAPHY OF SAMPLE SRF-2B Name: Brecciated quartz-muscovite schist Macroscopic Description This sample is a medium greyish green brecciated rock which is very similar to sample SRF-2A in hand specimen.
It is slightly coarser grained than the latter sample but is has a similar texture of sheared and brecciated metamorphic rock fragments up to 2cm in size.
Microscopic Description Texture The thin section shows a complex texture of brecciated quartz-muscovite rock. The fragments are of various sizes but have an internal uniform grain size of O.lmm or less. The f~agments are separated by zones of un-resolvably fine minerals mixed with calcite.
Mineralogy Quartz is one of the most abundant minerals 'in this rock.
It occurs as irregular but generally ovoid grains which appear to be highly strained and are O.lmm in size. Most of the quartz grains are not in contact with other quartz grains, and contain relatively few inclusions and bubble trains.
Muscovite forms small scaly masses which thinly separate quartz grains. The muscovite contains many small in-clusions of opaques. Muscovite is a common mineral in the shear zones where it has a weblike pattern.
Chlorite is not very abundant in the main body of the rock but it is quite common in the sheared zones be-tween the rock fragments. It is generally very pale green, only slightly pleochroic, and very weakly bi-refringent.
Biotite occurs as a few relict grains associated with some of the chlorite.
Calcite, clouded with fluid inclusions, fills the shear zones and younger veins. It is also present in the matrix of the fragments as small subhedral crystals.
Opaque grains are widely dispersed throughout the thin sections as minute single crystals and aggregates.
Garnet crystals are present in the sample but are very rare. Crystals <O.lmm in size appear brownish at the core.because of tiny opaque inclusions.
Estimated Modal Composition quartz 35%
muscovite 40%
calcite 15%
chlorite 5%
opaques &
accessories 5%
PETROGRAPHY OF SAMPLE SRF-3A 67' Name: Muscovite Mylonite Macroscopic Description This sample is a massive rock, mottled light and dark grey, and almost gneissic in texture. Most grains are too fine-gra~ned to be recognized although enough large~
quartz grains are visible to give the sample its banded appearance.
Microscopic Description Texture The sample is very fine-grained ( ....... 0. Olmm) and vaguely schistose in thin section. Very faint outlines of lenticular shapes seem to mark former brecciated fragments. These fragments are obscured by a fine network of stringy mica which have a preferred orientation in another direction.
The complex texture of this sample suggests multiple periods of deformation.
Mineralogy Muscovite is abundant in this sample as ultrafine crystals which are often optically aligned to give a weblike appearance of the mineral. Muscovite is very finely mixed with quartz in the matrix of the rock. It is the major mineral in the sample, although one cannot see it in hand specimen.
Quartz occurs as isolated fragmental crystals in the sample. It generally has indistinct grain boundaries.
Quartz also appears to be mixed with the muscovite at a very fine scale.
Calcite occurs commonly as O.Smm roundish crystals in the matrix and as thin aggregates following the schis-tosity.
Opaque grains occur in small knots with streamlined out-lines, and small crystals following schistosity.
Estimated Modal Composition muscovite 70%
quartz 15%
calcite 10%
opaques 5%
Note: Another thin section from this core exhibits similar textures but contains small domains which are calcite rich.
PETROGRAPHY OF SAMPLE SRF-4A 43' Name: Chlorite augen gneiss Macroscopic Description This sample is a fine-grained augen gneiss. It has a dark green matrix of indistinguishable minerals and O.Smm "eyes" of white crystals. The' sample shows strong directional foliation which is crosscut by younger veins of light colored minerals.
Microscopic Description Texture In thin section, the sample shows a complex, almost chaotic texture. It is basically a mosaic of fragmental quartz and feldspar crystals and aggregates with lenticular shapes sandwiched by shear zones of chlorite, calcite, and opaques. Thin veins of calcite cut the foliation.
Mineralogy Chlorite is the most abundant mineral in the rock.
It is pale green, pleochroic, and exhibits anomalous brown interference colors. Very fine, scaly aggregates of chlorite are commonly finely mixed with quartz and opaque grains. Larger crystals of chlorite show small amounts of relict biotite.
Plagioclase occurs as intensely sericitized, poorly twinned, fragmented crystals in the augen.
Quartz has three modes of occurrence in this sampLe: 1) large broken crystals in the augen, 2) very finely
mixed in the matrix, and 3) fresh crystals in thin veinlets.
Calcite is a very common mineral in the matrix, shear zones, and in veins. It commonly has deformed twin planes.
Orthoclase occurs in accessory amounts as anomalously fresh appearing fragmental crystals in the augen.
Opaque grains are widely dispersed throughout the thin section as minute crystals.
Estimated Modal Composition chlorite 35%
plagioclase 20%
quartz 15%
calcite 20%
orthoclase 5%
opaque 5%
Note -- the bulk mineral composition of this sample suggests that its protolith was a mafic igneous rock.
PETROGRAPHY OF SAMPLE SRF-SA 42' Name: Sheared granodiorite Macroscopic Description This sample appears in hand specimen to be a massive, coarse-grained igneous rock with no evidence of defor-mation. The average grain size is approximately lmm.
Visible in hand specimen are pink feldspar, white quartz, and an unknown green mineral.
Microscopic Description Texture The thin section has the hypidiomorphic granular texture typical of plutonic rocks. Equidimensional crystals showing varying degrees of alteration are crosscut by thin veinlets. The major deformational features in the thin section are: healed cracks, undulose extinction of the minerals, and a narrow shear zone.
Mineralogy "Plagioclase", once a major component of this sample, has been completely kaolinized with only a few rare traces of the original twinning or textures left. The kao-inization reaction produces excess Sio which can be 2
seen in the thin section as a thin rim around each kao-linized grain. These peculiar rims are optically uni-form around each crystal. The rims only occur along feldspar-feldspar contacts but do not occur along feld-spar-quartz contacts.
Quartz occurs as l mm blocky crystals with undulose extinction and numerous inclusion trains. Quartz-feldspar boundaries are generally smooth whereas quartz-quartz boundaries are sutured, a sign of par-tial recrystallization. Quartz also occurs in the rims around kaolinized feldspar grains as mentioned above.
Microcline occurs as slightly altered crystals with a microperthitic texture.
Chlorite forms pseudomorphs after biotite and amphibole.
It is medium green, weakly pleochroic, and contains abundant needles of opaques.
Calcite occurs as small clusters of crystals finely mixed with kaolinite alteration products, as thin veinlets, and as aggregates in the matrix. Calcite also fills the one shear. zone in the thin section.
Accessory minerals in this rock are opaques, apatite, and sphene.
Estimated Modal Composition "plagioclase" 40%
microcline 20%
quartz 25%
chlorite 12%
opaque &
accessories 3%
-is-PETROGR~PHY OF SAMPLE SRF-5B 175' Name: Altered olivine basalt Macroscopic Description This is a massive, dark greenish grey aphanitic rock.
Small dark phenocrysts (0.5 - l.Omrn) and O.Smm white amygdules a~e visible in the black groundmass. There are no signs of deformation such as shear zones or even veins.
Microscopic Description Texture The sample has a very fine-grained (<O.lmm) intersertal texture. The matrix texture is somewhat obscured by partial alteration of the minerals. The vesicles are rimmed with fibrous minerals. The phenocrysts are com-pletely replaced by alteration minerals~
Mineralogy Plagioclase occurs as small (O.lmm or less} laths in the matrix of the rock. It does not form any phenocrysts.
The plagioclase is generally poorly twinned and par-tially altered to a sericitic product.
Pyroxene crystals occur as small roundish grains with small scale intergrowths with opaque rods. It is pinkish brown in color and is probably augite.
Serpentine completely replaces roundish l.Omm phenocrysts of olivine. Serpentine also occurs as fibers in the matrix of the rock, and as the lining of the amygdules.
Calcite forms twinned single crystals in the amygdules and is otherwise rare in the matrix.
Estimated Modal Composition plagioclase 35%
pyroxene 35%
serpentine 10%
calcite 10%
sericitic alteration 10%
Note -- This sample is probably from a dike which post-dates movement along the Scotland Road fault since it is completely undeformed.
PETROGRAPHY OF SAMPLE SRF-7A 116' Name: Ultramylonite Macroscopic Description This is a compact, extremely fine-grained, mustard colored rock. A few small whitish augen (0.5 - l.Omm) are visi-ble in the hand specimen. The matrix is buff colored, highly sheared looking material.
Microscopic Description Texture This is an ultrafine-grained crush breccia. The original texture of the rock is totally obliterated. The apparent mineral layering is due to 'smearing' of the grain in local shear zones.
Mineralogy The rock is so fine-grained that individual crystals are difficult to discriminate, except in the few augen of quartz, calcite, and opaque minerals. The matrix is ex-tremely finely-ground quartz, mica, calcite, sphene, apa-tite, and opaque minerals. Calcite occurs in small nod-ules which show some signs of recrystallization.
Note -- the fine-grained nature of this rock precludes any further discussion of its mineralogy or texture.
PETROGRAPHY OF SAMPLE SRF-BA 155' Names Brecciated quartz-muscovite schist Macroscopic Description This sample is a dark ereenish f!,rey rock. On a fresh surface it appears to be a fine ~rained quartzite cut by narrow black shear zones and mottled tan zones. The wet sawed surface shows the texture of a breccia with distinct fragments ran~in~ in size from lmm to lcm. The fragments are separated by the tan material: both are cut by the black shear zone.
Microscopic Description Texture The texture in thin section is similar to other samples in the suite. Lenticular fragments of various sizes of quartz muscovite rock are separated by ultrafine-grained shear zones. Average grain size is O.lmm. The relative proportions of quartz and muscovite varies from fragment to fraginent.
Mineralogy Quartz occurs as roundish grains whrch are almost always isolated from each other by varying amounts of musco-vite. Some of the crystals appear to be broken.
Muscovite forms scaly masses which are vaguely schistose.
Muscovite is a major component of the rock, filling interstices, between quartz grains, shear zones. It forms the bulk of several lithic fragments.
Chlorite is a major constituent of the sheared zones between lithic fra~ments although it is not abundant in the fragments themselves. It is pale green, slightly pleochoic, and exhibits anomalous blue interference colors.
Opaque grains. finely mixed with leucoxerie, form intricate inte~rowths pseudomorpho us after tabular biotite plates and occur as euhedral crystals in the lithic fragments.
Calcite is common in the shear zones as elongate crystals.
It also occurs as minute single crystals in the lithic fragments, and in a few thin, undeformed veins.
Sphene forms fine granular aggregates in the matrix of the fragments and occurs as strin~ers in the shear zones.
Estimated modal composition Quartz 45%
Muscovite JO%
Chlorite 10%
Opaque 5%
Calcite 5%
Sphene 5%
PETROGRAPHY OF SAMPLE SRF-8B 146.5' Names Brecciated quartz-muscovite schist Macroscopic Description This sample is strikinely similar to SRF-8A in hand specimen. It is dark greenish-grey in color. On a fresh broken surface, it appears fine grained and structureless.
On the sawed surface, one can see lenticular fragments of various sizes, thinly outlined by lighter colored material.
The core is broken along a major fracture surface.
Microscopic Description Texture The texture of the sample is variable and complex.
The rock fragments consist of roundish quartz grains and scaly mica; the grain size and composition of the fragments vary. The lithic fragments are separated by mylonite which consists of ground quartz, mica, chlorite, and calcite.
Mineralogy Quartz is the most abundant and most coarsely grained mineral in the rock. It occurs as roundish grains which vary in size (0.1-0.Jmm) and abundance (60%-40%) in the different lithic fragments. The crystals commonly con-tain inclusions. Quartz crystals are rare in contact with each other. A minor amount of quartz occurs in thin veins which cut the rock and probably post-date the brecciation.
Muscovite occurs as scaly aggregates whose crystals are
much less than O.lmm in size. The ap-p.:reFTates form most of the matrix of the lithic fragments. Submicro-scopic muscovite appears to occur in the mylonized zones.
Chlorite forms pale green O.lmm crystals in the sMar zones.
Chlorite less commonly occurs in the matrix of the lithic fragments.
Opaque ~rains occur in the shear zones, in the matrix and in a few rare veins.
Carbonate forms irregular clusters of crystals in the shear zones but does not occur in the lithic fragments.
Sphene occurs in minor amounts as grainy aggregates in the matrix of fragments and in the mylonized zones.
Estimated modal composition Quartz 40%
Muscovite 40%
Chlorite 10%
Calcite 5%
Opaques 5%
PETROGRAPHY OF SAMPLE SRF-9A 8o' Name: Brecciated quartz-muscovite schist Macroscopic Description
~he texture of this sample is similar to that of samples 8A and 8B, althou~h the rock is light tannish-grey in color.
Lenticular and irree:ularly shaped fragments o.l-lcm in size are recognizable in a hLghly sheared matrix.. Indi-vidual minerals are too fine-grained to recognize in hand specimen. Thin veins of light-colored minerals and, more rarely. opaques are present.
Microscopic Description Texture The thin section exhibits the chaotic texture of the rock. Lenticular quartz-muscovite lithic fraronents are elongate parallel to foliation. Mylonized zones appear to be structureless. Irregular semi-parallel veinlets cut the foliation.
Mineralogy Quartz occurs as roundish grains in the lithic fragments.
The grains appear to be highly strained and in places broken. They commonly contain linear arrays of in-clusions. Very finely ground quartz is apparently a constituent in the mylonite zones. Several thin veins of quartz cut the rock. The margins of the veins are commonly sutured and show signs of recrystalliza-tion; in some places the vein quartz is optically continuous with qu~rtz ~rajns which it cuts.
Muscovite forms scaly masses between quartz grains in the lithic fra~ments. The individual crystals are minute but seem to show a general preferred orientation parallel to the foliation. Muscovite appears to be relatively more abundant in the finer-grained lithic fragments than in the coarser-grained fragments.
Calcite is prominant in the mylonized zones and in a few veins. It occurs less commonly in the matrix of the rock fragments.
Sphene aggregates are also common in the shear zones but sparsely distributed in the rest of the rock.
Opaques seem to be concentrated in the shear zones between lithic fragments in clusters of O.lmm crystals. They also occur in a few veins and as euhedral crystals in the fragments.
Estimated modal composition Quartz 35%
Muscovite JO%
Calcite 20%
Sphene 5%
Opaques 10%
Notes The light color of this sample is apparently due to the virtual absence of chlorite in the shear-zones coupled with the relative abundance of calcite.
Photo 1. Sample SRF-lA. Photo 2. Sample SRF-lA. Amphi-Amphibolite breccia. Plane bolite breccia. Crossed polarized polarized light. Width of lieht. Width of field 1~5mm.
field 1.5mm.- This photo- This photomicrograph shows a micrograph shows a typical major shear zone in the rock.
field of view of this sample. The elongate crystals are de-Note that the large dark- formed calcite. See also Photo 1.
ish hornblende crystals are sheared. The lighter grey crystals are plagio-clase. See also Photo 2.
Photo 3* Sample SRF-2A.
Mylonized quartz-mu s?ovite Photo 4. Sample SRF-2A. My-schisto Cross polar1zed lonized quartz-mu scovite schist.
light. Width of field 1.5mm. Plane polarized light. Width This photomicr ograph shows of field Oo5mm. This photo is one large lithic fragment an enlar~ement of the covering 3/4 of the photo- large li~hic fragment shown in graph and consistin~ of Photo 3* The roundish grains roundish quartz gra1ns and are quartz, and the mat~ix is fuzzy muscovite . The dark scaly muscovite , opaques, zones around the fragment, sphene, and tiny euhedral crystals are shear zones of chlorite of calcite as in the left center and other unresolva ble min- of the photo.
erals. See Photo 4 for an enlargeme nt of the lithic fragment.
Photo 5. Sa.mple SRF-2B.
Brecciated quartz-muscovite schist. Plane polarized light. Width of field l.Smm. Photo 6. An enlargement of This photomicrograph sh?ws a portion of Photo 5* Sample the chaotic texture typ1cal SRF-2B. Brecciated quartz-mus-of this rock. Note the len- covite schist. Plane polarized ticular fragments of vary- li~ht. Width of field 0.5mm.
ing grain sizes. The round This photomicrograph shows the white crystals are quartz; chaotic texture typical of this the darker minerals are rock. The round white crystals scaly muscovite, sphene, are quartz; the.darker minerals calcite and opaques. See are scaly muscovite, sphene, cal-also Photo 6, an enlar~ement cite and opaques. Note the of a part of this field similarity of this sample with magnified. Note the similar- SRF-2A.
ity of this sample with SRF-2A. .
Photo 7* Sample SRF-3A 67'*
Muscovite mylonite. Crossed Photo 8. Sample S~F-4A 4J'
- polarized light. Width of Chlorite augen gne1ss. Plane field 1.5mm. This photo- polarized light. Width of field micrograph shows the . 1.5rnm. This photomicrogra ph shows typical texture of th1s a polycrystall ine 'eye' (lower very fine-~rained ~ample. half of photo) in a crushed and The few larger gra1ns are fra~mented quartz crystals.
sheared matrix. The lif"ht grains They are set in a finely in the photo are mostly plagio-groundmatrix of quartz, clase and quartz. The large muscovite and lesser amounts darker grey crystals are chlorite.
of calcite, sphene, and Note th~ concentration of opaques. opaques in the shear zone in the upper right corner ..
Photo 9* S~mple SRF-5A 42'.
Sheared granodior ite.
Crossed polarized light. Photo 10. Sample S*RF-5B 17 5 *.
This photomicr ograph shows Altered olivine basalt. Plane a typical field of view polarized light. Width of field of this sample. Note 1.5mm. This photomicr ograph is a the large fuzzy grains. good example of the texture of They are kaolinized pla~io this sample. In the upper left clase crystals which have is an amygdule filled with twinned narrow rims of optically calcite and lined with fibrous continuou s quartz. These serpentin e. At the ri~ht is a rims were probably pro- phenocrys t of olivine which has duced as a result of the been completely replaced by serpen-kaoliniza tion. Note that tine. The matrix consists of the rims do not continue laths of plagiocla se (white) and along a quartz-pla gioclase darker crystals of pyroxene and grain boundary at the lef"t. black opaques. See also photo The medium grey grains are 11, an enlargeme nt of the matrix.
micropert hite, and the light grey ~rains are quartz.
Photo 12. S~mple SRF-7A 116'.
Photo 11, an enlargement of Ultramylonit e. Plane polarized
~ portion of photo 10. light. Width of field 1.5mm.
S~mple SRF-5B 175'* Altered This photomicrogra ph shows olivine basalt. Plane typical texture of this rock.
~olarized light. Width of Dark shear zones can be dis-field o.smm. This photo- tinguished against the back-micrograph is an enlarge- ground of highly crushed minerals.
ment of the matrix. See also photo 13.
Photo 14. Sample SRF-8A 155'*
Brecciated quartz-muscovite schist*
Photo 13, an enlar~ement of Plane polarized light. Width a portion of photo 12. Sample of field 1.5mm. This photomicro-SRF-7A 116'. Ultramylonite. graph shows a typical field of Plane polarized light. Wi~th view. Two la~ge lithic fragments of field 0.5mm. The rock ~s are separated by a dark grey shear so pulverized that only a zone consisting of chlorite, cal-few ~rains can be identified cite, and fineiy ground quartz and with-* certainty--some dark muscovite. The white grains in nodular sphene, a few the rock fragments are quartz quartz grains and a few which are surrounded by darker aggregates of calcite. muscovite, calcite, sphene. and opaque grains.
Photo 15. Sample SRF-8B 146.5'* Brecciated quartz muscovite schist. Cross Photo 16. Sample SRF-9A 80'.
polarized light. Width of Brecciated quartz-musco vite field 1.5mm. This photo- schist. Cross polarized li~ht.
micrograph shows parts of Width of field 1.5mm. The left three lithic fragments. hand side of the photomicrogra ph Two of the fragments are shows a lithic fragment of roundish coarser-grain ed than the quartz grains surrounded by scalv fragment in the lower right. masses of muscovite. At the The larRer roundish grains right is a stringy mylonite zone are quartz and the fuzzy consistin~ of pulverized-q uartz material is fine grained and muscovite with carbonate and masses of muscovite. A opaques. This sample is similar thin black line of chlorite to samples SRF-8A and BB and opaques separate the except for the absence of chlorite.
three fragments. Note the similarity of this sample to SRF-8A.
ATTACHMENT No. 4 K-Ar AGE DETERMINATIONS OF SIX SAMPLES FROM THE SCOTLAND ROAD FAULT ZONE GEOCHRON LAB ORA TORIES DIVISION 1 KRUEGER ENTERPRISES INC.
1 CAMBRIDGE MASSACHUSETTS 02139 1
for WESTON GEOPHYSICAL RESEARCH, INC.
WESTBORO, MASSACHUSETTS 01581
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION ll"h..,....,"A;~*i'~*:*~:-<<~*~*..,.,....,-v.,,,,"'f'>,....~;"..,.....'!"W.,.<<#,..J>U"'"**',:- * .
"'f""~*--<<**Jr_.,._.&,.,,.,..............,.,,,.,(!,.-,~.,..,'J.-w:"'~-...,_. ...__.....,,.._,£.,....,.-..:T~:.;o.~~A'*\-*~':t 2.4 BLACKSTONE STREET e CAMBRIDGE, MASSACHUSETTS02139 e (6171 8"7'5-3691 16 May 1974 Richard J. Holt Weston Geophysical P.O. Box 364 Weston, MA 02193
Dear Mr. Uolt:
Enclosed are the analytical reports of the K-Ar age determinations on two {2) of the six {6) samples sent to us by Gene Simmons at M.I.T. I have already given these results to you by telephone.
We analyzed sample 58 as a whole rock and obtained an age of about 199 m.y., and we analyzed a sericite concentrate from SA and obtained an age of about 24S m.y. This latter concentrate contained a significant amount of feldspar, but with a sample of this sort it is often not possible to obtain a high quality mica concentrate. The measured age of sample SA should be a reasonably good metamorphic age for the rock.
If you have any questions, please do not hesitate to contact me. In the meantime, I am enclosing our invoice for this work. I will contact you as soon as the remaining samples have been analyzed.
RHR/dm encl: 2 reports & invoice 14401 SPECIALISTS IN GEOCHRONOLOGY&. ISOTOPE GEOLOGY
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617) a76-J691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. R-2813 Date Received: 22 April 1974 Your
Reference:
SRF 58 (175 .. 1') Date Reported: 14 Hay 1974 Submitted by:
Richard Holt Weston Geophysical Res. Inc.
P.O. Box 364 Weston, MA 02193 Sample Description & Locality: Dark basalt drill core, SRF 5B (175.1')
Material Analyzed: Whole rock, crushed to -40/+100 mesh.
Ar 40
- /K 40 = .01230 AGE= 199 + 9 M.Y.
Argon Analyses:
Ar 4 0 *,ppm. Ar 40 */ Total Ar 40 Ave. Ar 40 *,ppm .
.01647
- 686 .01638
.01628 .,645 Potassium Analyses:
%K Ave. %K K qo ,ppm 1.095 1.091 1.331
- 1. 087 Constants Used:
A.iJ = 4.72 x 10 -to I year Ae 0.585 X w-) 0 I year K 40 IK = 1.22 X 10-4 g./g.
Note: Ar 40 *refers to radiogenic Ar 40
- M. Y. refers to millions of years.
KRUEGER ENTERPRiSES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-!176-3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. M-2820 Date Received: 26 April 1974 Your
Reference:
SRF SA Date Reported: 15 May 1974 Submitted by: Richard J. Holt Weston Geophysical P.o. Box 364 Weston, MA 02193 Sample Description & locality: Sericitized meta-sediment, drill core #SRF SA.
Material Analyzed: Sericite concentrate with substantial feldspar remaining.
Ar 40
- IK 40 = .01550 AGE= 248 + 9 M.Y.
Argon Analyses:
Ar 4 0 *,ppm. Ar 40
- I Total Ar 40 Ave. Ar 40 *,ppm .
.09410
- 891 .09629
.09848 .791 Potassium Analyses:
%K Ave. %K K 40. ppm 5.086 5.092 6 .. 212 5.099 Constants Used:
lnf~+ Ae x Ar40* + 1]
A{J = 4.72 X w-lO I year AGE Ae + 1\{3 L Ae K 4o Ae = 0.585 x 10- 10 I year K 40 /K = 1.22 X 10-4 g./g.
Note: Ar 40
- refers to radiogenic Ar 40 .
M.Y. refers to millions of years.
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE: STREET
- CAMBRIDGE:, MASSACHUSETTS02139 * !617) 876-3691 31 May 1974 Richard Holt Weston Geophysical Research Inc.
P.O. Box 364 Weston, MA 02193
Dear Mr. Holt:
Enclosed are the anal.rtical reports of the K-Ar age determinations on the remaining four (4) samples of the six (6) we received from Gene Simmfons last month.
The amphibole in SRF lA gave an age of 324 m.y. Samples SRF 2A, SRF 3A, and SRF SA 42 1 were analyzed as whole rocks and gave indist-inguishable ages of 256 m.y., 269 m.y., and 272 m.y. respectively.
Judging from past analyses we have done for you I suspect these numbers are about.what you expected.
If you have any questions, please do not hesitate to contact me. In the meantime, I am enclosing our invoice for this work. We look forward to serving you again in the near future.
Sincerely,
. //17~~
chard H. Reesman General Manager RHR/dm encl: 4 reports & invoice # 4414 SPECIALISTS IN GEOCHRONOLOGY & ISOTOPE GEOLOGY
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-876-3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. A- 28li~ Date Received: 22 April 1974 Your
Reference:
SRF lA up Date Reported: 31 Hay 1974 Submitted by:
Richard Holt Heston Geophys i ca 1 Res. Inc.
P.O. Box 364 Ueston, HI\ 02193 Sample Description & Locality: Coarse-grai ned amphibolite Material Analyzed: Amphibole concentrate , -40/+100 mesh.
Ar 4 h/K 40 = .02069 AGE= 324 + 14 M.Y.
Argon Analyses:
Ar 40 *,ppm. Ar 40 */Total Ar 40 Ave. Ar 40 *, ppm.
.01967 .679 .01974
.01981 .704 Potassium Analyses:
%K Ave. %K K 4o ,ppm
.786 .782
- 95lt
.778 Constants Used:
Af3 = 4.72 x 10 -to I year
'-e = 0.585 x 10-10 I year K 40 /K 1.22 X 10-4 g./g.
Note: Ar 40
- refers to radiogenic Ar 40
- M.Y. refers to millions of years.
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-ll76. 3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. R- 2617 Date Received: 26 April 1974 Your
Reference:
SRF 2A Date Reported: 31 May 1971 Submitted by: Richard J. Uolt Weston Geopbysical P.O. Box 364 Weston, MA 02193 Sample Description & Locality: Sericite schist Material Analyzed: Whole rock, crushed to -60/+100 mesh.
AGE= 256 .+/- 10 M.Y.
Argon Analyses:
Ar 4 0 *,ppm. Ar 40 */ Total Ar 40 Ave. Ar 40 *,ppm .
.03235
- 676 .03307
.03378 .807 Potassium Analyses:
%K Ave. %K K 40 ,ppm 1.699 1.689 2.061 1.680 Constants Used:
A(J = 4.72x 10- 10 / year Ae = 0.585 x 10-10 I year K 40 /K = 1.22 X 10-4 g./g.
Note: Ar 411
- refers to radiogenic Ar *Hl.
M.Y. refers to millions of years.
~H~
(, \ 6\\/ KRUEGER ENTERPRISES, INC.
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1
- I *l /\ GEOCHRON LABORATORIES DIVISION
\ I . + 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-1176 3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. R-2818 Date Received: 26 April 1974 Your
Reference:
SRF 3A Date Reported: 31 May 1974 Submitted by: Richard J. Holt l.Jeston Geophysical P.O. Box 364 Weston, !1A 02193 Sample Description & Locality: Sericite schist Material Analyzed: Whole rock, crushed to -60/+100 mesh.
Ar 40
- /K 40 ;:;; .01690 AGE= 269 + 10 M.Y.
Argon Analyses:
Ar 4 0 *,ppm. Ar 40 *I Total Ar 40 Ave. Ar 40 *,ppm.
.07748 .913 .07756
.07763 .787 Potassium Analyses:
%K Ave. %K K 40 ,ppm 3.782 3.761 4.589 3.741 Constants Used:
A.fi == 4.72 x 10- 10 I year AGE Ae = 0.585 x 10- 10 I year K 40 IK:::;; 1.22 X 10-4 g./g.
Note: Ar 411 *refers to radiogenic Ar '10 .
M.Y. refers to millions of years.
(
_\ KRUEGER ENTERPRISES, INC.
( v '
GEOCHRON LABORATORIES DIVISION
~e 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617) a76-3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. R-2819 Date Received: 26 April 1974 Your
Reference:
SRF SA 42' Date Reported: 31 May 1974 Submitted by: Richard J. Holt Weston Geophysical P.O. Box 364 Weston, HA 02193 Sample Description & Locality: Altered granodiorite Material Analyzed: Hhole rock, crushed to -60/+100 mesh.
Ar 40
- /K 40 = .01710 AGE= 272 +/- 10 M.Y.
Argon Analyses:
Ar 4 0 *,ppm. Ar 40 */ Total Ar 40 Ave. Ar 40 *, ppm .
.06782 .879
- 06893 '
.07003 .872 Potassium Analyses:
%K Ave. %K K 4o ,ppm 3.341 3.304 4.030 3.267 Constants Used:
A()= 4.72 x 10- 10 I year AGE ln["A@+*Xe Ar40* 1]
. A e
X K 40
+
Ae + A.{3 Ae = 0.585 x 10- 10 I year K 40 /K::::; 1.22 X 10-4 g./g.
Note: Ar 40
- refers to radiogenic Ar 40
- M. Y. refers to millions of years.
GEOLOGICAL INVESTIGATIONS of the PORTSMOUTH FAULT (Novotny - 1963)
PORTSMOUTH-HAMPTON, NEW HAMPSHIRE PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION SEPTEMBER 1974
PORTSMOUTH FAULT INVESTIGATIONS CONTENTS I. DEFINITION OF THE PORTSMOUTH FAULT 1 II. INVESTIGATION PROCEDURES 2 A. PRELIMINARY - GENERAL AREA 2 B. DETAILED - BREAKFAST HILL ROAD, GREENLAND 2
- 1. COAKLEY SAND PIT 2
- 2. LOCH-COOMBS RECLAIMED BORROW AREA 3
- a. GROUND MAGNETOMETER SURVEY 3
- b. BORINGS INVESTIGATIONS 4
- c. PETROGRAPHIC EXAMINATIONS 4 III. RESULTS OF INVESTIGATIONS ALONG THE INFERRED FAULT 5 A. NOVOTNY'S 11 FAULTED 11 OUTCROP EXPOSURES 5
- 1. ROUTE 1 BY-PASS, PORTSMOUTH 5
- 2. GOAT ISLAND, NEW CASTLE 6
- 3. BRUMLEY HILL, NORTH HAMPTON 6 B. GRANITE IN THE RYE FORMATION 6
- c. UNCONFORMABLE RYE/KITTERY STRATIGRAPHY 7 D. RADIOMETRIC AGE DATING 8 IV. CONCLUSIONS 9 REFERENCES 10 i
CONTENTS (CON'T.)
MAP SURVEY CONTROL 1 GREENLAND-Mc KENNA ASSOCIATES FIGURE l PORTSMOUTH FAULT INVESTIGATION S-SITE TO GERRISH ISLAND, MAINE FIGURE 2 PORTSMOUTH FAULT INVESTIGATION S-GREENLAND TO GERRISH ISLAND, MAINE FIGURE 3 COAKLEY SAND PIT 1 GREENLAND FIGURE 4 COOMBS POND AREA 1 GREENLAND ATTACHMENT 1 - GROUND MAGNETOMETE R SURVEY, GREENLAND ATTACHMENT 2 - GEOLOGIC BORINGS LOGS ATTACHMENT 3 - PETROGRAPHIC EXAMINATIONS ATTACHMENT 4 RADIOMETRIC AGE DETERMINATIO NS
PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION PORTSMOUTH FAULT INVESTIGATIONS Investigations have been conducted along the general path of the in-ferred Portsmouth fault between Portsmouth and Hampton, New Hampshire I in an attempt to locate and define the inferred feature and to examine the I
nature and structure of unconsolidated Pleistocene deposits which overlie bedrock in the area. (Figure 1)
All investigations have failed to locate or to suggest the existence of the Portsmouth fault. Well-stratified outwash sand deposits of Pleistocene age as exposed in the walls of a number of gravel pits at scattered loca-I lities along the general trend of the inferred fault, show no evidence of tectonic faulting subsequent to their deposition.
Consideration of all available facts leads to the conclusion that the Portsmouth fault does not exist.
I. DEFINITION OF THE PORTSMOUTH FAULT The Portsmouth fault was originally postulated by R. F. Novotny to trend southerly in an arcuate path for a total length of 12~ miles from Pierce's Island, Portsmouth, to the Taylor River, Hampton, New Hampshire (Novotny; 1963) . Novotny's bases for postulating the fault include:
- 1) brecciated and faulted rocks in the Kittery formation in an exposure on Route 1 By-pass Portsmouth; 2) brecciated and partly silicified Kittery I
formation rocks exposed on the southeastern shore of Goat Island, New Castle; 3) brecciated and partly silicified Kittery formation rocks exposed near the east end of Brumley Hill, North Hampton; 4) the presence of granitic intrusives in the Rye formation near the Kittery contact; 5) an apparently unconformable stratigraphic relationship between the Rye and Kittery formations along the trend of their contact zone.
Novotny further interpreted the Portsmouth fault to form the steeply west-dipping contact between the Rye and Kittery formations. Displace-ment was inferred to be down on the west, suggesting a normal fault.
Outcrops were reported to be too few and too poor to attempt calculation of fault displacement.
l
II. INVESTIGATION PROCEDURES A. Preliminary - General Area As a preliminary investigation of the Portsmouth fault J. R. Rand I
walked portions of the fault trace as it was defined by Novotny and I
examined gravel pits and highway road cuts and construction excavations in a strip about 2 miles wide overlapping the postulated trace of the fault from Portsmouth to Hampton. Each specific outcrop cited by Novotny as proof of faulting was also examined. R. J . Holt of Weston Geophysical Research, Inc. and J. R. Rand together viewed by helicopter the in-ferred trace of the fault between the Seabrook site and Gerrish Island, Maine. J. R. Rand also studied commercial aerial photographs covering the zone from the site to North Hampton, and his own color photographs taken along the path of the zone during the helicopter inspection. Back-hoe trenching and ground magnetometer surveys have also been conducted in Greenland, New Hampshire, 8 to 9 miles north of the Seabrook site, in an effort to locate the fault (Point "A" on Figures 1 and 2). Several bed-rock samples were taken along the zone for radiometric age dating.
B. Detailed - Breakfast Hill Road, Greenland Just to the northeast of the intersection of the New Hampshire Turn-pike and Breakfast Hill Road, Greenland, a wide area of outwash sands, ice-contact gravels and cobble till deposits was excavated for Turnpike con-struction subsequent to Novotny's field studies in the area (Point "A" on Figures 1 and 2; Figure 3; Figure 4). Within this large area, numerous low, glacially striated surfaces of Rye formation bedrock are now exposed in the floor of the reclaimed borrow area, in contradiction to Novotny's in-terpretation of Kittery formation terrane in this area. Survey control for investigations was provided by McKenna Associates Portsmouth (map I
attached).
- 1. Coakley Sand Pit As shown on Figure 3, backhoe trenching in an operating sand pit at the northwest corner of the area exposed additional outcrop of the Rye formation bedrock. Boring PF-1 was drilled on a NSOW (True) bearing at an inclination of about 43° to a depth of 276', taking oriented core samples, in a search for a possible Rye/Kittery contact in an apparent folded structure which underlay well-stratified and undisturbed outwash sands exposed in the north wall of the pit.
2
Boring PF-1 encountered only interbedded gneiss, fine-grained schist and thin interbedded quartzites of the Rye formation and was I
terminated as it passed to the west of the edge of the sand pit. The structure of the Rye formation in the boring as indicated by orienta-I tion measurements of bedrock foliation is that of a tight syncline which I
dips steeply to the west. Five zones of welded breccia were encountered in the boring the thickest of which included 7. 5' of welded quartzite I
breccia at 249. 5' to 257' depths in the hole. The brecciated rock in PF -1 was fresh compact, thoroughly welded or annealed, and did not I
show polished or slickensided surfaces on partings.
No mineralization, hydrothermal alteration shear zones or other I I evidence of major faulting was encountered in the boring. The welded brecciation is of the type found frequently in borings in metamorphic rocks in the region, and is interpreted to be associated with strains developed at the time of folding and metamorphism of the region during the Acadian orogeny. Two diabase dikes encountered in the boring were fresh, unaltered and showed normal intrusive contacts.
I
- 2. Loch-Coombs Reclaimed Borrow Area As shown on Figure 4, three core borings (PF-2 PF-31 PF-3A)
I were drilled across the property line between lands of Anthony Loch and Richard Coombs, at the north edge of a reclaimed borrow area to the north of Breakfast Hill Road to investigate the western boundary of a local I
magnetic anomaly.
- a. Ground Magnetometer Survey Because the bedrock exposed throughout the Breakfast Hill study area is represented only by Rye formation metavolcanic rocks for as much as one-half mile to the west of Novotny's fault trace and com-I prises no outcrops of Kittery formation quartzites as had been inter-preted by Novotny, the presence of a fault contact between these two formations in this area cannot, by definition exist. Having no forma-I tional contact to investigate for these current studies, Weston Geophysical Engineers Inc. undertook a ground magnetometer survey to determine I
whether any anomalous magnetic features might occur which could sug-gest faulting within the Rye formation itself. Technical details of this survey are presented in a report by Weston Geophysical Engineers, Inc.,
attached herewith.
3
The magnetometer surveys show no anomalous magnetic intensities in the zone of Novotny's fault trace in five profiles which were conducted ac-ross the inferred trace at intervals influencing a zone of almost 4, 000' along the trace from north to south. In the area of Coombs Pond (Figure 4) ,
a local magnetic a no mal y high was detected on 3 survey lines {Lines 6, ZNR and 2R) . The apparent alignment of this anomaly is about NlOE, parallel to the strike of bedrock foliation in the area. Novotny's inferred fault trace in the same general area strikes about N40E, trG!nsverse to foliation.
- b. Borings Investigations Two borings, PF-2 and PF-3A, were drilled at approximately 40° in-clination to the southeast to investigate bedrock conditions at the western boundary of the local magnetic anomaly. A third boring PF-31 was drilled I
vertically to determine bedrock depth prior to drilling PF-3A. The results of these borings are generalized in cross section on Figure 4, on which also is projected the magnetic profile of Mag. Line 6.
Overburden 1 which was not specifically sampled in these three borings I is comprised of outwash sands overlying a sandy boulder till. Boring PF-2 was drilled to a depth of 271' (about 201' in bedrock) in light gray banded gneiss and I
dark green amphibolite, intruded locally by weakly magnetic diabase dikes. PF-3 was drilled to a depth of 50' ( 10' in bedrock) in gray and greenish gneiss. PF-3A was drilled to a depth of 204. 3' (124' in bedrock) in gray banded gneiss dark I
green amphibolite and at the bottom 5' of the boring, notably magnetic, salmon-I feldspar gneiss, with a single diabase dike. The location of the basal magnetic gneiss in PF-3A conforms reasonably with the downward projection on the local bedrock structure of the magnetic anomaly found by surface surveys. The weakly magnetic dikes in the borings conform with a slight increase in magnetic intensity found by surface surveys.
The condition of bedrock in PF-2, PF-3 and PF-3A was weakened by weathering effects on moderately .closely-spaced jointing to about -70' Eleva-tion. In no boring however, were there slickensided or polished joint sur-I faces, gouge zones, hydrothermal alteration or any other visible evidence of bedrock faulting.
C. Petrographic Examinations The petrography of three samples of drill core from Boring PF-2 has been described by Professor Gene Simmons and Dorothy A. Richter of Massachusetts Institute of Technology.
4
Sample Depth Field Description Petrographic Description PF-2A 99.5 - 99.9' Gneiss Felsic Metatuff PF-2B 136.0- 136.5' Diabase Metabasalt PF-2C 262.0 - 262.4 1 Amphibolite Fine Grained Amphibolite Simmons and Richter conclude from their studies that 11 Evidence for dyna-mic structural deformation either recent or ancient is entirely absent. In sum-I I mary, we find no petrographic evidence that these three samples are associated with a fault. If a fault does exist in the region from which these samples were obtained, then either its deformation was not so pervasive as to effect these three samples, or else the deformation occurred before metamorphism and all petrographic evidence has been erased by the last metamorphic event 11
- The full report by Simmons and Richter is attached herewith.
III. RESULTS OF INVESTIGATIONS ALONG THE INFERRED FAULT None of the current investigations along the path of the inferred Portsmouth fault has detected or suggested the presence of a through-going fault structure along the zone of the Rye/Kittery contact between Portsmouth and Hampton. No exposure of Pleistocene deposits seen along this zone has shown internal structures suggestive of tectonic fault displacement.
A. Novotny's "Faulted" Outcrop Exposures
- 1. Route 1 By-pass I Portsmouth (Point "B 11 on Figures 1 and 2)
Novotny cites a road cut on the north side of the Route l By-pass in Portsmouth as suggesting the presence of the Portsmouth fault nearby, but not within, the road cut exposure. This exposure shows two steeply west-dipping zones of weathered and rusty rock material interlayered in gneiss and quartzite. In one of these weathered zones, an open drag fold was interpreted by Novotny to represent differential movement, down on the west.
This folding could also represent simple folding of the beds signifying an 1
anticline to the west.
The rock materials within these two weathered zones are not slicken-sided or mineralized, and the rock adjacent to the weathered zones shows no hydrothermal alteration. Very similar open folding can be seen in an un-weathered exposure of quartzitic rock near the Rye/Kittery contact, 3. 54 miles S52W of this locality, on the west right-of-way of the New Hampshire Turn-pike, where there is no evidence of fracturing. Fold structures of the type 5
seen at the Route 1 By-pass and on the New Hampshire Turnpike right-of-way are most logically explained as simple small-scale drag folding formed during the regional folding of the Rye anticline. The exposure on the Route 1 By-pass is suggestive of faulting only because it is weathered. Rye formation rocks occur on both sides of the weathered zone at the Route 1 exposure.
- 2. Goat Island, New Castle (Point 11 C!I on Figures 1 and 2)
Bedrock structure on the southeast shore of Goat Island is a complex jumble of brecciated Rye formation metavolcanics and quartzite. The breccia is welded and is intruded by diabase dikes. No "trend 11 of faulting is ap-1 parent at this locality to suggest a through-going fault plane which might connect this exposure with the exposure cited on the Route 1 By-pass I 2.1 miles to the southwest.. The apparently random distribution of meta-volcanics and quartzite breccia blocks suggests that fault structure in this area may represent explosion breccia, which Hussey (1962) has also found as discontinuous masses 3 miles to the east on Gerrish Island, Maine.
Hussey suggests that the breccia at Gerrish Island may relate to volcanic activity associated with the Cape Neddick and Tatnic volcanic complexes, southwestern Maine.
- 3. Brumley Hill, North Hampton (Point 11 F 11 on Figure 1)
The brecciated quartzite cited by Novotny for the east end of Brumley Hill showed some healed fracturing and rusty staining in a dark, fine-grained quartzite. Billings (1956} interpreted this area to lie in a broad fold zone in the Rye formation. No through-going shears were apparent in the exposure to suggest the presence of faulting. The exposure no longer exists having been removed during construction of a new north-bound lane I
of the New Hampshire Tunrpike.
B. Granite in the Rye Formation Novotny states (1963; p. 147): 11 Although metamorphic zones are apparently not displaced because of the fault, the presence of concordant foliated and granulated Breakfast Hill granite only in the Rye formation and near the Kittery formation contact supports the hypothesis of a fault de-veloped during the Acadian period of orogeny along which deeply buried I
and intruded portions of the Rye formation were elevated 11 * (Point 11 0 11 on Figures 1 and 2) 6
Foliated granite, seen in a number of places in the Rye formation, appears to be a primary metamorphic constituent of that formation, having formed by recrystallization (I' granitization") of the inherently feldspathic Rye formation rocks. These granitic masses appear genetically related to a process of metamorphism within the Rye, rather than to plutonic in-trusions from a separate deep-seated source. Because of the fundamental lack of feldspar in the Kittery formation, furthermore no comparable 1
granitization of the Kittery could have occurred at the time the Rye was being recrystallized and granitized.
Whereas the granites of the Rye formation to the east of the Rye/
Kittery contact do not in themselves offer any proof that the Rye has been elevated relative to the Kittery, plutonic intrusives of the Exeter diorite are found in the Kittery formation to the west of the Rye/Kittery contact, tending to negate an hypothesis of fault displacement based on the presence or absence of igneous rocks in the metamorphic terrane.
(Point "E" on Figures 1 and 2)
C. Unconformable Rye/Kittery Stratigraphy Whereas Novotny interpreted an unconformable stratigraphic rela-tionship between the Rye and Kittery formations in the area between Ports-mouth and Hampton, outcrops of the two formations are widely scattered, and the contact between these formations is nowhere exposed along the 121 mile path of the inferred Portsmouth fault. On Gerrish Island, Maine, about 5 miles east of Portsmouth, Hussey (1962) interprets the Rye/Kittery contact to be conformable grading upward through progressively less I
feldspathic gneisses of the Rye formation into biotite quartzites typical of the Kittery.
Novotny Hussey and Billings (1956) all define the Rye formation as I
metavolcanic and the Kittery as metasedimentary, predominantly quartzite.
- Novotny interprets the contact between these two formations to be defined by a major fault structure, while Hussey and Billings do not. Novotny, further-more defines the geographic location of the Rye/Kittery contact as much as I
three-quarters of a mile to the east of the contact trace defined by Hussey and Billings. Figure 1 shows by a dotted line the contact between the Rye metavolcanic member and the Kittery formation as defined by Billings to the southwest and by Hussey to the northeast.
7
Current investigations have indicated that Novotny's contact trace trends from Portsmouth to North Hampton through a terrane characterized only by bedrock exposures of the Rye formation metavolcanic member.
Since the metavolcanic member of the Rye is made up of an original sequence of different types of volcanic rocks and interbedded sedimentary units, unconformable stratigraphic relationships might be expected in the zone where Novotny has defined the Rye/Kittery contact. Such relation-ships would not, however, signify the presence of a major fault zone.
Furthermore, foliation structure symbols shown on Figure 1 (after Novotny and Hussey; and J. R. Rand reconnaissance) indicate a reasonable parallel-ism of bedrock structure along Novotny's inferred fault trace in this area, with no suggestion of the alledged formational unconformity.
D. Radiometric Age Dating Four outcrop samples (PF-Sl, -82, -83, -84) were taken at intervals along the path of the inferred fault for radiometric age dating (K-Ar) . The locations and K-Ar ages of these samples, along with three other samples taken from Borings B2, B4 and B9 at the site area in 1969 are defined on 1
Figure 1. Age determinations were obtained by Geochron Laboratories 1 Division of Krueger Enterprises, Inc., Cambridge, Massachusetts.
Sample Location Rock Type Material K-Ar Age PF-81 Towle Road, Hampton Quartzite Biotite 268~10 M.Y.
PF-82 Rte. 151, North Hampton Quartzite Amphibole 308+/-14 M.Y.
PF-S3 Rte. l, Portsmouth Gneiss Muscovite 294+/-10 M.Y.
PF-84 Rte. 1 , Portsmouth Quartzite Mica-Quartz 262+/-11 M.Y.
B2 129.5' - Boring B2 Qtz. Diorite Biotite 294+/- 9 M.Y.
B4 93.0 1 Boring B4 Schist Biotite 254+/- 9 M.Y.
B9 12.3 1 - Boring B9 Bio. Diorite Biotite 284+/- 9 M.Y.
No anomalously young ages were found in this dating program. All ages found conform to previously reported regional data which indicates a Permian thermal event for the area (Zartman et al, 1970) . The lower ages obtained in this investigation (PF-S1, PF-S4 and B4) are mineral dependent, with argon loss associated with the fine-grained materials analyzed.
8
IV. CONCLUSIONS Field investigations have shown that
- 1. The graphic trace of the alleged Portsmouth fault bears no meaning-ful spatial relationship to the contact between the Rye and Kittery formations, along which the fault was postulated by Novotny to trend.
- 2. There is no evidence of the alleged unconformable relationship be-tween the Rye and Kittery formations.
- 3. There is no evidence of anomalous magnetic intensities on the in-ferred fault trace in Greenland, New Hampshire.
- 4. Examination of drill cores in the area of the alleged fault trace in Greenland, complimented by petrographic studies of core samples, indicate no evidence of faulting in that area.
- 5. There is no evidence of a through-going fault structure associated with the specific bedrock exposures cited by Novotny as indicating the presence of the Portsmouth fault.
- 6. There is no justification for ascribing the presence of granitic rocks at ground surface in the Rye formation terrane to the differential uplift of these rocks alonq a nearby fault.
- 7. There are no meaningful variations in radiometric ages of rocks along the alleged fault trace .
- 8. Ground and aerial examinations have failed to detect any anomalous landforms or stream patterns along the trace of the alleged fault.
- 9. Pleistocene deposits exposed in road cuts and gravel pits along the alleged fault trace show no features which might imply tectonic faulting in the area.
The current investigations have concluded that the Portsmouth fault does not exist.
John R. Rand Consulting Geologist September 197 4 9
References:
Billings M. P. (1956) The Geology of New Hampshire - Part II: Bedrock 1
Geology. Department of Resources and Economic Development; Con-cord New Hampshire.
I Hussey, A. J. II (1962) The Geology of Southern York County Maine.
I Special Geologic Studies No. 4 Maine Geological Survey; Augusta, I 1 Maine.
Novotny, R. F. (1963) Bedrock Geology of the Dover-Exeter-Portsmouth Re-gion New Hampshire. Doctral Thesis, Department of Geology, The 1
Ohio State University; Columbus Ohio.
1 Novotny R. F. (1969) The Geology of the Seacoast Region, New Hampshire.
I Ed. T. R. Meyers. Department of Resources and Economic Develop-ment; Concord, New Hampshire.
Zartman, R. E., P. M. Hurley H. W. Krueger and B. J. Gilletti (1970) A I
Permian Disturbance of K-Ar Radiometric Ages in New England: Its Occurrence and Cause, Geological Society of America Bulletin I Vol. 81 1 3359-3374.
10
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"~.,. _ .... '~ .# I FIGURE 1 PUBLIC SERVICE COMPANY Of NEW HAMPSHIRE SEABROOK STATION PORTSMOUTH FAULT tNVESTIGA TIONS John R. Rdnd, Coruw-Jtiog Geolog1st
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WtllkS PI PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION PORTSMOUTH FAULT INVESTIGATIONS FIGURE 2 Exeter Diorite Granite and Pegmatite Eliot Formation Kittery Formation Rye Formation- metavolcanic Rye Formation- metasedimentary Foliation or Bedding lO:l
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- '170 in Oriented Drill Cores SEABROOK STATION PORTSMOUTH FAULT INVESTIGATIONS COAKLEY SAND PIT BREAKFAST HILL ROAD GREENLAND. NEW HAMPSHIRE John R. Rand, Consulting Geologist
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-50'-
GEOLOGIC PROFILE PF'*2C 1 FIGURE 4 PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION PORTSMOUTH FAULT INVESTIGATIONS COOMBS POND AREA BREAKFAST HILL ROAD- GREENLAND, NEW HAMPSHIRE John R. Rand. Consulting Geologist
ATTACHMENT NO . 1 GROUND MAGNETOMETER SURVEY BREAKFAST HILL ROAD AREA GREENLAND, NEW HAMPSHIRE WESTON GEOPHYSICAL RESEARCH, INC.
WESTBORO, MASSACHUSETTS
GROUND MAGNETOMETER SURVEY BREAKFAST HILL ROAD AREA GREENLAND, NEW HAMPSHIRE
SUMMARY
This report details a ground magnetometer survey conducted by Weston Geophysical Research, Inc. in the vicinity of Breakfast Hill Road 1 Greenland I New Hampshire. This study was completed in conjunction with a general geologic investigation of the inferred Portsmouth fault, as proposed by Novotny (1963).
Five separate magnetic lines were run across the trace of the in-ferred fault. No magnetic evidence for faulting was found on any of the profiles.
INSTRUMENTATION The survey was begun with a vertical field, torsion magnetometer (Askania, Model Gfz), which is tripod mounted and must be leveled prior to each reading. Because this procedure is difficult in soft. or swampy ground, which is extensive in the. investigation area, the vertical field mag-netometer was replaced with a total field, proton precession magnetometer (Geometries, Model G-816), which requires neither tripon nor leveling.
METHOD The survey method consisted of making total magnetic field intensity measurements at paced intervals along a predetermined line. The interval used varied from 50 to 100 feet. The magnetic sensor was oriented north (magnetic) for each reading, . and readings were repeated to insure precision.
A base station was established, and base station readings were taken reg-ularly to determine the diurnal variation of the earth 1 s magnetic field during a given portion of the survey. The diurnal variation has been removed from the final profiles. Careful notes were taken during the survey so that the presence of magnetic interference sources (i. e. , power lines, buried metal, houses, parked vehicles 1 etc.) could be considered in the final analysis.
RESULTS Total field intensity magnetic profiles were made from data for five traverses in the area of investigation. As shown in Figure Ala, Profiles 2R, 2NR and 6 are located at distances extending up to approximately 2, 500 feet northeast of Breakfast Hill Road I near Coombs Pond. Profiles 4 and 5 are located at distances extending up to approximately 1, 500 feet southwest of Breakfast Hill Road. All five magnetic profiles crossed Novotny's inferred fault trace at nearly perpendicular angles. Any magnetic expression of Novotny 1 s inferred fault {within the Rye formation) should, therefore, have been readily apparent.
Figure Ala locates the inferred fault trace rel'ative to magnetic pro-files reported in Figure Alb at or near the following profile points: 3+0 on Line 6, 1+5 on Line 2NR, 16+0 on Line 2R, 15+0 on Line 4, and 13+0 on Line 5.
No evidence of the postulated fault was found. Further examination of the profiles indicates that localized anomalies, probably due to local variations in magnetic mineral concentrations known to be present in the Rye formation, appear on each of the traverses near Coombs Pond. Pro-files 6, 2NR and 2R show such an anomalous condition, which appears to trend NlOE in the vicinity of the three lines. It should be noted that this strike is parallel to the bedrock foliation of the area.
57,200- LINE *s
-57,200 MAGNETIC PROFILES
-57,000 FIGURE Alb 1/) 57,000-
<(
I
<(
"'56,800-
-56,800 56,600"'" I I I I I I I I I -56,600 0+0 2.:0 4>0 6>0 8tO 10>0 12>0 14*0 16+0 57,200- -57,200 r'J7,ooo-- -57,000
-156,600 56,6oo- -156,600 I I I I I I I 0+0 2>0 4<0 6<0 8tO 10<0 12>0
-57,400
-57,200 LINE 2R -57,000 57,000-
-156,800
-56,600 156,600- I I I I I I I I I I I I I I I 16+0 20*0 22+0 24+0 30>0 32+0 34>0 36>0 2+0 4<0 8tO 8+0 10+0 12.>0 14<0 800
..J
~600 <(
ll! !:!
33,000-ll! I;;
<(
+-... . . _____ --.... --------_. ...-.. -.,.J>------o---------.. . _.
"'401>
- ~
l32,8oo- (li.---------.. . --o' ...... ., ............ - - ......... -G-------0""""'""-
_,..A..--
+----- -32/!JOO 200
~
f -32,600 HORIZONTAL 32,6oo- I I I I I I I I I I I 14>0 16>0 18*0 20+0 22+0 24>0 26+0 4+0 6*0 8*0 10+0 12<0 0 100 200 300 400 FEET GROUND MAGNETOMETER*SURVEY BREAKFAST HILL ROAD AREA 117,000- -!17,000 GREENLAND, NEW HAMPSHIRE fer PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION I I I I 1 1 -!16,800 156,600- I I I I I I I by 2*0 4+0 6+0 8+0 10+0 12+0 16+0 18+0 20*0 22+0 24+0 28+0 29+0 WESTON GEOPHYSICAL RESEARCH, INC.
FIGuRE AI
LOCATION Ata FIGURE
ATTACHMENT NO. 2 GEOLOGIC BORINGS LOGS BORINGS PF-1, PF-2, PF-3, PF-3A
BORING LOCATION See Breaktaot Hill Rn, *tte plan INCLINATION .....!.!hL_ BEARING ~ DATE START/FINISH F"b, 19, 1974 I March 21. !974 C.ASING lP _ __,3!..!!Jin..___ CORE SIZE 2-1/B to 1*7/8 ln. TOTAL DEPTH __2,_7,_,6:.:.*O:;_.....;fi"- DRILLED BY American Drilling & Jlorlng Co.! J<, Allen GROUND EL (MSL) 79. l rt DEPTH TO WATEII/DATE 1~. 7 !t I WCCEO flY Soli- K. l'olk* l\ock- J. R. Rand EL. SAMPLE RATE C~~t~fh. orRQD PRESSURE TEST STII!KE, !liP F = Foliation .., fQ SOIL AND ROCK DESCRIPTIONS MSL Deplh~~'l'.n>e II OF Computed J tJo.int a::< {Weathering* defeotft, t'to~) (Type, texture, mlneralOJ[Y 1 ft ft and No, or ADV.
Reo. ~In/! 'J Graphic
.ll!m. 1< C = Conlan!
II
- ll<oddtng 8 ::JOl color. hardnese
- etc.)
pal tO ...J om/ooo at - S ~ Sllol<on * !A" 0.5 NX-l !00 4.U 0 '"""r rusty F'resh anrl harrl. J,r><wl . z::::nrag 0UJ8 - senRe ()
TOP OF ROCK Slight wx on NX-2 100 4. 7 21 minor rusty nnrl flurrace * .:_: ~ *-** lflOVement westt side up to foliation and wx <'l:Cf('ot~ on toinls nn,t :.:,,':_...'the CMAt- syncllnc to west NX-3 100 6.~ 25 tntnt* Rome partinl(e:. Parting!! ~~f. Rye formaUon. Fine to 10 NX-4 tOO 4.1 74 not ollckcnslded. ,.*,.*.*.~ Wclflt."d very flnc-grntned. med- _
Slight wx ~"l:-i:: hrecc!a tum dnrk gray, Thinly I)
==:J~eldod and evenly foliated, met*-
NX-5 100 6.8 50 Minor rust : ;_:.; ~ *. ;.tliab~u1 e volcanic, Fine fcldspathl~
Slight wx , ~.-~- ;~
1 1 quartaitc. nreooiatcd NX*~ 100 9.0 56 -:~ ~ ;anch~R !:~~~~:.es wolricd with _
FroRh nnd harrl. Minor Moderate wx ru:;;ty, vugey lOnf'::t n;~< *:~-:* :.
NX-7 100 5,0 89 Moderate wx
!loclntcd w1th jointR nml pRrtinga nof sllclwmlidC'rl, :--:--""*.-*
~"'!"~"' Gne!Rs NX-8 1M 2.7 35 'llll:..:oo D
NX*9 100 5.1 62 !)
Minor rua!y NX-10 9G 5. 6 62 NX-11 100 NX-12 100 5.5 5,0 12 r I II Slight wx Minor rusty
~
NX-13 100 B.O 43 Mode:t'~tte wx NX-14 . 92 15,5 42
~
NX-15 96 13.1 22 85° joint NX-16 100 7.3 Ry<* (nrmatinn* Prerinmi-
!-SO NX-17 D4 NX-1R 100 6.8 7.9 70 95 L; Calcite' coating nantly flne-grai:IC'rl, dnrk_
gray hornft*lslc Achl~l.
\'t-ry denH£> t('xturo. Intttr NX*l9 100 10.0 100 D layered with zones nf NX-20 100 6,0 100 qua rb.o~e, l*'cldsp!tlh ic gneiss, medium to con r!'l~
grained. light gr;lV. All-NX-21 tOO 11.2 92 contacts arc tight, fu~cd.
Somewhat tramritinnal.
NX-22 100 12, B 88 Mrnicr:dc- wx Inh~rln_vcrcr! finc-grninC'rl
-so Ruely stain fol~spnthlc gnolss. J,lght-:
NX-23 97 18.4 73 grny
- nnd rtm:~-graincd.
N37E, 74NII. I' dn rk gray hornfe I* lc N60E, 32SE S schist.
' NX-24 100 8, o 65 ~~~f:il~ ~
+20 N50W, 4NE J Scn"'c n( Fomr o;wn drag-
~O
- NX-25 100 I N?SE, ANW ,J e
folding 51-U~gm;t~ thnt v
N33W, lANE J synclina is to the west.
7ANW f Rock fahrlc o!!<<*t locnlly NX-2 96 17.4 R6 N~2E, by wclde~ m lcro Inuits.
7.2 NX-2 100 ?3 NR3!!:, J2SE ,1 -
NX*2 100 5.6 95 F'r<"s.h nnil hm*cl throu.~h Rvn fnrrnntinn. P.n*rlnml out~ Jotnh; ami partings: n\lntlv finn-grniru.~o. dark 1]( arc gi:'nora11y clean. Not grn)' (lmrn!ololc) !eltls- -
wx. Surfac£'f': arc not pnthic schist. VC"r;,* hnrd u *Ucl<onoldc~. Almnst mnsRivc texture.
N fiW, lO!IF. J lntcrborl!lc<l locally as NX-3 100 24.4 75 ~I.Ht: P.'l~~ :1 shown with fairly pure NISE, 73NW F white quarbllo bed*. -
NX-3 99 5.6 92 N20E, 62NW F f'rcsh nnrl hnr1l through-NX*3~ 97 4.0 95 NIOW, 77SW F Minor chlorll<> out. Joint< nnri pnrtin~"
UyC' formation. ns nbov!'.
N41W, 6tiNE S l)yrltc coated f\f(' clNm. Nt't f\lickon ..
Nfl.flE. fl:INW f'
!'alrlv oven tv, th!nlv _
Rl<ir~. !Ins nnly very N!i6E, 74NW F laminntC"d throughout, NX-3. 100 G.2 90 minor tcmlcnny tn pn rt nlthou~h lnm inoc !non Hv on fo1intton.
N33F., 69NW - nrc wnvy, some complax-::
NX*a4 100 5, fi 100 lolrlln~.
f7i
[)
N47E, 35SE J On follollon
-20 NOl'ES N
Reo -
- Stllndard penetration reololanoe, blow*/ft Length ,...eov*rwt/len!llh aond, 1 n No day,.; fJTI'$t(*nt; !h**i'"l'f<'lrf' no water SEABROOK STATION RQD- Length of oound oore 4 ln. and longer/length cored, 1* I*IIIII.IC Sf:IWkF: C'OMPANV'~lt' NF.W IIAMI'SII!RE
!i J ormtf!nl~ WPr<* dutcnntn(*d.
S 8 U
Split apoon oample UDdllllurbed oampl01 Grnundwoter t Y ~NKf:f: ATOMIC t:U!C'i'lliC COMPANY
-l s - Sllolby tube N - Denio"" Cl~!!!~~*--~~
F- Fixed pta ton P - Plteh..r o- O.tAorberg 0
- OEI Dntt*: Mnv 1*1* l!\74 Project 7286 D
- Drllllnr bMtk k - Coolllclenl of
""' - Weathered, WlU\tberlng ""rmeabilltv x "' Orl('nlt:d cort*
BORING WCATION See Breakfast Hill Rrl, *lie plan INCI,INAT!ON ~ fli'ARING --tl...JiJUL_ DATE START/FINJSII Foh !9 1974 I March 2! 1911 CASINO ID _ _,3:::1n"-.- - - CORE SIZE 2-!/8 to t-7/9 ln. TOTAL DEPTH _ _,2'-'7-"r.,_,.O:.__!!.ft DRILLED BY Americ*n Drilling & Jlorlng Cn.
- K. Allen GROUND EL CMSL) 79,1 ft DEPTH TO WATER/DATE JJ.? ft/ WGGED llY ~nil - K Pnlk; l\nck - J R. R*nd STRJKE, DIP EL. SAMPLE RAT! c';';~i~llr orRQD PRESSURE TEST SOIL AND ROCK DESCRIPTIONS MSL Depth Type N OF Computed F
- Foliation "' !Q (Weathering, detects, etc.) {Type, te:Jrture, mineralogy,
&Dd or ADV. .&1!!!!. k ~ : ~"o':Nact :5 ;J colo-r, hardnefi'S, etc.)
ft ft llo. Reo. imtn/f % Graphic pal 10- om/oeo B =Bedding U iii
~.~~--4---~---1----+--------1----+--------4-----------4~~M~i~.l~a7tc~h-----,-r-c-ah--n-nd--hn-t-ri-.-S-o_m_<--~~~~~~-.~-.~~--------------------------~
NQ-a 100 9 2 100 g minor powd<-ry wx effects'.',:;;:. (;nei*s J Prcdom!Mnt!y qunrt7.l\c, _
- 4. 8 89 17 t7
~~~~. ~~~~
N32W, 2RNE J on some joints and part-
- lngn, No polishing, i<! 4- . Gneiu Vt:'ry finc-~ndnen, medium grny. F'ni rly mass tve.
l.ocnl tntcrbeds of fcld*-
!NQ-3a too s. 0 87 ;;;;;~ "h g
(L N:!2E, f>2SE N1RE, r.osr. JJ pnthic gneiss. Fused fault N45W, lONE J F' C:.- alcltlc plune nt 155. 3'. _
e 5, 2 190 FrcRh nnd hord. Joints ~. ..~
Rye formation. Vi ne--gra Lncd jNQ-40 96 5. 4 91\
NtSW, 28Nf. J ~::ai~~~:~:::;r;ent~. :~~~ dark ~ray (cldspnthio quart-Fairly cvt>nly 1 hut N65\\', fi1SW J Partin~s arc not pollnhcd*i~~ zite~
vaguely foliated.
E-t 70 jNQ-41 N40E, 615!( J Minor ruaty -
~
98 11.6 71
~Q-42 !00 5,6 95 N35E, !65E J t.:+/-
-40
~ )uartz!tc rtsc ~~g~: ~~~~ ~ Fresh anrt hll r'fl. Joints ~ loneiss Rye formation, Rf> aOOve -
~Q-4.1 100 4. 0 50 ()
o.nrl pnrtlng::~ ::<how only ~"'* with loonl1.ones nf £o1ds-D local minor wx cffectfl, .,;;.~* pathizeO quartzite nnd feld-
- "'Q-44 93 93 Not slickeneide:d or spalhlc guelss.
poll* hod.
~g( fQ-45 100 6.0 58
~:~:":"~ -
f'IQ-46 92 7.8 0 vII I; -
f!';..+{
riL Chips:-slight ~ ~\'(*ld~rl brcccin nl contnef wx effects FrC'~h anrl hnrd. f:xoe1l- , R' Fused contact rlios 1\0°
~0( ~Q-47 tOO 18.0 52 cnl drilling. PRrtln~s In 99 diabase break ncross r t + !Chill Diabase, Medium-grained
- e. s 100 core. Not jointed. Not t- r r dn rk gray with white pheno-rQ-48 100
-t-'1"!' cryst spotting. Notably wx or sltckensldefi.
-50 calcitic, NQ-49 JDO 3, 6 100
~ t' 't' f"t'!"' Diabase , as above
- NQ-50 100 4.2 100 Sllght wx .t ';.~ -
~
lB. 7 , Fused contact FrN;h and hnr1t. Onl}' ~~{~
- -'<2 NQ-51 100 minor RUrface: wx offJ'ats j ;--;- * ~ Ryu formntlon, Fint<-
f7 ;-
.~,
on ioinl'l nnd partings. , graincd, medium to dark NQ-52 100 8,0 100 Not slickensided. >'~~'Y.,.. gray~ Feldspathic, evenly
~~~ foliated throughout, N15E, ~5SE ~* J....;.....!...
- --z 3 NQ-53 tOO 14. o too NROE, liSE S D
\*~~
NOOW, A5SW J Pyrite xt~l*
~
NQ-54 100 5.0 40 Chips-fresh !==:~
-BO NQ-55 100 4.0 98 N 5E, 86SE N60E, !SSE F
S Slight wx Fresh and harrl. Only minor tlurfncc wx effect.-; ~~
.,~
Rye rormnlian. Fine ..
j(rnfncd~ dnffi grny. E\*cn.~
Pyrite on Joints and pnrlings. ~--;- foliated lelosrathic quartzite~
- ~;77 Slight wx Not sltokenslderl. ({ua-rt7.ite* Fine, mE'clium NQ-56 98 5, 0 97
,',': ~roy.
NQ*M 100 7.0 45
- FU!'u:~rl contnct
~"*
t 49 5 N21f:, 38SE S Not wx ,,a*A W~1docl breccia. (~artzitc A'4*
A~.;:::;, frrtgn;cnts, nngulnr with som1 NQ-51 100 8.0 33 N20E, 75SE J Vuggy *.il"".O. vcinin£, Ann<'U leO rock throutiftou!
,0' N13E, Horl7,, F ~*rcsh and hard. Only NQ-5! 190 6.6 43 unrt?;lte Rye (onnntion. Predomi-m lnor surface wx: cffcctR nantly fino-grained, dnrk "':
N7ijW, SNE J Chlps-sll~ht gray feldspathlc quartzite.
NQ-r. 100 6, 0 33 N25E 1 Vert F RUrfacc wx Diabase 75SE I*'
NJO~;,
- 100' NQ-6! JOO N42W, 50NE S 1:"2? Diaba~e.
Fused NQ-6 100 6.8 100
~76~--t--+--1---r-----+-~r-----+-------~~--------------------=-~------------------~
f- D<YI'TOM OF' DORING N - Standard peno~n~lon reolstanoe, blows /ft Rec ... Length recovered/length cored. %
NOTES SEABROOK STATION RQD - Lengt~ of sound ooro 4 ln. and longer/length cored, ':t I'U!ll.JC SF:RVICE COMPANY OF NEW HAMPSHIRE
~ 8 Split opoon .,.mple ; Groundwo.t..r Y 1\NKF.f. ATOMIC t:u:r.TRIC <:OMPANY
_ U - Und toturbod . .mpleo
§ s - Sholby tube N - D<lnlonn q~.~!!~*-~~
F- Fixed piolon r - Pitcher 0- OOIA!rborg G- GEl J>rnject 7286 D
wx Drilling break
.. Wflathered, ~*therlng k - Cocffiolonl of permeabtUty oi---l.__ I LOG OF llOIHNG ]If 1
T3rf'akfast Hill Umfl BORING LOCATION qrccnlond, Now flnmpshlro INCLINATION _ _ 4_0_'_ llf:ARING SCiOE DAn: START/FINISH _.;.!.TU!!!I!l:v...!9!J....!1L!!D:.!;7*;!_1_ _ / July 24 1971 CASING 1D ___a..Ill.. *~~-- CORE SIZE. 2*1/A ln. TOTAL DEPTH _ _::2c:..7:,l...:;O_ __:Tc::.l llRil*LP.D !1Y Amcrlron Ortlllng & Bnr!ng C'n,; 1\, All~n GROUND EL tMSL) ~ UI':PTH TO WATt:RIDATf: -2,1 ft / ,Jul\' 19 1974 LOGG Ell Tl \' Sol! - I(, !., Polk; fl""k - ,I, 11, IL1nn RATE C~~f~~ nrRQD STRIKE, Ill!'
l'RICSSURE TF:Sr SOIL AND ROCK Df:SCRIPT!ONS f = Fnllnt inn OF computed J Joint r'l"yPE", texture. mineraloJCYt AllY. l!E!ll k C ""Cont..1cL color, hardnNHIII, etc.}
mln/f 'i Graphic pRJ 10-lcm/sec !l; neddlng llm,o'r---,----r-~~-~-~-------~~-r--------~~<"~,,.~*-~~T-~-----------------------------------------------------------~
-¥-
10 -
-zo -
- ~n l-30 -
1-10 -
'10 F-In -
I-nn -
nnr.:
V7/
r.5 NX-1 ;,n 2, 7 30
"'""' m 1 ~mi .,:ram :-;ul>irt*! 10 slighl wx "-:. *'
/.:)
J)lahns(' and J.,.rnPI.;o.; lmul1lt*rs ( ' 1 )
l J i\forlrrelt:< wx nn(l par;c;;
777 thrnu~-thntll
-70 In rt*;Hfifv nn foHn! Inn .. '--'--' !'.> 0' np 01 rn<'K I'!] _
~ll~hl 7 NX-2 91 1. n mndrtalt> \\'X f'ot'<' dmtn~lf'rb:Nl !Jrag f<nc!><,, Bonllc*<l ll!!:hl om! mod*
XX-3 flf'l* 3, n
'Ill thrnulrhnul Minor hy rli'iks: l *'2" In 2 In lf>n~h~ "Tfnor l.nn rnlfling hun g;*:n. t'im*-,l!rainf'd,
!hinh* Inrnfnnif'rl, Fu-...NI din-V//;
vug~,.
ru!4B' !o)!aininl.:" nn
-*o ~
-~ ~llohl "'"
lolnl"* Nnl sHclwn- '-r*-r< '1-fl.!i' Cm\ltH'i hrold*n, Snl ... lkkt*n*drl<*rl..:
-2fl XX-4 100 .1, 0 \*uggy sidc>cl or poUsh~rl. ~::: Lt" "1.5 1 p~:;;;;~;* hr~;:;~. ~~{ ...;ilckC'tH;hlcrt 1
- I I -;_,
V7;;
r.. ~ MrlfiC'l"111<:' wx
(~Uitfl7.
~ Sl!~hl WlC Suhj('cl In "lhrhl t\"X :_* ' ~ t~tlart?.
- "90 !'lX -5 100 ~h 7 :1 :-\tn:ill I hrouJ,;hou! on folinli on _:... _. fln<*i"s*
lamlnalt*rl H"ndPflto thinfv -
22~
\\ pc-rvasln* vugq
('hnrAciPrl7.£<rllw JWr- , -- ~
vash-'t> sma n '-'11!-!s. -~ ~ ~rn**. l'hw ln li~ht and nwdhnn
\'t'l'\ Unl' throughout Pnrts nn fnUalfon al :_- _:._ ArainPd, lt*ttl ... paHli~* :with lm:*nt:
~
l/2" In t inlt*rval.o;~ qmut:tltlc* or C"ht*t*tv hamHng.
lY - PF-:!.\
rkfinHrh* not J\HI<*r\ t{uari-_
HO 1\'X-H 100 :!.4 32 C.nr(> <"Onlnln'l Y.it<*. l'rnhnhlv mt>lamorphnst*
-40 numl'rous qma l1 V\1,1:!<1 Fre~h fiYTHr-Fri'Hh inlt*rrndlv, hut xtnl'l
!10
!\'X-7 n' *1. 0 31 ->Uhj<'-CI In \'UJ4 flt*n*lnp mf'rtl ihrm!)!hmll, f\l;n llf' wx <>nlcflt.'.1 \ .Jotnl H<*f"<lnW'i tll<H"f' (pltl..;.flJilhk -
<!I 1111,. .-)* ~
a net parlfnl!s nr.:* no!
XX-' 100 li:l Sr-o.*prt\ wx
* 9 "ll{'kl'tHhlf'li.nr P*")t-
- . --~ '1119 ,
\'\1J..'l.{\'
~"X-9 !OO *l.lol' 52 1-.ln*d. , llrnlpn rnntocl Xm Pvrlle 121 l:pMot<' T*~re..;h anti hal*! I, 1 **nl\' 1 1* ~ t-IHniHlst.*. Fln1*-nwttltU1\
VI;
-IW l>.'J(-11 100 r,. 7 ~0 :\llnor vn~g-\' minnr !neal ...;nh!ll<m l ....,._ -
l"pitloh* <*fr<>t'l...:. ('tn~<'h 'i '
flialms~*. '\lt*llium-~r:thltorl.
iolnit~rl. .lotnl ;-; ~ r<' I do.t*k ~rar. ~la;.;slV<*. ~nmt*
- x-n o*
r},.'l nol <di<-h'n"'ftl*'fl or r;;
10Cal rwrplwrilk !t*xlun*.
13 poltshPII, '. "'mall phc-nncr\'"!~.
' i.
!<X-12 07 1. I :10
.:'l-\'1 N Standard Pf'OOtrntlnn " i"lnnCI', hi ouR *It Ur<* - lAmgth rt"CilV<*rt-d; length cnr<'d.
NO rf;~
SEABROOK STATION ltt~O- l.i*ngth of ,_ounrl <:ore 4 in. aml lon~"r.'lPnfllh con*d, l>llJ<!.I<' Sf;ll\'10; t*OMI'ANY <W NEI' llAMPSHIIIE i-
~-;
~ ~ - Spilt ttpoon llllantple I;rountlwntt-r YM;t\;:f: ATilM!C f:L~:CTiliC COMPANY tal tt - Hnri1Atur1W'd ARmp1N*
~ S - *"h*lhy hthc F- nxt*tl plslnn N - OPn!onn p - J'Hehrr 0 ~ OaW..-~tl( <: - ca:1 ProJect 7286 0 l>rtllln<< hrt*ak Wt 1 A:lhrrt>d~ wtlntht"rin~t k ~ Cn<*rflt*i~ni of rwnnrnhi11tv I i.on or nonn-m
Br..kfut IIIII flood BORING LOCATION ~~ llnm!l!!hlre INCLINATION -~-0_*_ _ !H:AIIING ~ DATESTAR*r/FINISH _ __.:!:*Tu:::.l.o:.v.:,:9*:...:.,lfi::_:7_;!4_ _ / Julv24, 1974 CASING ID --.&.3Jlln~o-_ _ CORE SIZE 2 -liA In TOTAL DEPTH _ _:ZC!.7,:.,l*c;:O_ _I!!..t DRILLED BY American llrUilng I< llorlng Co.; K, Allen GROUND EL IMSLt ~ DJ'!PTH TO WATER/DATE 2.1 rt / .rul:r 19, 1974 LOGGED BY Soli - K. 1.. P<>lk* llnck - J. ll. n,,nd EL. !!AMPLE RAT! C~~HJ.h. orRQD STRIKE, DIP PRESSURE TEST SOIL AND ROCK DESCRIPTIONS F ~Foliation MSL O..pthb'Type N OF t:ompuled J l:: Jntnt (Weather int. rlofectw, etc. ) (Type. texture. mlnt!fralogy, ond or ADV. ll!!!l k C
- ContAct color, h*rdne111a, etc.)
ft ft No. Rec. bln/f 't Graphic pol ln~4cm/oec 11 ~ lledding .
nn 0- ""*
CONTlNm:n I' 110M l'IIJ.:VIO 1: l'AG' t
[~ C"hipa C:ht*bts, ft'ld,.f)ttlhk, ..
~
Vuggv fienrrall\' frt"'"h loC"Sll_v quart1Hic~
NX-lr- 100 31 Quar!zlttc lntf'rnallv. Light ID tnt>tltum Rrav.
1!) j irrt"t,ru!ar gn!'l!\soslle. -
1 nrll!in<< <.;omp lm*n.l rnlnnr VUJ.'r LocAl!\' tot('.h(slnsC'~
j' ht'tlcr rl<"Vf'lnpmnnt. ,Joint" i : . .:: Qua:rt7.ftk Medium gra inerl.
t\ f.('$!\ v.~ and partin~~ nrt' nnl NX-lr 100 41 r
\~ o:;:tkken'>lded.
t:'"tM Falrlv frr<h *"* j:::" -** quar!z.os*
flecorr.P~ t1a rkPr gra \', -
1---:_'?
NX-17 62 7,!j nn('l" gra ln!'rl lrrcguJa r1 v
~omc minor local vug f'ollalcrl ;;;chtst, .
development.. Not feld*f'Aih!c, slJckensfd('d~
I?O NX-tA 9R 7,!; 51 F'alrlv ft*e;.~h Drag Folds: Schist, gnC'f.,.stc-V/1 Chips
,~ Vug,.zy 'iomt:> minor vu~ 1.rr t-t>x-~ " "' -... felrh;nnthlc Rl'l ahovr-~
1 ~~ria lerl jolnt tur~s. and powrl<'n' wx . . . . . .~ : Approximately 177., J' )lt"t'"ittmc- w*x _
NX-19 34 ~.o 12 l Not polished (*ffccls on inlnts and It ... , :.:-: contact~ r\ot silckC'nqldt!d.
VII 1 Rod* dropped parting'~* ,Joints art:'
-++',: 1 1;/;j
- -tAO "'X-20 100 :! Wx z.ont* 1' no! polished. fllah:t!>C!, Dnrk g-r:n*, _
J Pvrllo 1 m~ritum grained,
-1 ~lll!hl wx *t 1~ + f!ravH\' 11"1 finP )::(raln<Kt j
Sl!.-hl wx i...,. ;- ~ ~L~~~~I) ~t 1 lop anrl bottom,
- ~~f~~~* ~
I 1!lii, *I' I*'URt'd conlacf. 'flfr~*s paral.lt>t 20' I ~leep folnt * +' , !g ro1Jsltpn _
HRough surfacf' MC'tnqunrtzlif' to mt.'tn-
~; 1 -
I>'X-22 100 9,0 I 1 Vuggv . _;~ *:-- s:IH. rf'lrlspn!htc, fint*-
1 Chips Qtllf<' fresh int('ttmfh*~ ~rnlnf'd, chf'-rt\', mcdiun":
- . Minor vurrgv <\orne minor loca 1 vug '!tat". f1x"nlh* gn<'f~~k.
1 t C'X1Ut'(>H. :\linor sur- Bnndf'fl ic'<tUt't' of flm*- _
face wx nn iotnls. mt*tllum Hghl grat' I
.Joint!'! no! pnli!-thcd or , ~.::..*~ Drng FolriR (f'ld*qmthic cptortzHf:'
- f. sllcken.sldrd. wflh dark. A"ra\.', \'t*n*
r Minor vugg-v
- w" ftnf' ~r.ain(lr1 du*rt\' rock~
NX-2*1 100 Chips -. - t\..1:nt1ln~ I" con'lrnonh*
~~ VUJn.,'Y l*'n*-.h ami hard. ~mw *~, nra,.; Folds f'Y('O In '>IIJ,!hllv \\"0\'\'*
20" -
N'X-2:. 100 2. 0 4G \ Chlorlt~
I\ m'nor local \'Ui:!- rlc>v!*lofl .~ lh*comr~ somC>whal I men!. l\llnor *mrfacr j ~- --*: ...chistnsf', grccni"'h j.:::_:--..::.:_:-:~
t wx cffecl ~ on joint*>. !ln~w (lim(~ ~iHratc ... '!)
t-.'X-2fl 100 2,6 32 No JlOIIshlng nr ::-.
f-22
\ Sl!ght wx sUckenRirif!"l on lolnts. ~~ ':- 221. !'I Contact hrolwn. Xo! s1kktm.,idf<'71 f,'* ,-, Chill Dlahnst*, cal<::!!!£,
r NX-27 95 2,1 ~ t~~-~t- ~- medium ~rninP<!, <htrk
- + t ; gta,\"-. ~caltrrrd phf'no-
)*
Ft'e>f\h anri hard; drlll'l vcrv W!'ll. Onlv mlnor 'l+*r ,..
t, t
crvsl s.
Otahasc, calcilic.
medium ~raineci 1 darli I\'X-2R 100 2. 0 77 !. llowrl<'rV wx cff~ts on jotnls. No evtclcnct' of
- -j* 1 I"
+ r; ~~:r~na~ae~~6~n~~~h nc-
! mov<>mP:nl.
Chill valnlel<>.
t I
1 t- I
- 'I 2:19.9 Fu~t-d contat't. Dips! f)H" _
[*'rf'sh and hard; drill~
t-.'X-2. Fcld!tpathtc Quar!Zhf*, fint*. ln£>dlum W('lL. Onh* n*rv mfnor gravy "nm.:'\\'hal !Pici'i-4.9 II !!* powri('r\* *mrfa("t' wx cff('C"f!-1 on snmt* ioin1~
nRthl<
- fu:SNI eon-anti partinl.{'"l. Not lac! r-mpllihnlltt>C}>.
I/ j t<; ll<'kcno;:ldt'rl.
rJn<- gr.1ilwd* dark i-f.rt.*r.*h
~.,
cnlor. U~hl gn*~*n Mlrlln" lnmlnalC' nr<*
vt*r\' ~rl'l'itlllnr ln lt*x-
!urt*, ~mw l'll1f'Ht*
I Frr"h anr! hru*d; dl'lll"> \'dnin~. llnrtl ruck. -
wt*ll. No! "llt<>l..(*fl*,.Jdt*tl Hrc*tth" ;w,*n-.,..l!:rain, PI*'-2C
- (,t"l('nl .-.* m...... (lf fin**
II oh jnfrH:;.
- 1,7 i
~\t.nrltit**
~rldnt'll. mNihlfrt tlark
~>'X-:r 1~0 1 _.: *-
gta\' qunr11.fiC'~
271,1+--+-+-+-+- ---/ - - r------+---__:."~*"".f....-1f"'l+---------- ---- .:...'---11.-..----*---------.;:~
~.o T!OTT<lM N .. Standard penetration n""Ritttanee, blows/rt Reo - Length recovered/length cored, 'J.
NOTES SEABROOK STATION RQD - Length of sound core 4 ln. Mld longer/lengtll cored, 'l PUBLIC Sf:RVTCf. COMPANY 01' NEW HAMPSllliiE
§ S Split *poon . .mple ¥ Groundwater YANKF:F: ATOMIC ELECTRIC COMPANY
"' U - Undt*turbed *amplea
~ S - Shelby tube F- Fixed pleton N - Denloo.n l' - Pitcher 0- O.terberg G GEl f>.:tli'! AUCU'l'l 15 1914 Project 7286 D
wx
- Drilling break
- Wi?athered, weatherlnf(
- k - C(>(>frtclenl of
~nneahillty I LOG OF DORING PF-2
flr(I"Rkfa'll lUll Hood DArF: START/f'INISil -~-Jui!!l.LY.o.2fl:!J*c..1!;9!!.7:i.4_ _ / ,July ~0 1971 BORING LOCATION Qrecnlpml New He mpgh! rc INCLINATION ~ HEARING CASING !D _ _..;aulmn..___ CORf: SIZE _;2:;:_-1:.;:/.:.:e..!tne.:*'-- TOTAL OEPTII _.:,:f:,::tll.!.,OC---l!.fl Dllll.!.!:D I!Y ,\mcrloan llrl!llng & !loring Co. 1 K*. \lion GROUND E:I. IMSL) ~ Df:I'TII TO WATf:lliOATF. -2,4 rt ; .Juh* 29, l!l74 J..OC(iED flY ..:Oil- K, 1., Pnlk; Hf'ck- .}, H. Hand EL. SAMPLE RATF. SOIL AND ROCK DESCRIPTIONS (Weatht.'ring 1 rief<!'Clt'! 1 etc.\ fl)'~, texture, minPralog;.*,
MSL Depthl'l'ype N 0F and or ADV, aolnr, hardnPRR, etc.;
fl ft No. Reo. lmin/1 lflJ,Rr---,----r--~--~--~~------~h~O--~-------r-~<*~-<l~lnCC~*n~n*I~A,*-r,-------------------------------------------------------~
':' II 1-lo 1 40 20 -
1-ao -
f-.;o
- 20
!\'X-1 n~ .J,O ~n V/; 07' f.
Hust\'
W>:
OrWi!4s 1 nwtli11m lighl ~t'll\
mf'dium t'nar"r- grni1wd.
ljj;
'{ll~hl I no 70' r.:- Mlnnr rusl nrwi-..-.:~>1!\l:ll'tli!l',
mr:rti11,m (l'tl'l, J.!l'l'l'n, fitH'-
!\'X-2 1,1
- ...'\0 I
- lit<hl \\'){
lliYT'TOM OF I!Otllt;G Xol{': .Jninl" rmd ~~arrill~':o:
no! 'ili<'kt*n"lllptl nr polish!'!!,
1- -
f- ~ -
f*
I
~
1- 1- -
1-N - Strm!lnrtl fWnr*trl\thm rt'.<tHct:nuw. i1ln~J.*s * [f SEABROOK STATION Bt!C IA*njl;th r('C(}Vf'l'NL'l(*nt(lb l'nrf*d. : \\ \\'a ... ht*tllhrnu~:h .. nil fi*lll rr. ~*l l 1 l'ftLH' SEH\'H';.; t'OMPANV Of' NEW IIAMP.;:;nmf:
0Ql) J"*nS(th or I\OUnt1 t*orr 4 if\, 1\0d }OOI(f'r' h*n)!th J,'llT<<'d; e
'>Onqdc--. IA!*I'II~
g - SplH ftJlOUM ~suuplt' i (;rf)\tntl\\fltt*r \'ANKEf: AJ'flMIC ~:J.E!'fR!l' COMPANY
~ tl - llnrli1tturtw-<1 .'inmp)P~ -
L)
- ! S - Shr!hy tuhr F- f'ixud platnn N"' UN\ill*m P P!tct\Pr 0- O*terh<-rg (;- f;t;! 1I 1!171 ProJect 7286 I
.\IW1J>;.!
D - Drilling break k - (._'O(>ffiru:-nt of
- Wrathcr('d, weatht'ring pcrmt:>nhilll'f nf LOG Of' ROlliNG
1\ro*kfast 11111 Hood llEARING ~ DArE START/FINISH .rutv 30, 19H BORING LOCATFON Greenland New Ilqmpshlrc INCLINATION _ _,:!c~.l_'_
CASING !D _.....:Jawlll.n..__ _ CORE Sll':E _.:;.2_;-1:.;./_*..:;tn:;;._ _ TOTAL DEPTH _ _ _;::.204=*:.:.3"-R DRILLED BY American Ortlllng and flnrlng Co,: K. Allen GROUND EL rMSL) ~ DEPTII TO WATER/DATE fl/ .lulv 30, 1974 I.OGGEIJ BY Soli - K, [;, Polk: !lock * .1. ll, !l.*n<l STI!U<F:, DIP EL. SAMPLE RATF c':i~t~!h orRQD PRERSURE.TEST w~
SOIL AND ROC~ Dl'.'SCil!PT!ONS I
F
~: ~:~~~~~
to ;;j 8 iS tWea.thcring, defects, etc.) (Type, texture. mineralogy, cn1nr, hardnastt. etc. i II Rec. '1 Graphic P"' 10- em/ace 100 H11.A 1)
~
]0 -
- 41l
.... 20 -
1- *o 1- 40 -
- 20
~'\0 -
..... fl(\
- -~~
l-7o -
TOT> OF HO\K 1- ~0 VII "';; ~'~~ :~
NX-l 99 11 wx fre-.h UinbMi<'
-20 21 >ll~ht (ivn~"'r~tll,\'
Jnh*rnallv. -\uln('t!
l\'"-2 >10 nn
]0 r Chip" to :;Hght wx ntl ~ J>(*gnmtilc* <lnt*iJ.t!{* rpmrt><tli('.
7-:X-1 Ill ~
- Diah;u;c>
cimwtv-..;)):l('r*t! lnin!:.;, '-'mnf'what mntlir*rl lh:.hl r\X-1 Jon 0 II I I E \1mi<'r!\IC' .Joints ttntl parlin1;s ~ Jn nlNliUIH f.!l"H\ ~ II!)**~
~~~~;, 100 0
1- no
~
r
- o w.~
100 art* not }\ll{'kcnsi!lNi J.(Mtint:d rorl;. [Jll':llh l\flnnr vugJn~
or prllfsh('d. ('nr-P A"f('l*ni~h linc.r* 11i111<*
~
Chh1* ll;:1r!.. ).Crnv
~..-x. :- ]00 26 hn*<lh.A;o:tt <*lmn* : 1Utlf't1.ilf'
... nkah*-.L
¥ vuggy ~~~~.~
lnt<*rvnl~,
31
~~~~htiY
. .:..;~-:: (;nt-1-*"~. ,, 11 1 ~t-:*1 hi I'.
!:In -~ C:Nwmllv l:rl*:d\. lneulh h:ttlfli*tl. !I('
'~:-(-'{
_,;o ~ "\U~hi r;owdt*J"\' W'\
I..:::~_,-7. hM*
t*tlllH'"i ~11\<' hnl "'rhi~l~t.,i' VL NX-~ ]00 I I I rfll*t.*l, on ioin!l'l nnd ,~~thn:w, t'hill 1om:
- 7 I'U*Nl
~'X-1 wx K" ~lirkt"n-
~
SH~ht partin~s. .;:
l>fn.h:t:.it*, dtu*l, J.:.rll\
- Unr
.,.iller;: or pnlf "lwtf joints
~
ITX-ll 1flfl 26 ~lil(hl " l". tn nwdinm ;.tt-uint:d.
!).6
~,.
r;/;
I-ll r + ~ J>ht-r'tfl('t'\'SI~ \!,"(,
n,\1 t*akitk.
\"UJ.(~\';
'Hit{hl V."X Frt'~h. wllh .. liu,h1 *wx t*ff<*t*t .., lt){'itliY on +._ rot*k t~
ftt){'h. h mag-ncli!',
1>>'X-l 100 4.3 Jr. '""
[
rhl*,rlt(' iolnt;.:, SOIIH' -\Ulall ~
]00 1.2 Wl
! '{lf~hl WM \'\II.!" in t!l:th:l"'l' Wh(:'l"t'
~~~~~
1111.;1' Fn~!_!:!~IJ~~:!-
~
!'IX-1 ,,lwmwr\'1-lt"' llL.,~nl\*t*tl. J)Jal)!lSt'
-- ..r:-
12 ,...
<ll~hl t~O Nnt .. n,*t.<<>n"ll*h*!l nr nark Al"H\', t1Wtlium tJuUsiH'II. i'rlilr*w l!rainl'd 1 mol!l('tl
\'u~mv t t,.:!
lc*xtur~*,
cnkHit:,
- \l;lt!n(*lk 1 nnn-l:!.>..L..l:U:.CU .L:lllllacl. . UliU .<>llll:._
- t,n
~Li
!00 20 _
N\>l ('hlp~ l',*t*<ih :md h:lrd inil*r-n l )fin 7.11 ~
\'ul!~\* n:liiL Pal' I~ l':t"H\ nt'l
<)unrt?it1!' l,.'l)<'i"ls. 1hinh*
'>;'( !00
./-/.-, Chip~ 111 I :1.1' lollallun. m:1hint.: fn1*
h;mdrtf. ~.trt*elii"lh ling,<*
'* !i I. ]()O o.o -* 'I h!n I C'RIP-'-'i!it*i\t(' rn<-kl.
'Ill
'0 1 1HIH. Pari inc.; aml "illf{hl \\"X quar!t Fin('-J!l'ninf'tl. Hnnflin~
1ninl"i :lf'l' nnl .... lkk(*n-ton n.n hi!nflit'IJ..! :-,ou J.ll NX \'Uj!j..."\'
"!itktl or pnlf>.:ht'il, 1.:,. ~.n~nl In imlt* !lip
-7!l.~< (t'l ~:}7'\\', I,('l(":tllv ~nmt*~
whar \'UJ.!t.!'"*
N .. Standard penetration re1'!:l~tancc, bJowR/ft NOrBS
- 1) WA;.olwtl lhrnu,p:h o.;nH 0-*Hl rt. nn SEABROOK STATION Rec - Length rccnve red/lenglh CQrcd, 1
- ~;a mph*-> tak('n. P!'T\l.IC SERVICE COMPANY o~* NEW HAMPSHIRE RQD - Length of sound core 4 in. and longN*/lcngth coted 1 7 0 s - Spilt "poon &le i- Groundwater 2) No drill times available. YANKEP. ATOMIC EL~:CTR!C COMPANY 1:'i U Undisturbed oample* -
<.:> C!l~~~~~".-.~~
- l S - Shelby tube N- Dent*""
F- Fixed pl*ton P- Pilcher 0- O*terber~ G- OEf ProJ*ct 7286 D
W)C
- Drilling break
-Weathered, weattwring k - Cndficicnt nf pennPahihl)' l'AC:I-: __L_Uf ____....L_ I 1..00 OF HORIN<.i PV-'l\
J'\rraJ.;fa-.1 Hill Hmuf BORING LOCATION GrpcnJagd Ne" f!pmpshlre INCLINATION _____u:__ REARING~ DArE STARr /riNISil ...:_;_*l\~11'-!.v..:!~.::;O,c....:;ln:,.:7,::.4_ _ 1 Aup;H<! R, 197*1 CASINCO ID _ _... ,._....In,~-- CORE SlZE _ _:o'=-J..l.:!'SWiiJln_ _ TOTAL DEPTH 20-l 3 {t DRILLED Ir'i Amf'rtran Drllling tmd Borlng C'o-, t * AHt<n GROUND EL tMSL) --l.li.l..II..J Df.PTH TO WAT!:IVIlATt. {t I .rulr 30 1074 U>G\oED 11\' Snll - ~ I. Polk* Ho<'k - ,f n H.nN\
EL, SAMPLE RATE CONTE WATER nrRQO PR f:SSUI!F: rEST RTIHKE, lJ!P SOil. Mill ROCK DtHCRIPTIONH MSL N or )IT Computed F'; Follntlon J ;Joint
"'~ (Weatharin~:t. rldC'CtiJ, t*h~. l {Type, textur~, minf'rniofCY, D<pthl'l'ype and or ADV. = Contnc:t "'~
It II No. Rec. lmm!r 'J Graphic il!!l!.
p*l 10- "/oec C
n; Fleddln~ 8!:5 color, ltllrrlr\t"!4~, etc, I M q_ CONTINI!F.I1 VIH>M l'!lE\'10\l.~ PAGI*:
~~~-!, !Oil *.4 /// ~
cl !------ contact hrobcn rfll
~ll~hl \Ill(
A mphlholllc 1:>1. jl;l'Tk
<>ffrcfH
~~ gr('c>n, simllrtr In 2 lf1, ;;*
1NX*2 100 ~. R 20
] l~alrlv frf'sh tnt('rnallv Ff'ldspathlc in PF-2. Flne-vrain<'d, ._
r-1!1
!00 16.0 hul suhj{'ct lt\C':ll1y In
~ I neal! v ro!iatNI or sandcrl I 1/;
l\~-2 3 rock, {,.()Cal fL*lrl:spathtc i
- iUgh! tro mntlt'rAil' v.'X, '--
- ":
~1odC'Tilt<' WX f'!'ldspalhic gnd:-..-s, . nand.~ ar('
J
.1. 0 \t\11! dC'vt*l.;mnwnL NX-22 100
~
/;
,}oinb, :tnd parlin!:!~ !ransHional with amphi-1\"X-z. ]00 13,0
,,J 1>-..*rlte nol Allckt*th<hl<*d, bolit<'. Hock h; nol l'*lrl<r>alhlc 100 IR
- J Mod<'rOtc wx
- ~~ mat:mcUc.
cry1-1tah::
4,.
~
N'<-2* !00 2~
F<'1d5pathic All'lllhiholilt*, fial"'k ~-trC't*li, 1-.~-2~ 97 7, R 43 j Sllghl wx Falrh fn',;;h, "'iuhkd !£ ~A 1,1'\(':lll\'
.1 fhH'-~rninc>d, f'fff't'IS In slight \\'X t*fff'Pl~.
~~
17 fin<<' ll;;;ht gr<'('H 'i*inh*l" -
N'<-2C 100 'i.4 22 tl .joints and jl<lrtin~s arf' :nnt . ~llckl'l1sid<'li or :if'!lffi!o{, Lo<'al 1.1"lTll'S of gm.\' frld"pal hie or ur f!()l ishC"tl. l~uari1.ittc quart7.i1 il" J..'lWi;;s.
l!~-i- nark grN*n -
~X-2 97 11.2 36 Chips Frc*t:>h ancl h<i rd. lrwn Gn<*il's. u!t<-rnallng 1-1.(
12~
mlnnr v.:x C"fft'C'ie:, 1;,-~-,c;,: :~ JHart;.itic tav!'r-t of gr{'l*nish
\'Ugg\'
.Joint:- an* 1dannr nnd ic gnf'is:-\
~~Ji
~'X z;.: 100 3. ~ .12 ~~ rrvRtal grflwths Cjlll1l'l't,l! und gr<l\'
art* no! sli<'ki'nslfh:tJ Dark t_*Vrnl la\'f*t*ed quarl7itic 1///
?
~r("t'n or rmllsllC'ri, j!'rt('lss. crradatitma I rn NX-2! 100 n.o ~- y :~:; t:nntai'IB. Dark ~r<'t'fl tl; i
~llnor vum.;:v Dnrl;, grPl'fl rnck, looks llkt* arnphl- -
- - l<v<>nh*
Sh0w..; ;;nm<' int!'rna I hoiHr. ;..;o! maj.,'TH't h.*,
-~- f*)liat<'tf r&
lnlrlln~. Ft*irlsp;:llhi<* J.rn<"l>'s, !*inl,
~'X-:\1 100 *1. 9 49
- '"~ ~n'lss fehl1'll>>lr~. Strongh i' \mphthn~
nHlgnPUc.
l-111
~2!lt
- <rX-'11 IM 0, 9 fi2 l
L Minor yugJX\' Frr*sh * .roint~ nnd tmrlin~~ an* 1m1 lite f~ ~~:nt r'\~;~t{;lc*rl -
i ~~~1:~~jidC'd nr f--2"1. Ol' BOI!INO llOTTm1 t\nl<*: Cnntainl-\ mag~
1-f'l<'lilr C>nnN*ntratinnl't 20H,fl' In :WI.:l', -
Stron~l\' mllJ...'11elk.
eoAr:;;<' ff'l!lo;pnthic-S-,11i<'iS'"i, 1- -
Nnn:s N
nf't'
~ StJtniltu*tltu*n~~trnltnn t"f*RI~lrmc.'P*
l.t*n;_"th l"N'!t)Vr'f"f"d'lcnf(th COt"f'rl, rf h\n ... t:~ ,fl SEABROOK STATION RlJJ) - [A~nt..'th nf !'tounrl cnrt' *1 in, nnrllongf'~/lcn~::th t*nrPd, '. 1'1'1\1 tc SFIII'WI: CoMPANY OF N~:\1. IIA\li'Sillll!:
~ ~ - ~plit ~nQOn R-amPk* ... Groundwater YA:->1-,Fi' '\ l'<l'll!' t:I.EC I'HIC COMP.ANY
..,i!i U - tlnth<>turhed SRmple~
(1 mltad ~lnee~ ......_ ...
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- Wf"ntheruttt wentht"rin~ pt.;nncahititv nf
. ATTACHMENT NO. 3 PETROGRAPHY AND PRELIMINARY INTERPRETATION OF THREE SAMPLES OF DRILL CORE FROM THE PORTSMOUTH FAULT GREENLAND, NEW HAMPSHIRE Gene Simmons Dorothy A. Richter MASSACHUSETTS INSTITUTE OF TECHNOLOGY CAMBRIDGE, MASSACHUSETTS for WESTON GEOPHYSICAL RESEARCH, INC.
WESTBORO, MASSACHUSETTS
PETROGRAPHY AND PRELIMINARY INTERPRETATION OF THREE SAMPLES OF DRILL CORE FROM THE PORTSMOUTH FAULT, GREENLAND, NEW HAMPSHIRE Weston Geophvsical Research, Inc.
Post Office Box 306 Weston, Massachusetts 02193 Gene Simmons Dorothy Richter 26 August 1974
SUMMARY
In this report we describe three samoles of drill core from the vicinitv of the alleaed Portsmouth fault near Green-land, New Hampshire. The three samples are metamorphic rocks.
The pronounced laminations in sample PF-2A appear to be of primary depositional origin rather than of tectonic origin.
The peculiar arcuate structures common to both samples PF-2A and PF-2C are reminiscent of glass shards, which suggests that the rocks are totally recrystallized meta-tuffs or reworked volcanic detritus of different compositions. Sample PF-2B is a partially recrystallized basalt which is probably younger than the other two samples. All thr~e samples lack substantial preferred orientation of their minerals. Evidence for dynamic structural deformation, either recent or ancient, is entirely absent. In summary, we find no petrographic evidence that these three samples are associated with a fault. If a fault does exist in the region from which these samples were obtained, then either its deformation was not so pervasive as to affect these three samples, or else the deformation occurred before metamorphism and all petrographic evidence has been erased bv the last metamorPhic event.
PETROGRAPHY OF SAMPLE PF-2A 99.5-99.9' Name: Felsic metatuff Macroscopic Description This sample is a finely laminated schist. It is light grey in color and fine grained. Layers of alternating light and dark colors are probably due to segregation of mineral phases. Euhedral crystals of pyrite (- 1/2 rom) are abundant. The texture is punctuated by light col-ored augen and irregular 0.5 rom pores. This 5 inch core shows no veins, folds, and only a few large cracks.
Microscopic Description Texture The average grain size is less than 0.05 rom. Lamina-tions are the oroduct of the effect of variations in grain size, in the proportions'of quartz to mica, and the abundance of opaques. Micas tend to show a pre-ferred orientation of flakes at an angle of about 60° to the laminae. Most of the veinlet-like seams of quartz follow the foliation; although a few seams cross-cut the foliation they are not common and their margins have recrystallized to. blend with the rest of the rock.
The augen are pods of fine grained quartz. Some of the pores have minor amounts of weathering products around the rims.
A few large microcracks that are now completely healed were observed in the thin section. They are marked by
chlorite, quartz, and trains of discrete grains of opaques (probably pyrite). However, there is no other textural evidence of penetrative deformation.
The thin laminations and indications of flow structures imply that this sample is a recrystallized silicious tuff or reworked volcanic detritus.
Mineralogy Quartz is the most abundant mineral in the thin section.
It occurs in very fine (0.01-0.1 rnm) anhedral aggre-gates. The individual crystals appear strained and have sutured grain boundaries. Coarser grained quartz occurs in thin seams and pods which are generally parallel to the layering.
Muscovite occurs as small flakes between quartz grains.
It commonly shows a preferred orientation at about 60° to the layering. Muscovite rarely occurs in multigranular aggregates.
Chlorite occurs scattered through the matrix, in minor amounts in thin seams both with and without quartz, and in a few of the darker laminae in the sample. It is pale green, fibrous, and exhibits blue and brown inter-ference colors.
Opaque grains occur in thin, discontinuous layers in the sample. Some seem to be dendrites parallel to the layers, and others are small nodules. Many crystals can be seen in. hand specimens to occur as well formed
cubes.
Calcite and sphene occur in accessory amounts in some of the layers.
Estimated Modal Composition quartz 60%
muscovite 15%
chlorite 15%
others 10%
100%
PETROGRAPHY OF SAMPLE PF-2B 136-136.5' Name: Metabasalt Macroscopic Description This massive dark grey sample has a fine grained, uniform, phaneritic texture. Felty plagioclase crystals (1-2 rnm size) set in a dark groundmass are easily recognized with a hand lens. The plagioclase (Hardness 6) is evidently quite altered since it is readily pulverized by probing with a knife point (Hardness 5.5). In the black ground-mass biotite flakes are large enough to be seen. Pyrite is present as widely dispersed anhedral grains. There are no veins or major cracks visible in the core. A few open pores are present.
Microscopic Description Texture The thin section displays a primary intersertal texture which is partially masked by secondary minerals.
Plagioclase laths (0.5 rnm) form a mat with ferro-magnesian and secondary minerals filling the inter-stices. Cleavage cracks are not abundant. There is no evidence of healed cracks, no veinlets, and no other signs of structural disruption. Even the larger feld-spar crystals are remarkably free of all types of micro-cracks.
The absence of deformation structures in this rock in-dicates that no significant non-hydrostatic stress has
existed after the last metamorphic event. Hence, if a fault is present in the vicinity of this rock, stresses, if any, have been small since the time of last meta-morphism of the rock.
Mineralogy Plagioclase originally composed about 40% of the rock. It is now very highly altered to sericitic products. Most of the lath-like crystals have a turbid appearance, and are uniform 0.5 mm. There are a very few larger crystals which are now sericitized.
Clinopyroxene (probably augite) occurs as abundant round-ish grains 0.1 - 0.3 mm in diameter. The crystals have poor cleavage and weak zonation. The clinopyroxene is interpreted to be relict in this biotite grade meta-morphic assemblage.
Opaque grains are relatively abundant in thin section.
They commonly have square outlines, and occur in clumps with pyroxene and biotite.
Biotite occurs as subhedral crystals in the matrix. Basal sections are reddish brown while other orientations are pleochroic from yellowish brown to dark brown. The biotite is probably metamorphic in origin.
Chlorite is a common mineral in the matrix of this rock.
It is pale green and fibrous. There are a few ovoid mats of chlorite about 1 mm in diameter which may represent replaced olivine crystals.
Apatite is an accessory mineral in this sample. Euhedral crystals are minute but common.
Actinolite needles are dispersed through the section.
Incipient blue green actinolite also seems to be present in some chlorite mats.
Minor amounts of sphene and hematite are also present in the rock.
Estimated Modal Composition plagioclase 40%
(plagioclase
+ sericite) clinopyroxene 15%
opaque 10%
biotite 15%
chlorite 15%
apatite and 5%
accessories 100%
PETROGRAPHY OF SAMPLE PF-2C 262.0-262.4' Name: Fine Grained Amphibolite Macroscopic Descriptio~
This specimen is a very fine grained dark green rock.
The individual minerals are too small to identify with a hand lens. The .rock is massive and non-foliated. It is cut by a weblike network of calcite and quartz veinlets.
Small clots of pyrite are visible.
Microscopic Description Texture The sample displays a complex texture in thin section.
The average grain size is about 50 microns. There is no preferred orientation or systematic foliation although the constituent minerals are metamorphic.
There is a vague layering to the rock marked by arcuate clumps and thin layers of epidote and calcite.
Calcite-quartz veins which randomly crosscut the rock are partially recrystallized.
Mineralogy Amphibole (probably hornblende) and chlorite, in about equal proportions, are in the sample. The amphibole occurs as brownish green stubby, poorly formed crystals finely mixed with chlorite. The crystals are pleochroic from pale green to brownish green. There is no apparent preferred orientation of the grains.
Chlorite also a major phase in the rock. It is generally
pale bluish green and forms both platy mats and stringy aggregates.
Epidote occurs as minute granular crystals clustered in veins, in arcuate clumps, and scattered through the matrix.
Quartz forms spongy crystals in the matrix barely re-solvable at high magnification, and clear 0.1 mm crystals in veins.
Sphene is widely distributed as nodular aggregates and a few 0.1 mm subhedral crystals.
Apatite is present as accessory crystals.
Calcite is common in fine grained veins and in lesser amounts in the matrix.
Opaque grains are usually associated with veins and are not common in the matrix.
Estimated M.odal Composition amphibole 25%
chlorite 25%
epidote 20%
quartz 20%
calcite 5%
opaque sphene & 5%
apatite 100%
Photo 1. Sample PF-2A 99.5-99.9'. Felsic metatuff. Plane polarized light. Width of field 1.5 mm. The photo-micrograph shows the fine grained nature of the sam-ple. Roundish white spots are quartz which are ob-scured by muscovite and chlorite. The thin discon-tinuous laminae are composed of sphene, calcite, iron oxides, and chlorite. (The black circles are bubbles in the epoxy. )
Photo 2. Sample PF-2A 99.5-99.9'.
Felsic metatuff. Plane polarized light. Width of field 0.5 mm.
This photomicrograph is an en-larged view of the matrix and shows one of the few quartz vein-lets which crosscuts the laminae.
The thin, discontinuous laminae are composed of .sphene, calcite, iron oxides, and chlorite. In this view, the dark laminae are almost opaque because the indi-vidual grains are only about l-2p.
Photo 3. Sample PF-2B 136-136.5'. Metabasalt. Plane polarized light. Width of field 1.5 mm. This photo-micrograph shows the typical textures observed in this sample. The light grey dusty looking background is altered plagioclase. Ovoid darker grains are relict clinopyroxene. Note the abundance of black grains1 they are both opaque miner-als and iron-rich biotite.
See photo 4 for the details of the fabric.
Photo 4. Sample PF-2B 136-136.5'.
Metabasalt. Plane polarized light. Width of field 0.5 mm.
This photomicrograph shows the typical details of the fabric.
Note how pervasively altered the plagioclase is. Note also the hexagonal biotite plates; the euhedral form implies that the biotite is metamorphic.
Photo 5. Sample PF-2C 262-262.4'. Fine grained amphi-bolite. Plane polarized light. Width of field 1.5 mm. This photomicrograph
, s.hows a typical view of this sample. The fine light and medium grey crystals are in-tergrown amphibole and chlorite; the white grains are quartz; and the darkest aggre-gates are clusters of epidote-calcite-sphene. Note the abundant arcuate quartz and epidote shapes; these are all polygranular.
Photo 6. Sample PF-2C 262-262.4'*
Fine grained amphibolite. Plane polarized light. Width of field 0.5 mm. This photomicrograph shows the intimate amphibole-chlorite intergrowths, and a granu-lar epidote-sphene seam which arches across the field of view.
ATTACHMENT NO. 4 K-:-Ar AGE DETERMINATIONS OF SEVEN SAMPLES RELATED TO THE INFERRED PORTSMOUTH FAULT GEOCHRON LABORATORIES DIVISION KRUEGER ENTERPRISES, INC.
CAMBRIDGE, MASSACHUSETTS for WESTON, GEOPHYSICAL RESEARCH, INC.
WESTBORO, MASSACHUSETTS
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 8l.ACKSTONESTREET e CAMBRIDGE, MA5SACHUSETTS02139 e (617J 876-3691 20 August 1974 Richard J. Holt Heston Geophysical Res. Inc.
P.O. Box 550 l~estboro, MA 01581
Dear .t1r. Holt:
Enclosed are the analytical reports Mr. Rand requested. They are B-1236, B-1237 and B-1238 which were submitted for analyses on 20 January 1969.
Please forward these reports to ~1r. Rand and if we can be of any further assistance, please do not hesitate to contact us.
Sincerely, O~m~~~
Oerreth McS towe Office Manager SPECIALISTS IN GEOCHRONOLOGY & ISOTOPE GEOLOGY
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE 5TREET
- CAMBRIDGE. MA O:Zll9 * (617)-116-3691 POTASSIUM-ARGON AGE DETERNIN:*' ,cr: REPORT OF ANALYTICAL WORK Our Sample No. B-1236 Date Received: 20 January 1969 Your
Reference:
82 129.5 Date Reported:31 January 1969 Submitted by: Ed Levine Weston Geophysical Research Inc.
P.O. Box 364 Weston, MA Sample Description & Locality:
Newburyport quartz dioritet biotite-bearing phase, drill core 82, Seabrook, N.H.
Material Analyzed:
Biotite concentrate, -20/+100 mesh Ar 4o */K 4o = 0.0186 Argon Analyses:
Ar 40 *,ppm. Ar 40 *I Total Ar 40 Ave~ Ar 40 *,ppm.
0.1431 0.950 0 .. 1432 0.1432 0.953 Potassium Analyses:
%K Ave. %K k 441
,ppm
/.
6.295 6.3t}L /.693 6.316 Constants Ulotlld:
Xp=4.72x10 10
/year AGE"'
he 0.585x10- 10 /year K 40 /I< ::s: 1 .22 X 10 - 4 g./g.
Note: Ar 40
- refers to radiogen1c Ar ..1o.
M.Y. refers to millions of years.
- 24 Blackstooe Str*t. c.nrllal. Mal. lflt_..
Telephoaa. '11111NiN'idp "..,.1 REPORT Of ANAl YTfCAL WOfUC POTASSIUM-ARGON AGE DETERMINATIOti Our Sample No. B-iLil'T Date R80illfved: a ....,,......,, 11illlloillllflll Your
Reference:
a A ,. :late Reported: Jl J 1 J.Stff Submitted by:
llr. - . llottS
...............a.*.:~.J ** hi .... 1M...
Sample Description & LOC4Iftty:
11t..U Clft
- A,. *
~ ot t.~ae S.llu111* ** L
- ze * ......
Material Analyzed:
--~- .. .. **** -fo/41tl01J .... . . ~ - teo fU..
cnlaei - M OIIIIPJJ~Mb f!Ne ....,._, *t Clllflwe,
- a* VIIM 81
. . . . . biet1te-rlch gra!DII . . . ...... ~ 10-10' ,ll1tlfd.-.
Ar 40 */K 40 = 0.0159 AGE= $ (.,)
- Jll!l ,._..
Argon Analyses: /
Ar4o *, ppm. Ar 40
- / Total Ar 40 Ave. Ar 4 n *,ppm.
o.~ 0.891 O.o.\83 o.oUs o.evr Potassium Analyses:
L-
%K Ave. %K k 4 n. ppm s.. o:n a.~
Constants u.t:
AtJ = 4. 72 x 10 10 I year Ae = 0.585 x 10 **t 0 I year K 40 /K = 1 .22 X 10-4 g./g.
24 Blackstone Stree( Cambridge, Mass. 02139 Telephone TRowbridge 6-3691 REPORT OF ANALYTlCAL WQRI(
POTASSIUM-ARGON AO£ DiTERMtHATtON Our Sample No. 1...a.131 Date Received:* .,* *,,. Ult
- Your
Reference:
If JI.J' Date ReportedJ1J J 3961 Submitted by:
Material Ar 4o */K 4o = 0..0119 Argon Analyses:
Ar 4 0 *, ppm. Ar 40 *I Total Ar 41 ) Ave. Ar 411 *,ppm.
o.oe,k o.m 0.090Wt 0.91T O.ol51 o.oeoo (tlfllaw . - *~ - . - -a. 111 - *1-.Jete).
Potassium .~nalyses:
%K Ave. %K K 4o ,ppm Constants Used:
Ap = 4.72 x 10 10 I year x A r ~.:_~ + ' l
'J K 4o
~ = 0.585 x 10 10 I year K /K.::: 1.22 40 X 10 4 g./g.
Note: Ar 40
- refers to radiogenic Ar 40
- KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 2.4 BLACKSTONE STREET
- CAMBRIDGE, MASSACI-IUSETTS02139 * (617) 876.3691 19 August 1974 Richard J. Holt Weston Geophysical Res. Inc.
P.O. Box 550 vJes tboro, MA 01581
Dear Mr. Holt:
Enclosed are the analytical reports of the K-Ar age determinations on the seven (7) rock samples described in John Rand*s letter of 18 July 1974.
These samples were a little difficult to work with because of the type of materials, however we did the best we could with them. The measured K-Ar ages are about what I would expect for these rocks.
I will be away for a few days, but Ual Krueger will be here. I have dis-cussed these results with him, and he is quite familiar with the geology of the area in question and with the work *we did* for you in this area several years ago. He will be happy to discuss these results with you in greater detail if you care to give him a call.
In the meantime, I am enclosing our invoice for this. work. We look forward to serving you again in the near future.
Sincerely, R ch rd H. Reesman Genera 1 Manager dl.ftt.
RHR/dm nelc: 7 reports & invoice #4473 cc: J.R. Rand (letter)
SPECIALISTS IN GEOCHRONOLOGY&. ISOTOPE GEOLOGY
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-1176-3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. B-2882 Date Received: 22 July 1974 Your
Reference:
PF - Sl Date Reported: 16 August 1974 Submitted by: Richard J. Holt Weston Geophysical Res., Inc.
P.o. Box 550 Westboro, MA 01581 Sample Description & Locality: Kittery quartzite Towle Road, Hampton-Exeter Expressway Hampton, New Hampshire Material Analyzed: Chloritized biotite concentrate, -80/+200 mesh.
Ar 40
- /K 40 "" .01687 AGE= 268 + 10 M.Y.
Argon Analyses:
Ar 40 *, ppm. Ar 40 */ Total Ar 40 Ave. Ar 40 *,ppm.
.06717 .834 .06653
.06588 .862 Potassium Analyses:
%K Ave. %K K 4o ,ppm 3.224 3.233 3.944 3.242 Constants Used:
Afl 4.72x10- 10 /year Ae = 0.585 x 10 -t 0 I year K 40 /K = 1.22 X 10-4 g./g.
Note: Ar 40 *refers to radiogenic Ar 40
- M. Y. refers to millions of years.
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (6171-1176- 3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. A-2883 Date Received: 22 July 1974 Your
Reference:
PF - 52 Date Reported: 16 August 1974 Submitted by: Richard J. Holt Weston Geophysical Res., Inc.
P.o. Box 550 Westboro, MA 01581 Sample Description & Locality: Rye fm. feldspathic quartzite Winnicut Road, Route 151 North Hampton, New ~ampshire Material Analyzed: Amphibole' concentrate, -80/+200 mesh. Estimated composition:
95% gray-black amphibole, 5% adhering groundmass.
Ar 40
- /K 40 = .01960 AGE= 308 + 14 M.Y.
Argon Analyses:
Ar 40 *,ppm. Ar 40 */ Total Ar 40 Ave. Ar 40 *,ppm.
.01794 .674 .Oi773
.01752 .668 Potassium Analyses:
%K Ave. %K K4o ,ppm
- 752 .741 .. 904
.731 Constants Used:
AJ3 4.72x10- 10 /year Ae = 0,585 x 10- 1 0 I year K 40 /K = 1.22 X 10-4 g./g.
Note: Ar 40 *refers to radiogenic Ar 40
- M. Y. refers to millions of years.
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617) 1176 3691 POiASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. M-2884 Date Received: 22 July 1974 Your
Reference:
PF - S3 Date Reported: 16 August 1974 Submitted by: Richard J. Holt Weston Geophysical Research Inc.
P.o. Box 550 Westboro, MA 01581 Sample Description & Locality: Rye fm. feldspathic gneiss Route 1 Bypass, Lafayette Road Portsmouth, New Hampshire Material Analyzed: Muscovite concentrate, -80/+200 mesh. Estimated composition:
90% msucovite, 5% biotite, 5% quartz and feldspar.
Ar 40
- /K 40 = .01864 AGE= 294 +/- 10 M.Y.
Argon Analyses:
Ar 4 0 *,ppm. Ave. Ar 40 *, ppm.
.1522 .852 .1500
.1478 .782 Potassium Analyses:
%K Ave. %K 6.563 6.597 6.631 Constants Used:
AGE
" + .,.
In ~--1\-e x- Ar- "
4 o- + 1]
Ap=4.72x10 10
/year [
Ae + 'A~ 'Ae K 4o Ae = 0.585 x 10- 1 0 I year K 40 /K = 1.22 X 10-4 g./g.
Note: Ar 40
- refers to radiogenic Ar 40
- M.Y. refers to millions of years.
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617) lil6-3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. M-2885 Date Received: 22 July 1974 Your
Reference:
PF - 54 Date Reported: 16 August 1974 Submitted by: Richard J. Holt Weston Geophysical Res., Inc.
P.o. Box 550 Westboro, MA 01581 Sample Description & Locality: Rye fm. feldspathic quartzite Route 1 Bypass, Greenleaf Road Portsmouth, New Hampshire Material Analyzed: Concentrate of fine-grained mica-quartz aggregates, -80/+200 mesh.
Ar 40
- IK 40 = .01645 AGE= 262 + 11 M.Y.
Argon Analyses:
Ar 4 0 *,ppm. Ar 40 *I Total Ar 40 Ave. Ar 40 *,ppm .
.02042 .625
- 02046
.02049 .645 Potassium Analyses:
%K Ave. %K K 4o ,ppm 1.015 1.019 1.243 1.023 Constants Used:
Af3 = 4.72 x 10-to I year Ae = 0.585 x 10- 10 I year K 40 /K = 1.22 X 10-4 g./g.
Note: Ar 40
- refers to radiogenic Ar 4 n.
M. Y. refers to millions of years.
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-f176.J691 POiASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. A-2886 Date Received: 22 July 1974 Your
Reference:
SRF - 51 Date Reported: 16 August 1974 Submitted by: Richard J. Holt Weston Geophysical Res., Inc.
P.o. Box 550 Westboro, MA 01581 Sample Description & Locality: Diorite Scotland Road, Interstate 95 Newbury, Massachusetts Material Analyzed: Amphibole concentrate~ -80/+200 mesh. Estimated composition:
85% amphibole, 10% biotite, 5% chlorite.
Ar 40
- /K 40 = .02764 AGE= 422 + 17 M.Y.
Argon Analyses:
Ar 40 *,ppm. Ave. Ar 40 *, ppm .
.03714 .807
- 03892
.04070 .389 Potassium Analyses:
%K Ave. %K K 40 ,ppm 1 .. 154 1.154 1.407 1.154 Constants Used:
AGE= ln~A.{j+A.e xAr40*+1]
Afl 4.72x10- 10 /year
"-e + A~ L "-e
- K 40
""-e = 0.585 x 10 -I 0 I year K 40 /K = 1.22 x w-4 g./g.
Note: Ar 40 *refers to radiogenic Ar 40 .
M. Y. refers to millions of years.
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-876-3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. A-2887 Date Received: 22 July 1974 Your
Reference:
SRF - S2 Date Reported: 16 August 1974 Submitted by: Richard J. Holt Weston Geophysical Res., Inc.
P.O. Box 550 Westboro, MA 01581 Sample Description & Locality: Schist Highfield Road, Abandoned RR grade Newbury, Massachusetts Material Analyzed: Chlorite - amphibole concentrate, -80/+200 mesh. Estimated composition: 40% amphibole, 60% chlorite.
Ar 40
- /K 40 = .01932 AGE= 304 +/- 15 M.Y.
Argon Analyses:
Ar 4 0 *, ppm.
.01162 .381 .01149
.01136 .548 Potassium Analyses:
%K Ave. %K K 4o ,ppm
.492 .487 .594
.483 Constants Used:
AIJ = 4.72 x 10 -J 0 I year Ae = 0.585 x 10 10 I year K 40
/K = 1.22 X 10- 4 g./g.
Note: Ar 40
- refers to radiogenic Ar 40
- M.Y. refers to millions of years.
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)- 876-3691 POTASSIUM-ARGON AGE DETERMINATION REPORT OF ANALYTICAL WORK Our Sample No. B-2888 Date Received: 22 July 1974 Your
Reference:
SRF - S3 Date Reported: 16 August 1974 Submitted by: Richard J. Holt Weston Geophysical Res., Inc.
P.O. Box 550 Westboro, MA 01581 Sample Description & Locality: Newburyport granodiorite Parker Street, Little River area Newburyport, Massachusetts Material Analyzed: Chlorite-biotite concentrate, -80/+200 mesh. Estimated composition: 70% chloritized biotite, 30% quartz.
Ar 40
- /K 40 = .01860 AGE= 294 + 20 M.Y.
Argon Analyses:
Ar 4 0 *, ppm. Ar 40 */ Total Ar 40 Ave. Ar 40 *,ppm .
.005765 .325
- 005548
.005330 .370 Potassium Analyses:
%K Ave. %K K 4o ,ppm
.245 .244 .298
.244 Constants Used:
Xf3 = 4.72 x 10- 10 I year Ae = 0.585 x 10 -t 0 I year K 40 /K = 1.22 X 10-4 g./g.
Note: Ar 40
- refers to radiogenic Ar 40
- M.V. refers to millions of years.