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.
I.
II.
III.
IV.
SCOTLAND ROAD FAULT INVESTIGATIONS CONTENTS LOCATION OF FAULT INVESTIGATIONS INVESTIGATION PROCEDURES A.
Preliminary - General Area B.
Final - Property of Marion H. Marshall Estate 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 CONCLUSIONS References
Figure 1 Figure 2 Plate 1 Plate 2 Plate 3 Plate 4 Location Map - Regional Fault Investigations Location Map -
~cotland Road Fault Investigations Site Plan - Sub-Surface Investigation Geologic Map - Scotland Road Fault Geologic Profile - Scotland Road Fault 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:
11The 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 A 11 ) 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 118 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 211 ), 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 I the subcrop of the footwall of the fault is interpreted to strike 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 1 to March 4, 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 1 near the north edge of the fault zone, was excavated on 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 11a 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 I 500 years ago".
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 SRF-lA SRF-2A SRF-2B SRF-3A SRF-4A SRF-5A SRF-5B SRF-7A Boring SRF-1 SRF-2 SRF-2 SRF-3 SRF-4 SRF-5 SRF-5 SRF-7 Depth (feet) 74.0 to 74.4 60.0 to 60.4 72.9 to 73.4 67.0 to 67.5 92.9 to 93.3 42.1 to 42.6 175.1 to 175.6 115.9 to 116.4 Description Amphibolite breccia Mylonized quartz-muscovite schist Brecciated quartz-muscovite schist Muscovite mylonite Chlorite augen gneiss Sheared granodiortie Altered olivine basalt 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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GEOLOGIC MAP -SCOTLAND ROAD FAULT on property of MARION H. MARSHALL
£STAT£ NEWBURY, MASSACHUSETTS for PUBLIC SERVICE COMPANY OF NEW HAMPSIIIR£ by John R.Rand Consulting Geologist 6 -13*74 SRF-1 o STUCTURE CONTOURS ESTIMATED FOR A LAMINATED SANDY SILT BED WHICH OVERLIES THE FAULT TRACE Diamond Drill Hole Strike d Dip of Bedrock Foliation Averaged from Oriented Drill Core Strike d Dip of Bedding mapped i!l Surficial Clays and Silts
I SE
- 50' t~
a*
- 50' Hoo*
- 150' 200' 248 my' K*Af *go, million YHfl I SRF*IIA
- Drill cot~ umple I
SCOTLAND ROAD FAULT ZONE - -
.NW
-P[Arl!:-;f I
~EIJIIOCK 1
'?
'?
~
I I
WOODED ARE" a:
a:
a:
II)
II)
II)
I I
Clay 7
/
,~... ~~~--... _ -.. -~~,...*~
.. ----"-~--
--~------~--
ASSIMED MeAN SEA LEVE~
- .......,~;..
z
_L.----*
- 1.........
- , -ilfsJ'Y Sand~ Variab(<<
T~xturu
_______ _[ _________
-.,':~~---- ---256-;r=
~-.:..
'/SRF*34
':-Siff*iA..
- ifti'f/JJA't'Eil"ii£61ifXK SCI/I~
SRF*2A
-269my
'\\
- "~. -uv-*
32t.my SRF*t.A
~0
'~
Unnam*d Diorite and Schist
..t-.0
,_SRF*58 Newburyport Granodiorit*
~
199my
~~
-2t.Bmy (dike)' '
q<: ~RF*SA NO APPARENT AI..TERATI<>N
- ~*-.. -*
MOD&RATE DEFORMATION INTERMITTENT LOCAL DEFORMATION rr 50' 0
?
0 0
~
0 GEOLOGIC PROFILE -SCOTLAND ROAD FAULT PU!ILIC SERVICE COMPANY OF NEW H,O.MP:SHIRE lPUTE al an prornrty of by MARION H. MARSHALL ESTATE John R. Rand. conoulling Goologlrt NEV(CIURY, MASSACHUSETTS B
L*ytrlng In el*y D
Silly *l*Y jA, a.c. I:IC.
- t..mln*t*d S..dy Iiiii Markor HorirM I SURFICIAL DEPOSITS AND TRENCHES SE f;~;~:J Fino *lily und f:;:~.;;*:,~.~J Fm* to mtdium und If.;.. :;?, ~:J Mldlum to CiNr** und h*t~*~*::l 6FdVfl
~
Bouldff&
~ \\
r:;::._~r=-_.;.
... ----..L---.. -.. ~-.. -.--.-.-""~~~~::::::::::::~:::::::r_o_**_o_*c:::::::::;rl 1o* ~
.. £_........
TRENCH 4 WEST WAL.L No Appar~nt Allot* tiM du* to SCotl.wl Ro.td F*ull OVff tht SCOTLAND ROAD FAULT ZONE M/JI'Oportyo/
MARION H. MARSHALL E.'STATE IIE.'W8UIIV. MASSACHUSE.'TTS lor PU8LIC SE.'RVICE COMPANY OF NE"W HAMPSHIRE by John R. R*nd Con*ulllng Goo/ogi*t
~*13*74 I PLATE' I NW CE Modflr4ft Dtformetion SO'
ATTACHMENT No. 1 SEISMIC REFRACTION. SURVEY SCOTLAND ROAD FAULT ZONE NEWBURY, MASSACHUSETTS 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
INTRODUCTION SEISMIC REFRACTION SURVEY SCOTLAND ROAD FAULT ZONE NEWBURY, MASSACHUSETTS 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
10+-0 ELi-50 9+0 e*o 2000 :!:..FT./SEC.
SRF-$
17,000 t FT. !SEC.
16,500-18,000 FT./SEC.
<E.- -- INTERMITTENT I..OCAL DEFORMATION 0
100 1
NEWBURYPORT OUTCROPS §J d) c:9~10+0 WOODED 0 ** Cl 0 * \\
~
\\
".+
\\
500' LI~E A 7+0 6+0' 5+0 4+0 3+0 2+0 SRF-7 SRF-'3 2000!FT./SEC.
SRF-8 SRF-2 SRF-9 SRF*6 SRF'!'4 4800 -5000'"FT./SEC.
15,000-16,000 FT./SEC/
/
15.500 Fl./SEC.
/
/
15,000 FT./SEC.
0.~"-fo/"
14.500 FT./SEC.
/
- 7.
SCOTLAND ROA9VFAULT ZONE
~~
MOOI;RATE DEFORMATJON
/'
- INTENSE OEFO~ 1ATION #
NO APPARANT 'DEFORMATION -- -
- ~
1+0 O+O 4800-5!000 FT./SEC.
!0' SCAI..ES o*
SEISMIC REFRACTION SURVEY SCO.TLAND ROAD FAULT AREA NEWBURY, MASSACHUSETTS for Et...+50 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 EL.
SAMPLE ROAF._ ~~
~~~ff'kT~; STIHKE, DIP
!!1 BOIL AND ROCK DESCRIPTIONS MSL Depth 1'ype N
J :J~~:
11"" lij <
(Weathering, defeote, etc.)
f'l'ype, 18x1ure, mineralogy, and or ADV.
C*Con.taot 8!
oolor,haf'dnt\\S!!I,etc.)
fl ft No.
Reo, ~ln/f Graph(
-4/Zicm~/*!!!*~*~..:B:.";;.,:;B;*dd:::,:ln::!g~~..;-;;.... ______________________________..j 8, 1
--~~--~~s~=~S~Il~o~ke~n~*~ld4e~-n~~~~~~~~~~~~~~~~-r~~~~~~~~~~~~~~
1~
5
.1 7
1;!"
9 TOP OF CLAY L;;'""'"" gray, ?liVe-gray, MO orowl\\ smy cay, Low p """';.',',!;w>l',,.,, : *u!!*:l,""'.(' !!.'
0
-20
-40
-60 r11~tlb mottled graf &cllve brown silty clay, Low lo mod. plasticity. * (lor) "'ItY tsf 93 21 32.3 F-
~:;~l~rt~~:~~~. a5
~:*
8 L~:r:o> ~~~~:':; plnsttolty; w > P. L. *ultor) > u 1. 0 tsf
~~
~~
=~:!
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 57 S
- 37. B Similar to Sample 53, but medium otlff: oontafoo a gray silt layer< o.s mm thick; color varies sHghtly ol!ve-brown to olive-gray.
- u 1
"rt_o.-.r)'-~-o *._3._4_t_*_f --------4 13,0 F-
[ SB
()
l-20 ( S9 9
( 8!0 10 30f Sll 9/6" Sll{.\\
19
( S12
- !4 i=-4or 813 26
[ 814 31 j:..so ( 815 17 m.o 816A 59 816B 10/6" J:.oo ~ Sl7A 79 S17B 28/6"
[!!IRru 92/6" lttA NX-3 93 TOP OF SAND TOP OF TILL
- 3. 0 TOP OF ROCK 4.2 43
~~I:~ ~f~~ITl :l~~ty~~:~;"~o~l~~~nn::iu:'.:'J~~<t. s~~.~~~~*o~-TO'~~:*~r~~~ !'~"."i~lse u
Grsy silty fine *and. UntfoTm: fines are nonpla*tto; very faat reaction to ahak!ng teet.-
Similar to Sample S9, but also contains a few gmy clay layet's 1-2 mm thick.
Similar to Sample 89, but also contain* some graY clay layers.
Brown sllty fine eand. Unlfonn; fines-a.re nonplaattc; contalne a few ruaty-brown fine sand la.yers.
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.
Brown very sllfl"htly ollty uniform fine to medium aand.
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.
Similar to Sample 814.
Similar tn Sample SH.
~;~~-~:o:~ s 1
~t!
1
- .:~1fn::O:~i.no:;~~~~c~raded; angu ar grains; contains gravel p1eoea 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 fragmenttr up to 30 mm ln size.
~~lc:~~*tgrf:~~~~ Cl~~~~~~d, Unlformi fines are n<mplastie; contains angular gr.avel Cored boulders,
- 7ft' Joint Fresh and hard. Dr!lls
~*.-*.,o* Diorite. Dark gray with large l?lhorn-
' 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
~0
~
- 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 4--4--+--+-~I---.....J4-~I----+-----..j;.-+J.;.*
- M:.::I":::":.:r..:w::.:x:..,... ___________
...l!,.*~* -r* : Diorite. Massive, fine-grntned,dk. graji -
BOTTOM OF BORING F-1-
1-N
-Standard penotr&tiO<<< r-eolalanoe, blowo/ft NOTES Roo - Llmsth NO<>Vel'<ld/lellsth cored, %
1)- * (lor)
- Sllear *tren(!th measured SEABROOK STATION PUBLIC SERVICE COMPANY OF NEW HAMPIIHRI.E RQD - l.ensth of IOW>d core <l ln. a~~d lonrer/l011fllh corod, II.
u with Torvano, 9 8
- Split lp<l<)ll umple i GrouDdwat.or
~ U
- Ull<ll.tbu*bed *amplot YANKEE ATOMIC ELECTRIC COMPANY r.* miiBdlll-118818.--....
'-l 8
- Shelby blb;o N - Deai&OG F-Flied pl.al<lll p - Pilcher
...,................. ~~
0 - Olt.orbotr&
G - GEl D
- Drtlll!IC brnk k - Ceeffloloftt of wx
- w.. lharett, ""atherlol penneablllty SJ!f!
J LOG OF BORING of PAGE
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 Sot1 - K Pofk* Rqck.r R R@d LOGGED BY GROUND EL (MSL)...J..l..L....!
DEPTH TO WATER/DATE Q,O ft /
Deo, 31, 1973 EL.
0 'MP' ~
RAT"* IT erRQD PRESSURE TEST STRIKE, DIP
=
SOIL AND ROCK DESCRIPTIONS MSL ~
OF
<Oomputeo r:r~~~tlon !:J <
fW.. therlng, defectll, ~.)
('t'ype, texture, mineralogy,
- ADV, KP!!!.
k C
- Contact 8 [il color, hardn~*** eto,)
lt mm/f Graphic pal 10""~om/oec B ~Bedding Ill r-ll~~~~~~==~~~::::::::Jlo:o::~::~~::+:]s~-t*~s'~'c~kf*n:*:':d*~~
17.8 1:
l
!1' rov-
~~
i~
54 24 S5 13 30,1 33.8 35.6 t/ c~~~':"1~~ ~~ :'n"!'d!u~~fa~t;~ltr: ~;r~. t~ :;rn~~;)'$.~*.8ul~'}" 2)
- 8 Similar to Sample S3, but fewer brown epot.; gray streaks to lfmm. *uflor)> 1. 0 ts!
SlmHar to S3tbut fewer brown Apots;rnore gray 8treak~t;somewhat softer. s (tor)~.90tat:
Olive-brown *Illy clay. Low to medium plasticity. *uitor)
- 0, 50 tst u
Similar to 86, but no dark brown spots; soft to medium atJ[f; a lightly at!cky.
- u (tor) = 0. 23-0.30 taf 0
-20
-40
-60 10 S6 87 r ss
~0[ S9
~4.0( 810
... 30 ( 811
[ Sl2 t-40 [ Sl3
[ 814
-50 NX-1 i'll.S N'X-2
-so NX-3 BX-4
-70 BX-5 llX-6
- ns t-5 5
10 13
- 4) 100 100 100 4.7 100 2.6 100 2,0 35.5 49.5 52,5 37,8 32 23 67 55 100
~
~
N Standard penetrat!oa """i*tance, blowo/lt Reo
- Llmatl> 1'0oovered/leJl!ilh cored, 'I>
TOP OF SAND TOP OF ROCK 52° 49° 53° 41io s5*
46° 4i' 40° 42° BOTTOM OF BORING NOTES Gray to olive-gray silty clay. Vary soft to soft: medium to high plasticity; slightly "et!cky. *ultor) = 0.15 tsf Similar to Sample S8. *u (tor) n 0.18 to!
Gray ver;y silty fine sand. Uniform; fines are rJenerally nonplasuc*, but contains a few gray clay pockets up to 8 mm In size
- Similar to Sample B!O.
Gray-brown ffne to medium sand~ Unifo't"tn; subrounded grains; clean.
Light gray rlne sand. Uniform; clenn; contains one 8 mm size aubrounded p:leoe gravel Similar to Sample 813.
'\\'.\\,-.:
"No sl!okeno!des Not notnhly wx. Altered
~'\\jo,-
Catacla8tlc rook, Mottled light by metamorphic procesB "::):'. ~!"
yellowish gre~n., flne-grained to light yollow green
.'\\).. \\,.
matrix. Foliated with rounded oolor. Not allekeno!dod,:}: *~).
P<>hblo-llke breco!a, nnd sworleJl
,~',.'
feldsp*thlc IUld chlorlt!c foli-jso* Joint Frcah. Drills well. Part \\
"':'~'
allons. Thin !eldopathlc etr!ng-
' Minor rusty lngs and aomc high-angl >r:,,.,..,
er: and irregular veinlets dip Joints ahow crusty our- '\\.:::'
35 to 4o" opP<>BI'> to dip or fol!-
faca wx effect
-;...* ~': \\
aUon.
Cross-t~trlngen.
enaideR or other recent
~*
- .(' Cross-rfnted m ovcments.
- A: atrtnge:rs trto<l
~/.:"'\\
SEABROOK STATION RQD-Lon,U. ol aOWid co~e 4 Ill. and longer/len,U. coNd, '1.
~ ll
- Split II>OOD oample J Gl'<>!mdwat..r
- 1) Cored two bouldero from 41.5 II to 50.5 ft.
PUBLIC SEIWICE COMPANY OF NEW HAMPSHmE YANKEE ATOMfC ELECTRIC COMPANY ll!fllu'IIIBd 111111118818 *...-........~
_ U
- Uudllturbed sample*
§ S
- Shelby tube N
- DoniiOCI F-Fixed pU.!Oll P - PIU!Iu!r o-Ooterberg G-GEl D
- Drllltn1 i>N!ak k - Coefttolent o/
- We&lllered, wealher!Jli penneabtllty
- 2) *u(tor) ~Shear stNngth maaoured with Tornne
- 3) SlA ~H6,2, S1B*3L7
- 4) Rate of advance not available lor NX*l through 3.
~---*-~~
Date:
January 10, 1974 Project 7281 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 EL.
SAMPLE RATE a11d or
- ADV, MSL Deptl>nl'l)pe N
OF It ft No.
Rec, ~In/!
0\\j~i~::.r or RQD PRESSUII E TEST Compute~
Sl!!!!.
-!k Graphic pot 10 om/aee STRIKE, DIP F
- Foliation J
~Joint C =Contact B = Bedding SOIL AND ROCK DESCRIPTIONS tweolberlng, defect.,, ete. J (Type, texture, mineralogy, oolor. hardneas, eto.)
!7.9 4
.v.v
~2 19 29.1 i-S3 33 27.8 S4 9
36.3 It 1
37.7
~
45.0 r-1o 43,S 2/6" 51.9 (sa 2
55.4 0
- -'2° [ 89 3
50.9
[ 510 2
36.3
~o L Sll 16
[ 12 8
-20 38,0 f:-!o
~;a
!... ~:..
42
~
~X-1 97 3,0 43
~0 I'X-2 97 3.2 47
~X-3 100 4.0 77
-40 I
1:-;;o
~X-4
]00 3.8 87 NX-5
]00 4.2 75
- -ro NX-6 100 4.0 82
[NQ-7 100 68
-60
!;Q-8 100
- 3) 52
~
E-eo
'NQ-9 95 61
~Q-10 100 72 t1
~
~0
~Q-11 100 63 95
~
N
- Standard penetratloa re1 lotanoe, blows/ft Reo - Lenglh...,covered/l*nath cored, %
~*
S=
TOP OF SAND TOP OF TILL TOP OF ROCK
- 2)
NoQ};, 3ANW !*'
N83W, 46NE J N89E, SJNW F t!BS~: U>>~ ~
MRgw, ~9J'i.:~ J tl~~~; li~l ~
~A~~~ 4NE f, BOTTOM OF BORING NOTES Similar to Snmplo S7A. "u(tor) = 0.12 tsf.
Stmll*rto Sample S7A. s (tor)
- 0,15-0,19 taf u
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 Grny layered soft stlt,y clay and silty fine &9,lld. Layere nre 1-5 rnm thick.
45: jofnt.. roety FA.[rly fresh (as for wx}
~~
'}";. ~
r:.::uf~~"!x but is altcrt'd, presurn-
- ~ ~
ably hydrothermally, to
~'
Vuggy a Hght gray-green to tan ~Tan Altered diorite I?). Fine-grained, light gray-green matrix wlth medium-grained feldspar phenocrysts. Sonse-of vague foilatton thl'Ollgbout.
io"joint green oo]or. Joints show.,;._;:,..,!diabase sllght rusty wx cff~cta.
, ~-~... ~
"~:
Rough Driller ground
\\ '::i...t Quartz-Fresh, buf n:lferod hydro " "} Pink feldspar 61. fi' thermally lo li~hl green-
~..:_. Epidote Faull hlock ( ?) Fusod, tight 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 f *" :.,: Epidote
'J
~~!g?p~hi<cd light grzy to
.~
':\\:-~>-
Altered diorite r?). Moder-Frcsh, lrut altcro<l hydto '~'i:j atcty foliated, sauasur!tized
!berm ally. ()uart?./pyrlt ~ :{', j feldspar phenocrysts tn ftne-minernllullon conforms,';-
~**Pyrite grained matrix. Appea.N to_
to foliation. Joints are 1>::._ 'S",
be moderately follaled New-Gl"Join!
not sliokenaidcd.
I'>~'
buryport Diorite.
Rough surfuoe
,-. }
Fairly fresh, but altered.~~'\\,,
Jointfl not slickensided o polished.
~~') i
&:~"<..,**
SEABROOK STATION RQD - Lenglh o! aOW>d core 4 ln. ed looger/leoglh corod, %
- 1) *uttor) = ~::~:~:.~.h measured PUBLIC SERVICE COMPANY OF MEW KAMPSHmE YANKEE ATOMIC ELECTRIC COMPANY fl'..fl U'llt.Bd anghaa *...__
§! S
- Split opooo nmple J GrOW>dwater l'ol U
- UDdiJiturbod oampleo
§ S - Shelby tube N - Deol"""
F-Fixed pfol<lo P - Pitcher o-Ooterbors G-GEl D
Drilling break k - Coo!floient of
- Weolllered, weathering penneablllty
- 2) This !s only a partial !let of d!p and strike data.
31 Rate of advance not available for NQ-8 through NQ*ll.
- Used 300 lb homm.er.
~.
........,.....,.. ~~
Date:
February 13, 19?4 Project ?288 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~~~~~~~
BATE WATER or.
PRESSURE TEST STRIKE, DIP EL.
SAMPLE 0 F
<;om puled r :
r~:~~tlon SOIL AND ROCK DESCRIPTIONS MilL Depth Type N
- ADV, 1!1!!!!.
k C ~ Contact tWeathertng, riefecta, etc.}
!Type, texture, mlne:ralog,y, eo1or, 'ha:rdne!'IB, ete. l and or It ft No.
Reo. roln/1 Graphic p*l lo-4cm/aec B
- Beddln~
0 l&6lffsws:._~...!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~*~m7 c~d~lu~n~l~to~h~l~*lh~nlln~a~ll~c7 1lv~:,~o<o~nttJn~!!n~:*~*~o~m~e~a~l~lt~vf~ln~r~s~n~nd~
lnyon~ up tn 20 mm thick nesu hottom *.Ru<tor'f"" 0. :lO tsf
-20
-40
-60
- --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
~ 0 [ 813
[ S!4
- -so ( Sl5
( Sl6 17 18
]5' fft'C nonplastic; oontnJns a fe>\\ gravel piecea up to 20 mm in size.
Brown gravelly silty lmnd. Widely graded: 6Ubrounded gmlns; fines are nonplastfc; aotl tnins a few grnvel pieces up to 20 rnm in siU!.
Similar to Sample B13, but also contains subangular grains.
Similar to Snmplc S1~, IJul olcnn.
Brown modium Rand. Unifonn; Rubmunded gratns; cteun.
~Q rl----+--~--~~--+-r-~-r~---4--~T~O~P--~O~F~R~O~C~K~--f-~\\--------------------------~"'~"-------------------------i V'j /;lj Rusty
~
~-,:'1 NX-1 N'X-2 NX-3 NX-4 NX-o NX-6 100
- 3. 6 77 5,7 100 3.1 83
- 4. 0 100
- 3. 0 100 2.8 o
Fresh !ntcrnnlly.
l.ocnlly~~\\"'
~Soft-fissile is subject to sovt*rc wx~
- .,"'**~).~
V / / /
aoftoning. Pn rls on foli-
\\\\\\ '\\,
0 I I I 1 atlon. Not sllckunsl<led. \\ C\\ (\\ i rJ:J 11/I Strlatrd
\\;-\\'{j Chlorite
'i~'\\ '\\~
'~"
0 0 V ~
~L jFault-narrow FreAh. Clos<ly hrokcn on'\\\\~\\\\
/
1 high-nnglc lnlntR or on
\\
\\ \\.
pat11ngfi on high-nnp;lc
~"\\~\\
V //;
R2. 5 fol!nll<m. l're*h, nnt wx.. :;,:.,\\ \\
I...
~..,, )t 14 Schist. FPld*pathlc, fine-grained medium daTk p:ray (ofl-
\\lt!On matrix with disseminated moolum-gmlncd fel<lspars. Not nltcred. May be foliated diorite-:
Apparent narrow fault zones or
~hcara nt 17', r:;z. 5-85' And 88. 5L Hnve fclrispnr stringers~ Md mtcttceoua gouge".
Fnu to..
.~':~'~
.R5,0
'\\."\\
l'lQ-7 100 7 tl/ /;
~'
N20W, 44NW *
~~
Feldspor veining
- 2)
Sense of drag-fold-Ing at 90. 6 ft Is up.
NQ-R 95 45 VI J N 2E, 44S~: J
~~'\\\\.'-apparent faulted
~N~Q-~9-JI~Oo~--~~~o-i~==t/:t JJ~
- ~--f--------i-~li;~~~~~~~~:*~:~~~~~~*~;+:~,---------------------------~~~~~~-~~~-*n_*_*_8_2_.s_-_s_s*----------------~~
96..
BOTTOM OF JlORINC N
-Standard penetrnUon ret~lflltAnce, blow&/tt NOTF.S SEABROOK STATION Rae - IA'ngth t'<loovared/lonflh cored, ~
RQD - Length of oound core 4 ln. and longer /length cored, %
e S
- Spltl opOOII oamplo i Grrundwater
~ U
- Undlllturbed aampleo
..:I S - Shelby tube N - Dentooo D
wx F-Fixed platoo P - Pilcher 0- Ooterberg G - GEl
- Drilling break Weathered, weathering k - Coefl!oient of permeability ll A (tnt) *ShtlnrF:trcn~h rnt'f\\Stlrt'lri u
with Ton*nnC'
- 2) Rate of advanoc not nva!!able for NQ-7 to 9
- Used 300 lh hammer x - Orit"nted core PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE YANKEE ATOMIC ELECTRIC COMPANY t!l~!'!!~.!!!!!!*-...
Dale:,Jnnuary 10, 1974 Projeet 7288 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 PRt:SSURE TEST STRIKE, DIP F.., Foliation J
- Joint SOIL AND ROCK DESCRIPTIONS MSL D*ptTT)'pe N
OF Computed and or
- AllY, I!E!!!
k It f<
No.
Roc. mln/f
'T Grnphlc P*l to"*1cm/soc C ~ ContJHll 1! =c Hmldinl{
{Type. texture,. mineralogy.
color, hnrdrWIIIIA, etc~)
17,6 ~--~---r--~----r---~--~--_J~Il~!l---r--------r-~s~-~s~u*H~ck~cn*~l<l**~~------------------------------------------------------------~
to 2l
- 3)
NOlle 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\\'-
ba ryport. m('dium -gra.lnecl, medium gray, with gret"niRh..:
grny huc 1 nnri pink fC>idspnr spt1U ing.
Gent.~ r:1lly masfiiYC:
NQ-1 88 1.f'i 7J NQ-2 100 1.5 NQ-3 92 l.G 1.7 50 NQ-5 88 1.9 70 l-AO NQ-6 2,0 77 NQ-7 75
- 2. 0 75 l-70 NQ-B 100 2.5 52 93 2.5 48
-40 1-RO NQ-!0 2.8 28 NQ-11 98 3,5 27
,._90 NQ-12 97 0 ////;
NQ-14 100 N(l-15 100 NQ-10 100 97 1.7 1.6
-60 l1
~
v 35 35 72 72 NQ-17 98
- 1. 7 85 12 NQ-lH 102 1.7 NtJ-I!i 101\\
1.7 78 Nq-21 100 L9 Nli-2~ l 00 2.0 a:re joints
\\\\X effect~ on joint ~lll'fac Fresh \\qth mmm* rm\\\\"tl('11.,.. " )<
1 Rmtty jolnl-i Strlk<'R !: NW i Ru*ly loin!
l Minor rusty i
, Minor n.U'Ity Jnint aurfnccs nrl' not sUo kens idmL Locally shows folinl~rl zont'~
Cut hy futw-d fctdspnr q_unrtl
~~;~~~~=.rn~:tt:1~~r~~;ck llnfL
- 'r ~-
ftT11iOcff 11t !HP, fnHntion d<t-
'i y'"",.._" ~i~:.~~*m*cl volops locniJy ~'nguc.
I*' I rnt m£1ch3nic::lt cffoots of fnult
- FrflRh, nrlllot ell.* Joint*,.'"'/,." FlntH'
?.one nppnrcntly nt nround nnd rmrting!"; ~how minor
') "" ;
Grnln~d
!i6-5Flt.
surfnct" wx cfr<*ct!t.
Not
_,.-.:!.
- Py-rrhotite siickm'lsirlNl.
~.._,...
,_ -:; " Fuscrl fault
" ~ *~ rntcr!al
~~~I
,-'... l 400 I Minor MISty l*'rosh.
Par1in~-tt: locally RhOW tninor WX orftmls 1 but not *llckcnR!d<*rl.
'--~:
-;-:::1 Diorite. Mcdium... fint' grained. Mc(Hum greenish gmy. Locn1ly fnlint('ld.
- oUnthrn is somC"timC'R
~rn~-foldcd, Rook Ia 40° 50
- Minor rusty 1
Minor rusty j *. -~..
I 1M innr ruRtv J 1\\lcnuh<ld
~ nJuanhed JointM J;t rlntcd Frc-s:h.
Not wxT hut I~
nlteT't'd hydro1hcnu.;l1y to lighl ;-:-rc:C'ni.Rh gt'tly
..:olot*.
Po rtlngH n t"'e" not Rl!okcn.lrlon.
Fr<*Ah nnd hnrd. Brm"'
Wf'll~ l\\PlnUvt*ly minor hyflrnthf>nn:tl flltf*rnlion.
~ '
- y y~Y
'j::: ~._.
...,.... JI"¥1 mcchanlcnJly deformed, ap-prnncbtng fault--csuhonatc-vt*inlots.
Flna-grn1na<l rock, wtth chlorite < ?) apccklin~. l.o-cnll.v foliated, out through-not h.v fclrlRrnn*~lnlots. -
tirnn()(UorH;:~. M<'tlium-grafn~~d. Lncnllv RhrmA ten..
dency In r~~HaHnn, McrUum gr<"cniAh grnv.
~! ~":!
.,~.. -:::;
- Vnllnt-NI-fuAcd
-:!. ;:_-,Cntnclm'!:tle l<'t*(*sh fiflft hnrd.
Lno:ti.Jl':-;~.;:'11 minor h\\('nohlnJ-1. Pnn... l "', !-
\\ 1\\nugh not ttllck-f'naldt>d.
lngs ¥~hnw m inn-r '\\ ~
1: "JJ-
~rfC>cls, hut arc nnl
)1. "?"'
- "' ltckcn:t lrk*d.
I 'l<
~
tirnnorllorilP.
Mct1lnm-gralnc-d. mc*Hum }trccnlsh grov. Fnirlv rnnn~lv;:*. llnrl.:
chlorite npcckling. rChlor-Uo* not nltorod nrprcclahlyl
> ~.
~Fine 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 Reo Length recovered/length <HJred, 'J..
RQD
- Lenf(lh of Bound core 4 In~ Md longor/lcngth cored, '1
!i! S
- Spill spoon.. mple
¥, Groundwal<>r
[;j U
- Undisturbed 8l\\mplee
~
S - Sbolby tube N
Denloon F'- Ftxerl pl*ton P - Pltchar 0
- O*tcrberg G-GEl D
- Drilling break k - Coolllcionl of wx
"" Weathered. weathering permeability
pth~; nott:'d WC'rc rncnsurod If along ihe boring** 1 not vcrticnlly 21 Wn::;h!"tl thrnu~h cln.v if* 34.0 1 - no R:tmpl(*s tnkc:n Rollt:'r htHcd to :Hi. ll'
- \\~
Nn nlay~ prr*::r>nt: tlwr<*lnrt~ no wntt*r ~*nntr-ttlt; \\\\PTI~ d(*t~1*ndrwd.
- 1i Uo:llt*r hltt('d 1o G2.. 0 ft.
SEABROOK STATION PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE YANKEE ATOMIC ELECTRIC COMPANY u~.~.~~~*---~ Ont<>: .Jnmm rv 11 1 I H71 Project 7286 PACt: of I LOG OF BORING HRF !i BORING LOCATION Sec Soo!lnnd 1\\na<l *ito plnn CASING ID _...:3'-.!!:lno.:..* --- CORf: S!7.E 1-7/~ ln. GROUND lo:L IMSL)
- 17. ll ft Df:P'rll TO WA'I'f:Ufl>ATE EL.
SAMPLE MSL Depth~Type N WAH:R R~'{f. CONTENT or llQD PR ESSU!l!: TEST Computed and or ft ft No. Reo. ADV. lmin/f 'J Graphic ~ 1n-1:m/soc 14~ ~ Hr. !'({*2 n7 2.5 70 Nt~*2f 100
- 2. 7 f>{)
b'ln Nti-2n D7 3.1 68 ~ -100 NQ-27 98 3,*1 47 l-17 NCI-28 102
- !,2 47 N(/-29 92 35
~ 1-ls NQ-30 93 3, l 57 NQ-3 97 3.1 62 ~ ~9 NQ-3 100
- a. 2
!l.1 -120 Nfl-~;l 1 on 2,fi !i;J l!Jl'. UOTTOM t-1- N -Standard penetration r<"lllstance, blows 'rt NOfES Rec - U!ngth recovered/length cored, 1r RQD length or sound corto 4 in. and long(>rllengt.h cored. 'J !i! S -Spill spoon *ample ,& Groundwater "' U - Und lsturbed sample* C) ~ S - Shelby ruP,. N - Oenl*on F-Fixed piston P - Pitcher 0- Osterberg G GEt D Drilling break k - Coefficient of tvx. - Weathered, weathering penneabiiHy PArE STAflT/FINISH DPcC'mhf'r 2H, l!l7:t I Jamma A, 1!17-i TOTAL DF.PTII _,_1,_!17:_:._,_7 __ n--'.!.ft !HlTJ.Lf'D RY Am<'ricnn Drlllin& k Hnrlns Co., 1'. Conning. STRIKE, DIP F ~ Foliation w !;! ~ : ~~~"ttnct ~ ~ B = neddlng u lll LO(KiED BY Soli - 1\\., Polk* Hock~.L IL Hnnd SOIL liND ROCK Df.SCR!PT!ONS (Weathering, dcfecta, etc.) i.:ONTII\\'1H:ll f?llOM PllEI'!Ol'S PAm: .......,....,.,..,... 1*: ~>I an~ nni Hllel\\(*nHidt*{l, Y '")1."')1."' (Type, t~:xture, mineralogy, color. hardnesA, ete.; ChlorUcox nrt* et!U dark gro('n. - ! Slight wx ., ) > I I ')r >-., H~.:*t'ollH.'f: vn,trJcJy fnHf'!lcd. Ap~ _ H
- ,, I pa r(mtly cntaclnstic. Ltghl L.,1i~ ~
gr(.'lcnfsh grny
- t-~:r 27' ftrC'sh nnd hn rd.
P~n'l in~s ....
- J,..,.';
1-ar<' not $!lck-r-nf;id(*tl. )'!'"'"'""" 1 Slight \\\\'X ~ ~*l'l4. 2 (l.wn cnntnet rHJs o- ~17,,~~n,i nli<*.rc*l.
- 10°
~ Not shckcn-
- *"'lX'cnlsh 1-lL gmy, fln~-grnln<'<doflntcd.
¥~~~ lAL'li'UHc('l 1 ht"<'CCifitNI cnnt.aut. Din~ s j*L...,-.. bmw~ di!rk grav unnltt'J-ed. 40° -~.. ' Nott*: At 171.2'
- 1-'!'(*Jo<h dinb~,:-:t* litllts Nolt*: At 1:11.7 1, cont:v:l or dinhas<! is 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 dinhnst:' dfJt'fl 1wt <f<'ml m*rosf{
i' ** nhly n1tC'rNL into ont:v:\\nRfh*. I -'"I -- nt* !lORING SEABROOK STATION PUBLIC SERVICE COMPANY 01' NEW liAMPSH!R:f: YANKEE ATOMIC ELECTRIC COMPANY Date:,Jnnunrv 11, Hl74 Project 1286 PAGE of I 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 EL.
SAMPLE llATI MBL Dept.bhi'Tn>e N OF and or ADV. II It No. Rea. 611>/f C~~U:h-or RQD PRESSURE TEST STRJKE 1 DIP F
- Foliation C<>mpuled J
- Joint Jill!!!.
-4 k C
- Contact Graphic ptl 10 em/lee B *Bedding 17,8
'oo -.. = ( pB 3 0 1:"2o [ ~9 [ tJto 5 l-30 [ ~11 fi [ t;>t2 5 -20 ho. ~13 4 TOP OF SAND ~4 13/6' r~l~ .}~. TOP OF TILL 46,5 70 85/6" f:-oo ~ 17 18 TOP OF ROCK P2 3.0 57 VI 531 BX-1 -40 58 1-BOTTOM OF BORING N - Slalld.ord penotraUDtl f"ll*lanoo, blowe/ft NOTES !lee - Leor;th recovored/lol>r;th col'<ld, % RQD-LeoBI.b of aOWid oore 4 ln. and lonpr/lonBI.b..,..,d, % @ S - Spill apom sample J Orotl!idwater i'J U - Undlllblrbed 1amplea o-l S - Bbelby lube N - Donlam F
- Fixed plololl P - Pltobor o-O.l.erberr a - GEl D
- DrUIIng b""ak wo: - Woalbored, ""athert.q k
- Cootrlclent of ptrmeahlllt:Y l'l!l!
ca:< 8il SOIL AND !lOCK DESCRIPTIONS (Woalherlng, ddeclo, etc.) (Type, l.eX!ure, mlnoralOCY, color, haYdnese, etc. l 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.
~ Gray ollty clny. Soft; rnerllum pl.. tlctty; *lightly otloky. *u(!or)
- 0.261*1 Rlmllor to Sample SR, but inoro otloky.
- 0 ttor)
- o. 15 l*f Similar to SampleS~, but fl1<>re otloky. s 0 (tor) = 0.14 !of Similar to Sample 88, but more sticky. a0 (tor) eO. 20 tar S.lmllar to Sample S8. s0(tor) = 0. 25-0.30 tor Similar to Sa mole sa, f*w silty fine sand layera In l mm thick. R (tor)~ o. 30 tar Gray-brown silty medium to coarse sand. Wlde)y graded; Hncs are nonplasUe; eub-angular to subrounderl grains:; contains a lew gravel pieces up to 8 mm in size.
Minor rusty Not w*. Altered by hydro-/*:;: *.._\\r..'l Minor rusty thermal bleaching. 1':;-'\\*.,)_,, Note: Cas,lng bent at: 14 ft while driving Catacl*sllc, foliated. Fuaed breccia, medtum -light greenrsh ornv f-and hole aounrl not ACCept N-barrel for 5 ft only. Could not risk a second run due to oavlng potential nt baRe of casing. Note: Rock is medium-f!ne grainedt ~roundmaa~ contains sub-rounded £ragTnents and micro- !aultcd pleoe. All fused. Joints show minor rusty aur!aoE wx effects. Not sltckenetded. SEABROOK STATI_ON PUBLIC SERVICE COMPANY OF NEW HAMPS:IllliE YANKEE ATO!.!IC ELECTRIC COMPANY '-* UliiBd onglneem.---.... ~.-..-.-~~ Date: March 9, 1974 PAGE l of I I LOG OF BORING BORING I.OCATlON Sc~ Scotlanrl Rond sit{* plnn CASING !D __ .:.:,~..!)In~*-- GROt'ND t:L *MSJ.l 17.r. f: E!.. S.~MPI.E RATE "'SL n.pthrype X or* nnrl or A!J\\'. It ft 1\\:n. lice. lln/1 !7.5 2\\ f-1 0 r-20 0 30 f-40 F-50 -20 60
- '\\.i.5 Nl'/-1 92 1.5 70 NQ-2 R3 1.3 NQ-~ 100 1.3
-40
- ..80 NQ-4 77
- 1. 3 NQ-5 100 l. 4
- -so NQ-6 100 1.4 NQ-7 93
- 2. 0 f-100 NQ-8 100 2.1 NQ-U 97 1.9
-60 f:,t.H rQ-10 85 2.1 NQ-11 RO 2.1 ~20 NQ-12 100 2.2 NQ-13 llR 2,1 ~:1 f'l(/-1-1 9:1 1.1i rq-15 97
- !.n
-AO f!-10 r(~~~~ A~ 2.a ~(/-17 02
- 2. 0 HR
.I) Nont* 42 47 13 2.1 8 0 25 55 47 12 7 s:; 7:1
- 1:1 6:1 3:1 2:.1 COBE SIZE Cir:1phic ffl VII!
VI~ Yl//; 'ill! [U I'; VI/!: Vf//; N Standard penetration resistance. blowR/ft Reo Lenl{th recovered/length cored. r~ INCLINATION __
- 1*-~"--
HEARING ~T TM rF: STAI1T/FIN1Sll _;:;.lo::,:n:.;.*_:":z.*....:1.;:.!1:.;_7*:._1 __ I .Jan, IK 1n74 1 7/R in. TOTAl. UEPTH* _ __,2"':l.:.:.fi,_,. 0,_--"-(t DRfLLED BY Atnt!rierm Drilling & Hodntp T. Cat1ning. n.:1 II .Jan. I H lf>7*1 Cotnputc>d lO - 1 u':n/~t'<: TOP 'IOTES STillKE. DIP P = Fnlintlnn
- '.,,JI>int
(
- n. (.'tmtnct
~ l'<*<lilin~ g 01' flOCK t $) N*llil*:, A:lNW ~~in~: #~liJ.:. tHI!*:, 1\\RNW, ~~li<<*. ~lift!.:,r. Minor rusty Minor ntsty l' cor<' lost Minor rusty Driller brnkcn nt close' intenraiN Discontinuous o; vertical Jolnt strikes NW !dfita:n BY Roll-~. Polk* Bod,",J n Bant! SPIL AND 110CK DESCR!Pf!ONS f f'yre. texture, mineralo~, l.'<~lrn*, hardnt*fl!i!, E"tc. i Fnirl_v fn,flh :md
- ~ r h:1 rd th r*oughnu1 hut
~- "' ftlte'r{*ct h\\-' bleaching. ::7' ;_:;~ Pa~1.ings nrc not 'JOO ;:;_ !=!lickcnsidud. CntnclnHtic. Folintcd, s:ms-f'urllizcd. dt>formed diorite. f'in~ t<> medium ;;rnined, light-greenish to tannish gray. Not wx. Core broken "'7.~
- throu)lhnnt inlll 1' to _--:::' _,:
.p p:ioCt>s by pcmr rlMUing. Aphanitic-yellow-green Cat'flclastic. Fairly fine-grained, light greenish gray. Foliated, Apparent dnrk (chlorlto?l rnin~rals scattered -,. f.."t
- loonlly, f'-lsNi intnu~ive contncf NE5:trik t-!..,+: f!5* 2
- umRc*.t'arti ~ray me gr.
- Htlc
~ C~l_:Hf' Ym.lf\\g('r th:m nltcration in Not ws~ nlt'ncht*cl hy ~; l v9 ~i.'k count!-\\' rouk G.;Ycltc \\'Uinlct.q,
- r;~~o:~cr;:~~~:J~~r-
>()<~ Cntnclastic. Medium f'rnincd - jlrrty. g '<)C.-; ~ foHf\\tod diorit~ to 103'. l'"inc- .::!:'b ;:-, gl'nin<>d, folintod with !irnntl 112 1 to 11 f 1 CIH"(' ~::.....:::: 1 qunrtr. eyes below. Bccomt!A very nne-grafnod. lHot*ltt~-gnmndlurllP. 1\\fNIJum ~rnlncd, light gn*cntsh gra,v. l.m*olly rotlnlo<l. GrnnrxHoritc~ Light lnnntsh p;rny {extcnsiV(' hlP'a.chin~J, fQHntcd, mcctium grained. SEABROOK STATION RQD - Len~~th of sound core 4 ln. and longer /length cored, 'T 1 l An~tlc hnlc PUBLIC SERVICE COMPANY OF NEW HAMJ'SII!RE. Q S - Split spoon oample i, Grwndwar.er 1!l u - Undl*turbed samples C) !j D 8 Shelby tube F-FiXed platon 0- Osl.t!rberg - Drllling break N-Denleon P-Pitcher G-GEl k Coefficient nf w,; - Weathered, ~nthertng peMneah!llty
- 2) Wnshctllhrough soil from 0-65.5' no sa.rnpl<' taken.
- 3) Rnllcr hlttod to nr,, 0 *
- 0 No t!low~ t*rt*Hmt; tht*n~forf', no wntcr
(!*'lil!t*fif~ \\\\Pn' !ICfPrtllint*d. f1) 11d~ ~~ nnlv n purtlal li."t nf,fip and stt*ik<' dnln Date: PAGE YANKEE ATOMIC ELECTRIC COMPANY 111~~~*;.__.- Project 7288 of l LOG OF BORING $H.f' 7 BORING LOCATION See Bootlancl RM<I*I!o plnn CASING fD __ !.!.3.!!1n,. __ CORE SIZE 15 NQ-1 92
- 2. 0
- 15 NQ-1. 100 2.4 4R
~r,o ~Q-20 100 2.2 32 -100 N(l-21 100
- 1. 9 45 E-m NQ-22 E7 1.9 28 NQ-23 100
- 2. 0 51 bRO pqQ-24 100 2.1 55 jN(I-25 100 1.7 2R 8oo ~<1-211 100 1.11 72
-120 IN<I-27 100 1.7 25 IN<l-2R 100 J.A 40 ~00 NQ-20 ]00 1.0 H7 '(1-30 100 1.7 RO ~10 NQ-31 100 1.0 52
- NQ-32 100
- 2. 3 55
~2 NQ-33 100 2.1 53 -340
- NQ-34 100 2.1 nn
~3
- Nq-a:; 1(!0 2.5 54 i{(l-36 100 2.~
65 ~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- N ~ St.nndnrd penetration n!Slstance, blows/ft Rec - Length recovered/length cored, 1 f INCLINATION ____1![_____ llt:ARING SHEorlnlt' DATE START/FINISH _ _::J~an;!!*_:R::J,_1~9~7*::..1 __ 1 ,Tan. !R, 1974 1-7/A ln. TOTAl. llF.I'TH _..;.2:!!o~C.,~O:...._..-'f~l l>RJI,t.ED nY American Drilling & Boring; T. Conning, xorr.s s - Sl!okrn*ln<' amj: ~*~~ J Nf*lllW I 42NF. F ~ngiY: rtNr: t NOGf:, 17NW 8 Hn t*izontnl F' ~98~: ~~~~ ~ N!iHE, 52N\\\\' S am:~~~~:~ x - Oriented cnrt' 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 CONT Nut:IJ I'IIOM l'lU:VIOUH PAG>' Br~ccin-fuacd Driller ground Slight wx Not <.*xtt*nslv,,l:v alteration only 1\\lodlot*n(e blc*nohin~ altcratlnn nhn\\'C, Not slick-N flf wx. }\\rmw m iv-r \\\\X I'rft'{'h> Joc:tllv pnri pnntll<*l {(! orrs~l vclnlcts Fused ntion, No! :did;- -~~ _ J*'mwrl t'n!-'irh*d, CmnpHtt'nt,_ *--- ftifr1.V hru*tl. Ut*llh; ~ ~ ::;,._ hrcocln fnlrlv wt>ll. ~ ~~ througlmut !*s-~; .t*A*P. Not \\\\X. Minm* snd:wt* '.\\X pfl(*ct~ nn lnintn <:mrlpart-A,. ~olo"'* ~~~:;,.Not ~Hckcn- ~{~~ Cataclnstic. Ftnt'-grainr.1d, locn.11y foliated nnrl brecci-ated (fuaod). Med!um-*larl<- grecnieh r:ray, F.pldot !zed. Cntnoln,uc. Flnc*-grnined_ lk'eomin~ promttwntly f1)ltnlcd 1 hn*c<:tn!od. Not cut hv cros~-cuttlr'IJ! vein-lets~ H :1 rd 1 hr!'ccirt 1~ fm;ced (:tnnc*:tl<'rli, Xot riiot- _ Rtlu nr flli<lkt'nsldnd, Ml!rihun s:rrr<'ni:<h grnv. C.nlncln!1tic. Flnc-gralnert_ matrix, t!piclotC' bandinf!'. E:rt!*nsfvc fust!d hrcccin fabric. Light yctlov.-~rcc~ mylonitl' fnplmniticl at ~ -] mvlomt(' 210.6-211.6t~ FusC'd Smuoth. Mtl!k*lntc N t t tl throughout. Not Rlickcn-wx, minor !'l:triatcd.r:in;~x~,~~l(;:~~:~s
- .:o Pid<"d.
Slickcnsh'led on not polish<>d. s ~- Chnton-Ncn\\ bury f;tult~ Contact foHntion sltckt*nstdt*s, ~~:::; ~ fuseri. Mod£'rntc wx nt 21!J.2' Pyrite xta.ls slick<"'n.sidc.s n.nrl ,{..,..:: Diorite. Slijtht alteration ~:;:;~~(;::~ sortcncrl rock at 1-v "ftv: !"cl}nlintlnn1 to 1nhout 1 21 R'.- Slnooth. Ohlorll 222.*1'. -~ ~-"',_,. l"Jcumm gra nm 1 mm ium $'(ray. Veined below 21A'. Diorite. Mctlium ~rnlnetlt medium dn rk to dark grRy.- Nnl nltcrcd hy<trothermnlly. lrr(tj.,ru1nrly calcitc-\\*cined throughout. Fust!d, SEABROOK STATION RQD - Length or sound core 4 tn. and longer/}cnp;th cored, '.i PUBLIC SERVICE COMPANY OF NEW HAMPSHIR£ YANKf:E ATOMIC ELECTRIC COMPANY. ~ S - Split spoon l'la.mple ¥ Ground~Atfjt ~ U - Undisturbed samples !j 0 5 - Shelby tube N-. Dentaon F-Fixed piston P - !'IIeber 0- O*terberg -Drilling break G-GEl - Weathered, weatherlnl( k - Cot'*fficif'nt of f"'nnenhlllly Projf>ot 7286 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 MSL N OP' or
- ADV, El...mSAMPLE RAT! C~~u~ <>rRQD PRESSURE TEST c:omput..a STRIKE, DIP F
- Foliation J
- Joint SOIL AND ROCK DESCRIPTIONS IWeatherlnR, detccLI, etc.)
(Typot texture. m lnenlogy, color, hardnetu.'l. etc.) ft ft Reo. lmtn/1 Graphic 17.6 ~ l0-4c':../*oc I 0 C
- Contncl ll ~Bedding s-0 r-Io Sl,sA S2 sa S4 S5 S6 S7
[ 88 t:-zo [ S9 ( 810 0,5 24 29 14 7 4 2/IB" 0 3 8
- 3) 29.4 27.4 33,8 40.4 41.9 48.9 51.1 33.1 43,3 Similar to Sample SlA, but vary stiff, * (tor)> 1.0 tof 2)
Similar to Samplo SIA, but very stiff. s~(tor) > 1. 0 taf Similar to Snmple &t. but fewer brown spots; softer. s (tor).e; 0. 5!t tsf Sim!lnr u Gray a!lty clny, Soft; medium plostlclty; slightly sticky; contains one brown spot 10 "'"': in size. s !tor}::::. 6,15 fsf u Similar to SampleS?, but contains oome slightly darker and l!ghter colored layering. - suitor)~ o. 15 tal Similar I o Sample 87, but contains some darker and lighter colored layer. d!pplng-10°-
- (tor)
O.!R tar u Similar to Sample S7, hut oontalna a allty fine snnd layer: sticky (very disturbed). -ao C Sll 2 33.0 Similar to Sample 57, but very soft an~ atloky (very disturbed). 44.3
- ~--~--~---+--~--------+---~-T~O~P~---~O~F~S~A~N~DL---~+1--------------------------------------------~------------i
[ 8!2 -20 Ho( Sl3 [ 814 ~~0
- 1)
NQ-1 -*o NQ-2 ~0 NQ-3 NQ-4 ~0 NQ-5 NQ-6 -60 NQ-7
- "fiO NQ-8 NQ-9
!;-;Jo NQ-iO -80 "'Q-11 ~0 NQ-1 NQ-1 NQ-1 l-11 NQ-1 -100 NQ-1 I-12C INQ-1 NQ-1 NQ-1 ~3! NQ-2 -120 NQ-21 ~4£ &t*s NQ-22 5 0 39 52 1.5 95 1.3 98 1.4 100 1.4 93 1.5 100
- 1. 0 100 1.0 100 1.0 100 1.1 100 1.1 100 1.2 83 1.2 100 1.2 98
- 1. 2 100
- 1. 0 92 1.0 too 1.0 100 0.8 100 1.0 100 l.l 100 1.1 100 1.0 0 7777 25 t7b 83 74 82 95 63 82 87 31 76 78 93 80 2a 83 5A 100 82 70 62
~ TO!' OF ROCK
- 3) l'I7RW, 57NE F N88F., 50NW F N81E, 36NW J N31lW, 40NE F N49W, 27NE J N10E, 25SE S N79W, 54NE. J N36W, 29NE J N87W, 75NE. J N50W, 27NE s N35W, 36NE II N87E, 64NW N* 7E, 35SE J
~z'~ \\1~ N54W: 47NE J F NR2E, 37NW J ~lR~: R~~~ ~ ~loW: U"E ~ Gray-brown sllghtly silty fine to medium sand. Uniform: nncs nre nonplaatic. Slr_niJar to SAmple Sl2t but tlontnlnB a. clay layer and few gravel pieces up lo 5 mm in Rh~e. Similar to Samplo 512. hut cnntn1ne a clny laye1' and a few graV"el pieces up to 15 mm in ah:e. Slight wx Slight wx on partings D Slight wx Slight wx D I Gent'rally nnt wx Inter-..J"- n~tHy. nrr.aks on foll-
- _ "7:.;:
at ion with slight powder,l..= =-:: wx effects on partings t 7:,.:;. surfaces~ Mcdlurn 1 ~ ~~ 6 greenfnh-gray hydro-4~/. thermal alteration. .d<-;: £c. Cataclaatto. Fine-grained, bleached to light tan-green gray. I A-;._!;_* ,IJ;J.,p.t:. b-.~
- -;::"' Highly deformed Not wx.
~Hnor v.:x c(- ~;... A-~ welded breccia fects on some partings ;:..- Welded breccia as well as some tttrtated1.:::-C.:: throughout but not polished surfaces~ Less hJeached ~:;.~ FUsed contact, deformed~ 60° ~~
- 80. 0* Latac astio. Meatum -ctarK Foliation
,::::-!-~ 83
- 6
, _greenish gray. Deformed veins. Not wx. Drills welt 4~~-;
- Llght green-gray hydro- ::;:_.-;
thermal nltcratlon. ,:. -;:,,.-:Fused breccia ~ Soft. powdery zone at I~ ""' EpidOte Cataclaatic. Finc-t! Soft-strte.tcd 96ft pri'Jbably wx asaooll-- ' - grained; medium green- ~ Powdery surface atcrl with joint. Local *,-::;,., -:; Ish gray. Foliated,
- Chips striated ioint* or Loc*l fused breccia Chip*
Chlorite partjngR usually parte..:.,..::.. : Diorite zones. on rolfl\\tlQn. 1 ~ ~ ~ CataclasUc. Fine-Not wx. Joints ahnw ~-._<<:::;. grained, rnedtum green-m lnor *llppory chlorite- '.< 7f ~ l*h gray. zones of tnlo coot1ngs. Not pol- ~~ !_* welded breccia, hatr-l*hcd. SubJect to hydr**r~~j Welciod line epidote stringers. thermal alteration, breccia eptdotl7.atton. ~,.A~ Wclderl breccia A k. -A throughout -... *~... Not wx. Minor uurffl:CO ~Aj,)E_ wx cffoctA on partings. ~.. ~A': Partingf'! nlso sh.ow = ~~ some otrlated, not pol- !_'Z_*~ l.lght tan f8hed su1'faces~ ~~ ~~'I- .~... -".A...-A..~ Not wx. Medium-gray green bleaching due to
- ._ ~
hydrothermal alteTatlon. ; 1;;..; Medium Mino-r sul'face wx ef- ~ t<,~v. grained fccts on pnrtlngs. Some - ~ - oartln*a striated. "'~ "'
- CataclasUc. Fine-grained, medium light
- greenish-gray. Local welded breccias.
Fair!~ W<J!l foliated. Cataolaatto. Fine-grained, ruaed breccia-throughout. Medium greenish-gray. N - Standard penetration realliW>ce, blowo/ft NOTES SEABROOK STATION Roo - Lonath reooverod/loftllb cored, % RQD - Lonath of oound core 4 Jn, 111d longer/length cored, 't fi! 8 - Split *P""" umplll J Groundwater ~ !l
- !l!ldlolllrbed.. mpl01
~ S - Shelby lube N - DenloOG F-Fllled plotoo P
- Pltcthor o-Ooterberg o-GEl D
- Dr!lllnl break wx - Weathered, woatller!Dt k
- Coe!flcten\\ of pennoab!Uty 11 RoHer bitted to 53 ft.
- 2) s (tor)
- Shen r atrcngth mflaaured with To'r'Vane
- 3) Th!o !o only a partial Hot of dip *nd
- trike data.
x - Oriented core PUBLIC SERVICE: COMPANY OF NEW HAMPSHmE YANKEE ATOMIC ELECTRIC COMPANY l4'!!!!!!~Y!~*---.. Dote: Morch 9, 1974 Pr.,Jeot 728t PAGE ___1._or -L-I 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 STRIKE, DIP F
- Foliation "l S
~ =~"o~{...t 8 !;l B
- lleddlng Ill S
- Sl ok.. no do
!~ ~SAMPLE N ll;gf.~W:!.!A:WTl~!:!lhll.._*_r_li_Q_Dt-P-R_ESSfU!l'R';EmpTiiiESii<rTi or A IE!!l k ft Roo, ~ill/f Graphic pol 10-4om/oec 0 LOGO ED BY Soll - K. L. Polk; Rook-J, R, Rnnd SOU. AND !lOCK DF.SCR!PTIONS tWea!hertn~. d,_fect.e, etc. ) fTYpe, tenure. mineralogy, ootor, hardn~ee, etc.) ~45ri---~~--+-~--~~+--4------r-------~~-~--------~--------~~-------------------4 ~/ ~mt*~ ~~~~ Jf E Not pollohed. Intens\\!ly defonned, re-1 N85W, 201m s welded. Not out by oroos-outting vein lets, No N86W, 60N E F observable calcite. 1.1 57
- 140 NQ-25 100 16<1 NQ-26 98 NQ-27 98 170 N0-28 100 172 1.2 1.2 1.2 1,5 1.2 78 47 57
,) N82E, 28NW J N59W, 40SW J ~ ~it iii ; ~m~:.~~:& g N27E, 70}iW F N89E 4GNW F BOTTOM OF BORINO Ch!pg Not wx. hydrotheT!Tl-nlly altered to 163. Gt. ......."*C 160. 2r to ~~t:3 1 ~;!~"0li,tn~;fJTn~cd Frosb, esE~entlally un-..;. ".- 160 4, epidote. Medium greenish altered below parting* -:::-;:-: M ionlte gray-tan at 159-160, G ft - generally parallel !2:.. --!! y r 11 tl
- A f t 1,...,._.
Ft.ult zono-tran*ltlooal-not slick. o a on. ew s r- ~-;.,~ 1 Diorite. Slight altet"ation ated surfaces, not v -x.... x and foliated to about t 68ft polis bed. -;,. ~ Medium-fine grained. ~~or,..,...; medium gray. Chips Not slickensided ~ Smooth jolnt 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 "' U - Und!II!Urbed eampleo § S - Shelby lube N - Denltlon YANKEE ATOMIC ELECTRIC COMPANY 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 o! 2 I LOO OF BORING PAGE 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 MSL Depthl'l'ype N OF Computed and or ADV. l!P!'l k ft ft No. Reo. min/! Graphic p*l 10 "4cm/*ec !1, 8 110 Sl,Slfl 82 83 84 85 sr. s1 ( SH l:-2o [ S9 [ 810 f-30 [ Sll 27.4 28.2 33.0 37.9 40,3 40.0 45, A STRIKE, DIP F v Foliation J =Joint C;: Contact B ~Bedding -~ SOIL AND ROCK DESCRIPTIONS IW.,athoring, defecte, etc.) (Type, texture, mineralogy, color. hardnees. etc. I own ~1!lYCY top!lol : some' stflfl~~ *roohq organ To ~lOr, SlA-Mottled gray brown y-brown silty olny. [,o\\\\ plns!lctty. ~(lor)'- 1.0 IRLfS2*Simllar tn Sample S'f.A, ooky ctu:rc, s~oii > l. 0 tsf. ~3... b:lve-brown ail Low to medium fJ ve ~~;1iu (t~~) g_k\\': 3~d~Ss~~t!<f1~~ rtroctu li' :u\\f:o stsJis~4-
- o.
- f.
SS*Ollvc*hrov.n to olive-r:r Medium ~lastlol!y; y: oontelno a few *lit tayc.ra< 0,5 mm thick. s (!or)~ 0.36-0.42 tsf,
- S7-Simllar to Sample S6, hut *lightly !It icky, *ultnr)
- H.32 !Nf, Gray silty clny. Soft; medium lo high rtaattelty; sticky, "u(tor)- O, )5 t*f Slmllar to Samp1n fif1 1 iJUt hnR R hlooky !ftrunturc; app<."IU"S disturbed. su(tor; ""'0.2:1tllf-F\\lm llnr to futmpfc SR 1 hut hcu; n hlooky Afruoture~ nppenrs very dlsturb(lcl, surtor)-::::O.lOts:i:
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 [ S14
- ..so [ 515 24 5~~---+---+---+---4------~~--~~Tn~r>>
40 57.0 TOP NQ-1 90 NQ-2 100 1.0 NQ-3 100 I. 2 NQ*4 100 1.2 -80 NQ-5 97
- l. 2 RO NQ-6 100 1.5 NQ-7 100 1,9 90 NQ-8 96 2.0
- 80 NQ-9 98
- 2. 0
-10 NQ-10 100
- 2. 0 11 64 1.9 NQ*12 100
- l. 8 26 43 28 53 65 9R 48 83 ROCK N81 r:, 68NW f F
~jgf: ~¥~~y! N~4W, 56NE F Gray fine sand. Uniform; clean; very fast reaction to ahaking test.. stmlln.r to Sample Sl:J, hut also contains a layer or coarse sand. 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. ,;C>~------------------------~ ~ Chips Not wx intornally, but ts ;~: ~~ \\Vclde-1 bleached by hydrolhermnl.;;.;.d.' breccia alteration. Minor wx ef- ~~';' throughrut £ecta on pnrtings. 13nrt."' ~.t;.* f. on foliation. No poltahcd~ ~ slickenairtfls. Soml" pnrt-.,;*-~ "".0 lngs 8lriated. ModerAte (. *'..& "'i w~ 72~5' to 74.5'. .f~~ Cataclaatic. G~nerally fine-grained. madiutn greenish gray (cpldotized l'redom LnanUy welded breccia throughout I Chlps
- 72. 5' Cround obipa
- 14. 5' Chlorite Chips Chips-sl!gbt wx Chlorite*
- triated n
Driller mlslatoh Slight wx r:;.S.t: OJ~..4, ~:!.~ Tnn Not wx fntornnl. Joml:;:; 1":..,"", r...,. mylonite A.nd partings arc not ==:::;==: polished.. Some striated 'C'_! J1. _ aurfnces. C' J- ':. . :;/;. ;;: h<"'.,..... "... )( r .. ;'~-"~ Fresh an<l hard. Drills, '!< " well. Joint* nnrl pnrtings k )",.. not slickensided. Not ~.,. '>' affected hy hydrothermal,.,. I' nlterotion or mechanical f' 'p( )I deformation. 1'.>< '! )<I<)( quartz voinlete x-out fellation. Light yellow-green al* _ terntion SO' to Rl, 7*. Diorite. Medium-grained, medium gray. _ Unaltered reel<
- feldspar:
vetnlcts. foliated to about 89' depth. Pi<>r!te
- amphibolite.
Medium-gr-ained, dark gray. irregular ields-pathic velnlcts. Diorite
- amphibolite. -
Fresh and hUrd. N~t ~ >t i' j v
- ,q. )I
~ <lofom.od or alto red by Pink Medium-grained, do:rk NQ*l4 100 2* 0 62 fot*lting effect*. li'J:*,;.\\ quartzite(?\\ gray, not foliated. -1oo ~a~--i---1---t---t---~~T---+-------t---------~~------------------------v~~~~~----------------------~ 100
- 2. 0 lH NQ-13 BOTTOM OF BORING N
- StAndard penetuUon reoio!Anoe, blowo/ft NOTES Roo - Length reooveNd/longth coNd, % I) * (tor) = Shear strength measured RQD
- X...ngth of *ound core~ in, and longer/length cored, %
~ S
- Split opoon eample Groundwater u
wlth Torvane. _ U - Undlttturbed sample* ~ S
- Shelby tube F
- FI.xed plototl o-Osterberg D
- Drtlllng break N-D<>nlooo P
Pitcher G-GEl wx .. Weathered,. weathering k - Coefflc lent of permeability
- 1-103.4, lA 30,6
" - Oriented core SEABROOK STATION PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE Y AN"KEE ATOMIC ELECTRIC COMPANY I/P..ffllf'llt8d 81IIJII10018 *---~ ~ .-........ <o~ll,....._c-- Date: May ~ 1971 Project 72 88 PAGE of I 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.
Sample #
SRF-lA SRF-2A SRF-2B SRF-3A 67' SRF-4A 43' SRF-5A 42' SRF-SB 175' SRF-7A 116' SRF-8A 155' Table 1.
SRF-8B 146.5' SP.F-9A 80' Summary of Samples Rock Type Amphibolite breccia Mylonized quartz-musco-vite schist Brecciated quartz-mus-covite schist Muscovite mylonite Chlorite augen gneiss Sheared granodiorite Altered olivine basalt Ultramylonite Brecciated qua:rtz~muscovite schist Brecciated quartz-muscovite schist 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 calcite opaques 15%
10%
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 Sio2 which can be 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.
texture of the rock is totally obliterated.
The original 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 pseudomorphous 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.
Amphibolite breccia. Plane polarized light.
Width of field 1.5mm.- This photo-micrograph shows a typical field of view of this sample.
Note that the large dark-ish hornblende crystals are sheared.
The lighter grey crystals are plagio-clase.
See also Photo 2.
Photo 2.
Sample SRF-lA.
Amphi-bolite breccia.
Crossed polarized lieht.
Width of field 1~5mm.
This photomicrograph shows a major shear zone in the rock.
The elongate crystals are de-formed calcite.
See also Photo 1.
Photo 3*
Sample SRF-2A.
Mylonized quartz-mus?ovite schisto Cross polar1zed light.
Width of field 1.5mm.
This photomicrograph shows one large lithic fragment covering 3/4 of the photo-graph and consistin~ of roundish quartz gra1ns and fuzzy muscovite.
The dark zones around the fragment, are shear zones of chlorite and other unresolvable min-erals.
See Photo 4 for an enlargement of the lithic fragment.
Photo 4.
Sample SRF-2A.
My-lonized quartz-muscovite schist.
Plane polarized light. Width of field Oo5mm.
This photo is an enlar~ement of the large li~hic fragment shown in Photo 3* The roundish grains are quartz, and the mat~ix is scaly muscovite, opaques, sphene, and tiny euhedral crystals of calcite as in the left center of the photo.
Photo 5.
Sa.mple SRF-2B.
Brecciated quartz-muscovite schist. Plane polarized light. Width of field l.Smm.
This photomicrograph sh?ws the chaotic texture typ1cal of this rock.
Note the len-ticular fragments of vary-ing grain sizes.
The round white crystals are quartz; the darker minerals are scaly muscovite, sphene, calcite and opaques.
See also Photo 6, an enlar~ement of a part of this field magnified.
Note the similar-ity of this sample with SRF-2A.
Photo 6.
An enlargement of a portion of Photo 5*
Sample SRF-2B.
Brecciated quartz-mus-covite schist. Plane polarized li~ht. Width of field 0.5mm.
This photomicrograph shows the chaotic texture typical of this rock.
The round white crystals are quartz; the.darker minerals are scaly muscovite, sphene, cal-cite and opaques.
Note the similarity of this sample with SRF-2A.
Photo 7*
Sample SRF-3A 67'*
Muscovite mylonite.
Crossed polarized light. Width of field 1.5mm.
This photo-micrograph shows the.
typical texture of th1s very fine-~rained ~ample.
The few larger gra1ns are fra~mented quartz crystals.
They are set in a finely groundmatrix of quartz, muscovite and lesser amounts of calcite, sphene, and opaques.
Photo 8.
Sample S~F-4A 4J'
- Chlorite augen gne1ss.
Plane polarized light.
Width of field 1.5rnm.
This photomicrograph shows a polycrystalline 'eye' (lower half of photo) in a crushed and sheared matrix.
The lif"ht grains in the photo are mostly plagio-clase and quartz.
The large darker grey crystals are chlorite.
Note th~ concentration of opaques in the shear zone in the upper right corner..
Photo 9*
S~mple SRF-5A 42'.
Sheared granodiorite.
Crossed polarized light.
This photomicrograph shows a typical field of view of this sample.
Note the large fuzzy grains.
They are kaolinized pla~io clase crystals which have narrow rims of optically continuous quartz.
These rims were probably pro-duced as a result of the kaolinization.
Note that the rims do not continue along a quartz-plagioclase grain boundary at the lef"t.
The medium grey grains are microperthite, and the light grey ~rains are quartz.
Photo 10. Sample S*RF-5B 17 5 *.
Altered olivine basalt. Plane polarized light. Width of field 1.5mm.
This photomicrograph is a good example of the texture of this sample.
In the upper left is an amygdule filled with twinned calcite and lined with fibrous serpentine.
At the ri~ht is a phenocryst of olivine which has been completely replaced by serpen-tine.
The matrix consists of laths of plagioclase (white) and darker crystals of pyroxene and black opaques.
See also photo 11, an enlargement of the matrix.
Photo 11, an enlargement of
~ portion of photo 10.
S~mple SRF-5B 175'* Altered olivine basalt. Plane
~olarized light.
Width of field o.smm.
This photo-micrograph is an enlarge-ment of the matrix.
Photo 12.
S~mple SRF-7A 116'.
Ultramylonite.
Plane polarized light. Width of field 1.5mm.
This photomicrograph shows typical texture of this rock.
Dark shear zones can be dis-tinguished against the back-ground of highly crushed minerals.
See also photo 13.
Photo 13, an enlar~ement of a portion of photo 12.
Sample SRF-7A 116'. Ultramylonite.
Plane polarized light.
Wi~th of field 0.5mm.
The rock ~s so pulverized that only a few ~rains can be identified with-* certainty--some dark nodular sphene, a few quartz grains and a few aggregates of calcite.
Photo 14.
Sample SRF-8A 155'*
Brecciated quartz-muscovite schist*
Plane polarized light.
Width of field 1.5mm.
This photomicro-graph shows a typical field of view.
Two la~ge lithic fragments are separated by a dark grey shear zone consisting of chlorite, cal-cite, and fineiy ground quartz and muscovite.
The white grains in the rock fragments are quartz which are surrounded by darker muscovite, calcite, sphene. and opaque grains.
Photo 15.
Sample SRF-8B 146.5'* Brecciated quartz muscovite schist.
Cross polarized light. Width of field 1.5mm.
This photo-micrograph shows parts of three lithic fragments.
Two of the fragments are coarser-grained than the fragment in the lower right.
The larRer roundish grains are quartz and the fuzzy material is fine grained masses of muscovite.
A thin black line of chlorite and opaques separate the three fragments.
Note the similarity of this sample to SRF-8A.
Photo 16.
Sample SRF-9A 80'.
Brecciated quartz-muscovite schist. Cross polarized li~ht.
Width of field 1.5mm.
The left hand side of the photomicrograph shows a lithic fragment of roundish quartz grains surrounded by scalv masses of muscovite.
At the right is a stringy mylonite zone consistin~ of pulverized-quartz and muscovite with carbonate and opaques. This sample is similar to samples SRF-8A and BB except for the absence of chlorite.
ATTACHMENT No. 4 K-Ar AGE DETERMINATIONS OF SIX SAMPLES FROM THE SCOTLAND ROAD FAULT ZONE GEOCHRON LAB ORA TORIES DIVISION 1 KRUEGER ENTERPRISES 1 INC.
CAMBRIDGE 1 MASSACHUSETTS 02139 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 Your
Reference:
SRF 58 (175.. 1')
Submitted by:
Richard Holt Weston Geophysical Res. Inc.
P.O. Box 364 Weston, MA 02193 Date Received:
22 April 1974 Date Reported:
14 Hay 1974 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 Argon Analyses:
Ar 4 0 *,ppm.
.01647
.01628 Potassium Analyses:
%K 1.095
- 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.
Ar 40*/ Total Ar 40
- 686
.,645 Ave. %K 1.091 AGE=
199 +
9 M.Y.
Ave. Ar 40 *,ppm.
.01638 K qo,ppm 1.331
KRUEGER ENTERPRiSES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-!176-3691 POTASSIUM-ARGON AGE DETERMINATION Our Sample No.
M-2820 Your
Reference:
SRF SA Submitted by:
Richard J. Holt Weston Geophysical P.o. Box 364 Weston, MA 02193 REPORT OF ANALYTICAL WORK Date Received:
26 April 1974 Date Reported:
15 May 1974 Sample Description & locality:
Sericitized meta-sediment, drill core #SRF SA.
Material Analyzed:
Sericite concentrate with substantial feldspar remaining.
Ar 40 *IK 40 =
.01550 Argon Analyses:
Ar 4 0 *,ppm.
.09410
.09848 Potassium Analyses:
%K 5.086 5.099 Constants Used:
A{J = 4.72 X w-lO 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.
Ar 40* I Total Ar 40
- 891
.791 Ave. %K 5.092 AGE=
248 +
9 M.Y.
Ave. Ar 40 *,ppm.
.09629 K 40. ppm 6.. 212 AGE lnf~+ Ae x Ar40* + 1]
Ae + 1\\{3 L Ae K 4 o
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~
Your
Reference:
SRF lA up Submitted by:
Richard Holt Heston Geophys i ca 1 Res. Inc.
P.O. Box 364 Ueston, HI\\ 02193 Date Received: 22 April 1974 Date Reported: 31 Hay 1974 Sample Description & Locality:
Coarse-grained amphibolite Material Analyzed:
Amphibole concentrate, -40/+100 mesh.
Ar 4 h/K 40 =
.02069 Argon Analyses:
Ar 40 *,ppm.
.01967
.01981 Potassium Analyses:
%K
.786
.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.
Ar 40*/Total Ar 40
.679
.704 Ave. %K
.782 AGE=
324 + 14 M.Y.
Ave. Ar 40 *, ppm.
.01974 K 4o,ppm
- 95lt
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-ll76. 3691 POTASSIUM-ARGON AGE DETERMINATION Our Sample No.
R-2617 Your
Reference:
SRF 2A Submitted by:
Richard J. Uolt Weston Geopbysical P.O. Box 364 Weston, MA 02193 Sample Description & Locality:
Sericite schist REPORT OF ANALYTICAL WORK Date Received: 26 April 1974 Date Reported: 31 May 1971 Material Analyzed:
Whole rock, crushed to -60/+100 mesh.
Argon Analyses:
Ar 4 0 *,ppm.
.03235
.03378 Potassium Analyses:
%K 1.699 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.
Ar 40*/ Total Ar 40
- 676
.807 Ave. %K 1.689 AGE=
256.+/- 10 M.Y.
Ave. Ar 40 *,ppm.
.03307 K 40,ppm 2.061
~H~
(, \\ 6\\ \\/
j( x,.> /
1
- I *l /\\
\\ I
. +
KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617)-1176 3691 POTASSIUM-ARGON AGE DETERMINATION Our Sample No.
Your
Reference:
Submitted by:
R-2818 SRF 3A Richard J. Holt l.Jeston Geophysical P.O. Box 364 Weston, !1A 02193 Sample Description & Locality:
Sericite schist REPORT OF ANALYTICAL WORK Date Received:
26 April 1974 Date Reported:
31 May 1974 Material Analyzed:
Whole rock, crushed to -60/+100 mesh.
Ar 40 */K 40 ;:;;
.01690 Argon Analyses:
Ar 4 0 *,ppm.
.07748
.07763 Potassium Analyses:
%K 3.782 3.741 Constants Used:
A.fi== 4.72 x 10-10 I year 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.
Ar 40* I Total Ar 40
.913
.787 Ave. %K 3.761 AGE AGE=
269 + 10 M.Y.
Ave. Ar 40 *,ppm.
.07756 K 40,ppm 4.589
(
_\\ '
( v
~e KRUEGER ENTERPRISES, INC.
GEOCHRON LABORATORIES DIVISION 24 BLACKSTONE STREET
- CAMBRIDGE, MA. 02139 * (617) a76-3691 POTASSIUM-ARGON AGE DETERMINATION Our Sample No.
R-2819 Your
Reference:
SRF SA 42' Submitted by:
Richard J. Holt Weston Geophysical P.O. Box 364 Weston, HA 02193 Sample Description & Locality:
Altered granodiorite REPORT OF ANALYTICAL WORK Date Received:
26 April 1974 Date Reported:
31 May 1974 Material Analyzed:
Hhole rock, crushed to -60/+100 mesh.
Ar 40 */K 40 =
.01710 Argon Analyses:
Ar 4 0 *,ppm.
.06782
.07003 Potassium Analyses:
%K 3.341 3.267 Constants Used:
A()= 4.72 x 10-10 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.
Ar 40*/ Total Ar 40
.879
.872 Ave. %K 3.304 AGE=
272 +/- 10 M.Y.
Ave. Ar 40 *, ppm.
- 06893 '
K 4o,ppm 4.030 AGE ln["A@+*Xe Ar40*
1]
. A X
+
Ae + A.{3 e
K 40
GEOLOGICAL INVESTIGATIONS of the PORTSMOUTH FAULT (Novotny -
1963)
PORTSMOUTH-HAMPTON, NEW HAMPSHIRE PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION SEPTEMBER 1974
I.
II.
III.
IV.
PORTSMOUTH FAULT INVESTIGATIONS CONTENTS DEFINITION OF THE PORTSMOUTH FAULT INVESTIGATION PROCEDURES A. PRELIMINARY - GENERAL AREA B. DETAILED - BREAKFAST HILL ROAD, GREENLAND
- 1.
COAKLEY SAND PIT
- 2.
LOCH-COOMBS RECLAIMED BORROW AREA
- a.
GROUND MAGNETOMETER SURVEY
- b.
BORINGS INVESTIGATIONS
- c.
PETROGRAPHIC EXAMINATIONS RESULTS OF INVESTIGATIONS ALONG THE INFERRED FAULT A. NOVOTNY'S 11FAULTED 11 OUTCROP EXPOSURES
- 1.
ROUTE 1 BY-PASS, PORTSMOUTH
- 2.
GOAT ISLAND, NEW CASTLE
- 3.
BRUMLEY HILL, NORTH HAMPTON B. GRANITE IN THE RYE FORMATION
- c. UNCONFORMABLE RYE/KITTERY STRATIGRAPHY D. RADIOMETRIC AGE DATING CONCLUSIONS REFERENCES i
1 2
2 2
2 3
3 4
4 5
5 5
6 6
6 7
8 9
10
MAP FIGURE l FIGURE 2 FIGURE 3 FIGURE 4 CONTENTS (CON'T.)
SURVEY CONTROL 1 GREENLAND-McKENNA ASSOCIATES PORTSMOUTH FAULT INVESTIGATIONS-SITE TO GERRISH ISLAND, MAINE PORTSMOUTH FAULT INVESTIGATIONS-GREENLAND TO GERRISH ISLAND, MAINE COAKLEY SAND PIT 1 GREENLAND COOMBS POND AREA 1 GREENLAND ATTACHMENT 1 - GROUND MAGNETOMETER SURVEY, GREENLAND ATTACHMENT 2 - GEOLOGIC BORINGS LOGS ATTACHMENT 3 - PETROGRAPHIC EXAMINATIONS ATTACHMENT 4 RADIOMETRIC AGE DETERMINATIONS
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 I and to examine the 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 I as exposed in the walls of a number of gravel pits at scattered loca-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 I Portsmouth;
- 2) brecciated and partly silicified Kittery 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 I J. R. Rand walked portions of the fault trace as it was defined by Novotny I and 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 I Portsmouth (map 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 I and was terminated as it passed to the west of the edge of the sand pit.
The structure of the Rye formation in the boring I as indicated by orienta-tion measurements of bedrock foliation I is that of a tight syncline which dips steeply to the west.
Five zones of welded breccia were encountered in the boring I the thickest of which included 7. 5' of welded quartzite breccia at 249. 5' to 257' depths in the hole.
The brecciated rock in PF -1 was fresh I compact, thoroughly welded or annealed, and did not show polished or slickensided surfaces on partings.
No mineralization, hydrothermal alteration I shear zones I or other 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 I and showed normal intrusive contacts.
- 2.
Loch-Coombs Reclaimed Borrow Area As shown on Figure 4, three core borings (PF-2 I PF-31 PF-3A) 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 I to investigate the western boundary of a local 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 I and com-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 I exist.
Having no forma-tional contact to investigate for these current studies, Weston Geophysical Engineers I Inc. undertook a ground magnetometer survey to determine 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 I PF-31 was drilled 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) I in light gray banded gneiss and 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 I dark green amphibolite and I at the bottom 5' of the boring, notably magnetic, salmon-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 I however, were there slickensided or polished joint sur-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 I either recent or ancient I is entirely absent.
In sum-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 1 signifying an 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 11C!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 1 and is intruded by diabase dikes.
No "trend 11 of faulting is ap-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 11F 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 I having been removed during construction of a new north-bound lane 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 I along which deeply buried and intruded portions of the Rye formation were elevated 11 *
(Point 110 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 1 no comparable 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 I grading upward through progressively less feldspathic gneisses of the Rye formation into biotite quartzites typical of the Kittery.
Novotny I Hussey and Billings (1956) all define the Rye formation as 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 I defines the geographic location of the Rye/Kittery contact as much as 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 1 are defined on 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.
September 197 4 John R. Rand Consulting Geologist 9
References:
Billings 1 M. P. (1956) The Geology of New Hampshire - Part II:
Bedrock Geology.
Department of Resources and Economic Development; Con-cord I New Hampshire.
Hussey, A. J. II (1962) The Geology of Southern York County I Maine.
Special Geologic Studies I No. 4 1 Maine Geological Survey;
- Augusta, Maine.
Novotny, R. F. (1963) Bedrock Geology of the Dover-Exeter-Portsmouth Re-gion 1 New Hampshire.
Doctral Thesis, Department of Geology, The Ohio State University; Columbus 1 Ohio.
Novotny I R. F. (1969) The Geology of the Seacoast Region, New Hampshire.
Ed. T. R. Meyers.
Department of Resources and Economic Develop-ment; Concord, New Hampshire.
Zartman, R. E., P. M. Hurley I H. W. Krueger and B. J. Gilletti (1970) A 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.
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I I
I I
I I
I I
/
I I'
/
/
I GRf:AT Nt~wburyport pluton
/
/
/
/.
/
/
/
/,/
I I
I I
I
/
/
t
/:;
"~.,. _.... '~.#
I
- I --.
I I
SEABROOK STATION FIGURE 1 Ryt/K1tf*ry Contact According to Billings {1956! lo th* SouthwfSt. llfld Hunoy 11962! to th* Northout.
K*Ar A9t* Million Ytaro S1mplo Numbor PUBLIC SERVICE COMPANY Of NEW HAMPSHIRE SEABROOK STATION PORTSMOUTH FAULT tNVESTIGA TIONS John R. Rdnd, Coruw-Jtiog Geolog1st 0
1 z
3 MILES k=r t====7-
WtllkS PI
\\
lO:l
- ~
!z i~
~\\
JoPPROXlM*TE MEAN OECUNATJON, 1956 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 CONTOUR lNTERVAt 20 FEET OATUM IS MEAN SEA. l.EV'El DEPTH CURVES ANO SOUNDiNGS IN FEET -DATUM lS MEAN LOW WA'tf;R SMO#HIHE S>H.IWH ftt!>'RF!!fHU HI£ 41'Mt>>:INAt£ liNt or kE*It WGH WAt'U TH£ >1£111,. ll*I!(;C' Or JtOf' 15 *PP.i'lOliH:o;ttl.Y 1 flt1
0 NW SEA LEVE:L
-r.1o Foliation: Stikeand Dip in Bedrock Exposures Foliation: Stike and Dip
- '170 in Oriented Drill Cores STRATIFIED OUTWASH
- .;*\\*,,,_.,
SANDS soo'*~:~--
.___,____.__.___....__,. '\\,t
))
/I
"""~~~~..
,~?~
\\,;(!
--.....~ \\\\.\\
SE 100' o*
-100' FIGURE 3
PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION
'l PORTSMOUTH FAULT INVESTIGATIONS COAKLEY SAND PIT BREAKFAST HILL ROAD GREENLAND. NEW HAMPSHIRE John R. Rand, Consulting Geologist
8 N
I NW so*-
0'-
-50'-
8
~
I 0
0 I
N
':J; g
g I
l
~
U..l&..
*..----------n.n. Ground Surface --------------
67::fa~u~~7;ash J over Till
- - **-----*---*- *---------....... fi!!.<!.rock Surface 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 0
~
I 56.900 56.800-56.700 SE
- MEAN SEA LEV£!.
ATTACHMENT NO. 1 GROUND MAGNETOMETER SURVEY BREAKFAST HILL ROAD AREA GREENLAND, NEW HAMPSHIRE WESTON GEOPHYSICAL RESEARCH, INC.
WESTBORO, MASSACHUSETTS
SUMMARY
GROUND MAGNETOMETER SURVEY BREAKFAST HILL ROAD AREA GREENLAND, NEW HAMPSHIRE 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 1s 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 1s 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.
57,200-1/) 57,000-
<(
I
<(
"'56,800-56,600"'"
57,200-r'J7,ooo--
56,6oo-57,000-156,600-33,000-I 0+0 I
0+0 I
2+0 I
2.:0 I
2>0 I
4<0 I
4>0 I
4<0 I
8tO I
6>0 I
6<0 I
8+0 LINE *s I
8tO I
8tO I
10+0 I
10>0 I
10<0 I
12.>0 I
12>0 I
12>0 I
14<0 I
14*0
-57,200
-57,000
-156,600
-156,600 I
16+0
-57,200
-57,000
-56,800 I
-56,600 16+0 LINE 2R I
20*0 I
22+0 I
24+0
- ~
l32,8oo-
~
_,..A..--
+-...
...-... -.,.J>------o---------..... _.
(li.---------.... --o'.......,............ --......... -G-------0""""'""-
+-----
-32/!JOO 32,6oo-I 4+0 117,000-156,600-I 2*0 I
6*0 I
4+0 I
8*0 I
6+0 I
10+0 I
8+0 I
12<0 I
10+0 I
14>0 I
12+0 I
16>0 I
18*0 I
16+0 I
20+0 I
18+0 I
22+0 I
20*0 I
24>0 I
22+0 f
-32,600 26+0 I
24+0 800
~600 ll!
ll!
<(
"'401>
200 0
MAGNETIC
..J
<(
I;;
I 30>0 HORIZONTAL 100 200 300 400 FEET
-!17,000 1
1
-!16,800 28+0 29+0 I
32+0 PROFILES FIGURE Alb I
34>0 I
36>0
-57,400
-57,200
-57,000
-156,800
-56,600 GROUND MAGNETOMETER*SURVEY BREAKFAST HILL ROAD AREA GREENLAND, NEW HAMPSHIRE fer PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE SEABROOK STATION by 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.
GROUND EL (MSL)
- 79. l rt DEPTH TO WATEII/DATE EL.
SAMPLE RATE C~~t~fh. orRQD PRESSURE TEST MSL Deplh~~'l'.n>e II OF Computed and or ADV.
.ll!m.
1<
ft ft No, Reo. ~In/!
'J Graphic pal tO...J om/ooo at
+20
-20 0.5 NX-l
!00 4.U NX-2 100
- 4. 7 NX-3 100 6.~
10 NX-4 tOO 4.1 NX-5 100 6.8 NX*~ 100 9.0 NX-7 100 5,0 NX-8 1M 2.7 NX*9 100 5.1 NX-10 9G
- 5. 6 0
21 25 74 50 56 89 35 62 62 NX-11 100 NX-12 100 5.5 5,0 B.O 12 r I II
!-SO
-so NX-13 100 NX-14. 92 NX-15 96 NX-16 100 NX-17 D4 15,5 13.1 7.3 6.8 43 42 22 70 NX-1R 100 7.9 95 NX*l9 100 10.0 100 NX-20 100 6,0 100 NX-21 tOO 11.2 92 NX-22 100 12, B 88 NX-23 97 18.4 73
' NX-24 100 8, o 65
~O
- NX-25 100 NX-2 96 17.4 R6 NX-2 100 7.2
?3 NX*2 100 5.6 95 1](
NX-3 100 24.4 75 NX-3 99 5.6 92 NX*3~
97 4.0 95 NX-3.
100 G.2 90 NX*a4 100 5, fi 100
~
~
L; I v e f7i TOP TOTAL DEPTH __
2,_7,_,6:.:.* O:;_.....;fi"-
DRILLED BY American Drilling & Jlorlng Co.! J<, Allen 1~. 7
!t I STII!KE, !liP F = Foliation
.., fQ J tJo.int a::<
C = Conlan!
8 ::J II
- ll<oddtng Ol S ~ Sllol<on * !A" OF ROCK N37E, 74NII. I' N60E, 32SE S
~~~f:il~ ~
- N50W, 4NE J N?SE, ANW,J N33W, lANE J N~2E, 7ANW f NR3!!:, J2SE,1 N fiW, lO!IF. J
~I.Ht: P.'l~~ :1 NISE, 73NW F N20E, 62NW F NIOW, 77SW F N41W, 6tiNE S Nfl.flE. fl:INW f' N!i6E, 74NW F N33F., 69NW N47E, 35SE J
WCCEO flY Soli-K. l'olk* l\\ock-J. R. Rand SOIL AND ROCK DESCRIPTIONS
{Weathering* defeotft, t'to~)
'"""r rusty Slight wx on foliation and tntnt*
Slight wx I)
Minor rust Slight wx Moderate wx F'resh anrl harrl.
J,r><wl minor rusty nnrl flurrace wx <'l:Cf('ot~ on toinls nn,t Rome partinl(e:. Parting!!
not ollckcnslded.
FroRh nnd harrl. Minor (Type, texture, mlneralOJ[Y 1 color. hardnese
- etc.)
. z::::nrag 0UJ8 - senRe ()
- .:_: ~ *-** lflOVement westt side up to
- .:,,':_...'the CMAt-syncllnc to west
~~f.
Rye formaUon.
Fine to
,.*,.*.*.~ Wclflt."d very flnc-grntned. med- _
~"l:-i::... hrecc!a tum dnrk gray, Thinly
==:J~eldod and evenly foliated, met*-
- ;_:.; ~ *. ;.tliab~u 1 e volcanic, Fine fcldspathl~
, ~.-~- ;~ 1 1 quartaitc. nreooiatcd
-:~ ~
- anch~R
!:~~~~:.es wolricd with
- ~-:* :.
Moderate wx ru:;;ty, vugey lOnf'::t n;~<
!loclntcd w1th jointR nml
~"'!"~"' ::--:- Gne!Rs pRrtinga nof sllclwmlidC'rl, :--:--""*.-*
'llll:..:oo D
!)
Minor rua!y Slight wx Minor rusty Mode:t'~tte wx 85° joint Calcite' coating D
Mrnicr:dc-wx Ruely stain u
F'r<"s.h nnil hm*cl throu.~h out~ Jotnh; ami partings:
arc gi:'nora11y clean. Not wx. Surfac£'f': arc not
- Ucl<onoldc~.
f'rcsh nnrl hnr1l through-Minor chlorll<> out. Joint< nnri pnrtin~"
l)yrltc coated f\\f(' clNm. Nt't f\\lickon..
[)
On follollon Rl<ir~. !Ins nnly very minor tcmlcnny tn pn rt on fo1intton.
Ry<* (nrmatinn* Prerinmi-nantly flne-grai:IC'rl, dnrk_
gray hornft*lslc Achl~l.
\\'t-ry denH£> t('xturo. Intttr layered with zones nf qua rb.o~e, l*'cldsp!tlh ic gneiss, medium to con r!'l~
grained. light gr;lV. All-contacts arc tight, fu~cd.
Somewhat tramritinnal.
Inh~rln_vcrcr! finc-grninC'rl fol~spnthlc gnolss. J,lght-:
grny
- nnd rtm:~-graincd.
dn rk gray hornfe I* lc schist.
Scn"'c n( Fomr o;wn drag-folding 51-U~gm;t~ thnt synclina is to the west.
Rock fahrlc o!!<<*t locnlly by wclde~ m lcro Inuits. -
Rvn fnrrnntinn.
P.n*rlnml n\\lntlv finn-grniru.~o. dark grn)' (lmrn!ololc) !eltls- -
pnthic schist. VC"r;,* hnrd Almnst mnsRivc texture.
lntcrborl!lc<l locally as shown with fairly pure white quarbllo bed*.
UyC' formation. ns nbov!'.
!'alrlv oven tv, th!nlv laminntC"d throughout, nlthou~h lnm inoc !non Hv nrc wnvy, some complax-::
lolrlln~.
N
- Stllndard penetration reololanoe, blow*/ft NOl'ES SEABROOK STATION Reo - Length,...eov*rwt/len!llh aond, 1 RQD-Length of oound oore 4 ln. and longer/length cored, 1*
!i 8
- Split apoon oample J Grnundwoter S U
- UDdllllurbed oampl01
-l s - Sllolby tube N - Denio""
D F-Fixed pta ton P - Plteh..r o-O.tAorberg 0
- OEI
- Drllllnr bMtk k - Coolllclenl of
- Weathered, WlU\\tberlng
""rmeabilltv n No day,.; fJTI'$t(*nt; !h**i'"l'f<'lrf' no water ormtf!nl~ WPr<* dutcnntn(*d.
x "' Orl('nlt:d cort*
I*IIIII.IC Sf:IWkF: C'OMPANV'~lt' NF.W IIAMI'SII!RE t Y ~NKf:f: ATOMIC t:U!C'i'lliC COMPANY Cl~!!!~~*--~~
Dntt*: Mnv 1*1* l!\\74 Project 7286
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 EL.
SAMPLE RAT!
c';';~i~llr orRQD PRESSURE TEST MSL Depth Type N
OF Computed STRJKE, DIP F
- Foliation
"' !Q SOIL AND ROCK DESCRIPTIONS
&Dd or ADV.
.&1!!!!.
k
~ : ~"o':Nact
- 5 ;J (Weathering, detects, etc.)
{Type, te:Jrture, mineralogy, colo-r, hardnefi'S, etc.)
ft ft llo.
Reo. imtn/f Graphic pal 10- om/oeo B = Bedding U iii
-40
-50
-BO
~.~~--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
!NQ-3a too jNQ-40 96 E-t 70 jNQ-41 98
~Q-42 !00 rtsc
~Q-4.1 100
- "'Q-44 93
~g( fQ-45 100 f'IQ-46 92
~0( ~Q-47 tOO rQ-48 100 NQ-49 JDO NQ-50 100
- -'<2 NQ-51 100 NQ-52 100
- --z3 NQ-53 tOO NQ-54 100 NQ-55 100 NQ-56 98 NQ*M 100 NQ-51 100 NQ-5! 190 NQ-r.
100
- 4. 8 89 17
~~~~. ~~~~ J on some joints and part-
. Gneiu Prcdom!Mnt!y qunrt7.l\\c, Vt:'ry finc-~ndnen, medium grny. F'ni rly mass tve.
t7 N32W, 2RNE J
lngn, No polishing, i<! 4-l.ocnl tntcrbeds of fcld*-
- s. 0 87 N:!2E, f>2SE J
- ~
(L N1RE, r.osr.
J "h
pnthic gneiss. Fused fault N45W, lONE J
g F'
C:.-
alcltlc plune nt 155. 3'.
5, 2 190
- 5. 4 91\\
11.6 71 e 5,6
- 4. 0 6.0 7.8 18.0 95 50 93 58 0 vI I I; riL 52
- e. s 100 3, 6 100 4.2 100 8,0 100
- 14. o too 5.0 40 4.0 98 5, 0 97 7.0 45 8.0 33 6.6 43 6, 0 33 NtSW, 28Nf.
J N65\\\\', fi1SW J
N40E, 615!(
J N35E, !65E J
~~g~: ~~~~
~
N15E, ~5SE
~*
NROE, liSE S NOOW, A5SW J
N 5E, 86SE F
N60E, !SSE S N21f:, 38SE S
N20E, 75SE J N13E, Horl7,, F N7ijW, SNE J N25E 1 Vert F
NJO~;, 75SE I*'
Minor ruaty
()
D Chips:-slight wx effects Sllght wx D
Pyrite xt~l*
Chips-fresh Slight wx Pyrite Slight wx Not wx Vuggy Chlps-sll~ht RUrfacc wx FrcRh nnd hord. Joints
~.
..~
Rye formation.
Vi ne--gra Lncd dark ~ray (cldspnthio quart-zite~ Fairly cvt>nly 1 hut vaguely foliated.
~::ai~~~:~:::;r;ent~.
- ~~~
Partin~s arc not pollnhcd*i~~
Fresh anrt hll r'fl. Joints o.nrl pnrtlng::~ ::<how only local minor wx cffectfl, Not slickeneide:d or poll* hod.
FrC'~h anrl hnrd. f:xoe1l-cnl drilling.
PRrtln~s In diabase break ncross core. Not jointed. Not wx or sltckensldefi.
~
t.:+/-
~
)uartz!tc
~
loneiss Rye formation, Rf> aOOve
~"'*
with loonl1.ones nf £o1ds-
.,;;.~*
pathizeO quartzite nnd feld-spalhlc guelss.
~:~:":"~
+
~
~\\'(*ld~rl brcccin nl contnef f!';.. { 99, R' Fused contact rlios 1\\0° r t + !Chill Diabase, Medium-grained t-r r dn rk gray with white pheno-cryst spotting. Notably
- calcitic,
-t-'1"!'
~ t' 't' f"t'!"'
. t ';.~
~
Diabase, as above
- FrN;h and hnr1t. Onl}'
~~{~
minor RUrface: wx offJ'ats j ;--;- * ~
.~,
on ioinl'l nnd partings.
, f7 ;-
lB. 7, Fused contact Ryu formntlon, Fint<-
graincd, medium to dark gray~ Feldspathic, evenly foliated throughout, Not slickensided.
>'~~'Y.,..
Fresh and harrl. Only
~~~
J....;.....!...
\\*~~
~
!==:~
~~
minor tlurfncc wx effect.-;
.,~
on Joints and pnrlings.
~--;-
Not sltokenslderl.
- ~;77
~*rcsh and hard. Only m lnor surface wx: cffcctR
~"*
,,a*A A'4*
A~.;:::;,
- .il"".O.
Rye rormnlian. Fine..
j(rnfncd~ dnffi grny.
E\\*cn.~
foliated lelosrathic quartzite~
({ua-rt7.ite*
Fine, mE'clium
~roy.
49* 5 t
FU!'u:~rl contnct
,0' W~1docl breccia. (~artzitc frrtgn;cnts, nngulnr with som1 vcinin£, Ann<'U leO rock throutiftou!
unrt?;lte Rye (onnntion. Predomi-nantly fino-grained, dnrk gray feldspathlc quartzite.
Diabase
- 100' NQ-6! JOO 1:"2?
N42W, 50NE S
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 NOTES SEABROOK STATION Rec... Length recovered/length cored. %
RQD -
Lengt~ of sound ooro 4 ln. and longer/length cored, ':t
~ 8 Split opoon.,.mple Groundwo.t..r U
- Und toturbod.. mpleo
§ s - Sholby tube N - D<lnlonn F-Fixed piolon r - Pitcher 0- OOIA!rborg G-GEl D
Drilling break k - Cocffiolonl of wx
.. Wflathered, ~*therlng permeabtUty I'U!ll.JC SF:RVICE COMPANY OF NEW HAMPSHIRE Y 1\\NKF.f. ATOMIC t:u:r.TRIC <:OMPANY q~.~!!~*-~~
J>rnject 7286 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 l'RICSSURE TF:Sr OF computed AllY.
l!E!ll k
mln/f
'i Graphic pRJ 10-lcm/sec STRIKE, Ill!'
f = Fnllnt inn J
Joint C ""Cont..1cL
!l; neddlng SOIL AND ROCK Df:SCRIPT!ONS r'l"yPE", texture. mineraloJCYt color, hardnNHIII, etc.}
llm,o'r---,----r-~~-~-~-------~~-r--------~~<"~,,.~*-~~T-~-----------------------------------------------------------~
-¥-
10
-zo l-30
- ~n 1-10 F-In
'10 I-nn r.5
"'""' m nnr.:
NX-1
- ,n 2, 7 30 V7/
-70 777 NX-2 91
- 1. n XX-3 flf'l*
3, n 'Ill
-*o V//;
-2fl XX-4 100
.1, 0
- "90
!'lX -5 100
~h 7 V7;;
HO 1\\'X-H 100
- !.4 32
~
-40
!10
!\\'X-7 n'
- 1. 0 31 XX-'
100
* 9 li:l
~"X-9
!OO
- l.lol' 52 121
-IW l>.'J(-11 100 r,. 7
~0 13
- x-n o*
r},.'l VI;
!<X-12 07
- 1. I
- 10 r;;
.:'l-\\'1 N
Standard Pf'OOtrntlnn " i"lnnCI', hi ouR *It NO rf;~
Ur<* - lAmgth rt"CilV<*rt-d; length cnr<'d.
ltt~O-l.i*ngth of,_ounrl <:ore 4 in. aml lon~"r.'lPnfllh con*d, ~-;
~ ~
- Spilt ttpoon llllantple i-I;rountlwntt-r tal tt
- Hnri1Atur1W'd ARmp1N*
~
S - *"h*lhy hthc N - OPn!onn F-nxt*tl plslnn p - J'Hehrr 0 ~ OaW..-~tl(
<: - ca:1 0
l>rtllln<< hrt*ak k ~ Cn<*rflt*i~ni of Wt 1 A:lhrrt>d~ wtlntht"rin~t rwnnrnhi11tv r.. ~
22~
lY 1 ~mi.,:ram J i\\forlrrelt:< wx l
~ll~hl In mndrtalt> \\\\'X thrnulrhnul Minor vug~,.
~
-~ ~llohl "'"
- I \\*uggy I MrlfiC'l"111<:' wx
~ Sl!~hl WlC
- 1 :-\\tn:ill
\\\\ pc-rvasln* vugq throughout C.nr(> <"Onlnln'l numl'rous qma l1 V\\1,1:!<1 Fre~h fiYTHr-xtnl'l Sr-o.*prt\\ wx
\\'\\1J..'l.{\\'
Pvrlle l:pMot<'
- \\llnor vn~g-\\'
l"pitloh*
- -;ul>irt*! 10 slighl wx thrnu~-thntll nn(l par;c;;
rt*;Hfifv nn foHn! Inn..
f'ot'<' dmtn~lf'rb:Nl hy rli'iks: l *'2" In 2 In lf>n~h~ "Tfnor l.nn J)lahns(' and J.,.rnPI.;o.; lmul1lt*rs ( '1)
/.:)
'--'--' !'.> 70' np 01 rn<'K I'!]
!Jrag f<nc!><,,
Bonllc*<l ll!!:hl om! mod*
rnlfling hun g;*:n. t'im*-,l!rainf'd,
!hinh* Inrnfnnif'rl, Fu-...NI din-ru!4B' !o)!aininl.:" nn lolnl"* Nnl sHclwn-
'-r*-r< '1-fl.!i' Cm\\ltH'i hrold*n, Snl... lkkt*n*drl<*rl..:
sidc>cl or poUsh~rl.
~::: Lt" "1.5 1 p~:;;;;~;* hr~;:;~. ~~{
1
...;ilckC'tH;hlcrt
(~Uitfl7.
Suhj('cl In "lhrhl t\\"X
~
t~tlart?.
I hrouJ,;hou! on folinli on _:... _.
('hnrAciPrl7.£<rllw JWr-
~
vash-'t> sma n '-'11!-!s.
-~ ~
Pnrts nn fnUalfon al fln<*i"s* H"ndPflto thinfv lamlnalt*rl li~ht and nwdhnn l/2" In t inlt*rval.o;~
PF-:!.\\
~rn**. l'hw ln \\'t'l'\\ Unl' ArainPd, lt*ttl... paHli~* :with lm:*nt:
qmut:tltlc* or C"ht*t*tv hamHng.
rkfinHrh* not J\\HI<*r\\ t{uari-_
Y.it<*.
l'rnhnhlv mt>lamorphnst*
H<*f"<lnW'i tll<H"f' (pltl..;.flJilhk
<!I 1111,..-)* ~
Fri'Hh inlt*rrndlv, hut
->Uhj<'-CI In \\'UJ4 flt*n*lnp mf'rtl ihrm!)!hmll, f\\l;n llf' wx <>nlcflt.'.1 \\
.Jotnl a net parlfnl!s nr.:* no!
"ll{'kl'tHhlf'li.nr P*")t-1-.ln*d.
- . --~ '1119,, llrnlpn rnntocl Xm T*~re..;h anti hal*! I, 1 **nl\\' 1 1* ~ t-minnr !neal...;nh!ll<m l....,._ -
<*fr<>t'l...:.
('tn~<'h iolnit~rl..lotnl ;-; ~ r<'
nol <di<-h'n"'ftl*'fl or poltshPII,
'i '
I
' i.
IHniHlst.*.
Fln1*-nwttltU1\\
flialms~*.
'\\lt*llium-~r:thltorl.
do.t*k ~rar.
~la;.;slV<*.
~nmt*
10Cal rwrplwrilk !t*xlun*.
"'mall phc-nncr\\'"!~.
SEABROOK STATION l>llJ<!.I<' Sf;ll\\'10; t*OMI'ANY <W NEI' llAMPSHIIIE YM;t\\;:f: ATilM!C f:L~:CTiliC COMPANY ProJect 7286 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 --.&.3 Jlln~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 EL.
!!AMPLE RAT! C~~HJ.h. orRQD PRESSURE TEST MSL O..pthb'Type N
OF t:ompuled ond or ADV.
ll!!!l k
ft ft No.
Rec. bln/f
't Graphic pol ln~4cm/oec nn NX-lr-100 1!)
NX-lr 100
~
31 41 t:'"tM NX-17 62 7,!j I?O NX-tA 9R 7,!;
51 NX-19 34
~.o 12 V/1
- -tAO "'X-20 100 VII 1;/;j I>'X-22 100 9,0 I
NX-2*1 100 N'X-2:. 100
- 2. 0 4G t-.'X-2fl 100 2,6 32 f-22 NX-27 95 2,1 I\\'X-2R 100
- 2. 0 77 t-.'X-2.
II 4.9 I/
II
~>'X-:r 1~0
- 1,7 2.1 rt /
STRIKE, DIP F ~Foliation J
l:: Jntnt C
- ContAct 11 ~ lledding.
0- ""*
20'
- w" 20"
.rul:r 19, 1974 LOGGED BY Soli - K. 1.. P<>lk* llnck - J. ll. n,,nd SOIL AND ROCK DESCRIPTIONS (Weather int. rlofectw, etc. )
(Type. texture. mlnt!fralogy, color, h*rdne111a, etc.)
CONTlNm:n I' 110M l'IIJ.:VIO 1: l'AG'
[~ C"hipa t Vuggv j
1 nrll!in<<
j' ht'tlcr t\\
f.('$!\\ v.~
r
\\~
Chips
,~ Vug,.zy 1 ~~ria lerl jolnt l Not polished 1 Rod* dropped
- ! Wx z.ont* 1' J Pvrllo
-1
~lll!hl wx j Sl!.-hl wx
- ~~f~~~*
I ~leep folnt
- H Rough surfacf' 1 Vuggv 1
1 Chips
- . Minor vurrgv I
- f. Minor vugg-v r Chips
~~ VUJn.,'Y
\\
Chlorlt~
I\\
I t
\\ Sl!ght wx r
)*
! t j
~
I.,
i fienrrall\\' frt"'"h lntf'rnallv.
<.;omp lm*n.l rnlnnr VUJ.'r rl<"Vf'lnpmnnt.
,Joint" and partin~~ nrt' nnl o:;:tkken'>lded.
i :..::
Quar!zlttc Qua:rt7.ftk C:ht*bts, ft'ld,.f)ttlhk, loC"Sll_v quart1Hic~
Light ID tnt>tltum Rrav.
irrt"t,ru!ar gn!'l!\\soslle. -
LocAl!\\' tot('.h(slnsC'~
Medium gra inerl.
Falrlv frr<h
- "* j:::" -** quar!z.os*
flecorr.P~ t1a rkPr gra \\', -
nn('l" gra ln!'rl lrrcguJa r1 v f'ollalcrl ;;;chtst, feld*f'Aih!c,
~omc minor local vug 1---:_ '?
development.. Not slJckensfd('d~
F'alrlv ft*e;.~h Drag Folds:
Schist, gnC'f.,.stc-
'iomt:> minor vu~1.rr t-t>x-~ " "' -...
felrh;nnthlc Rl'l ahovr-~ -
tur~s. and powrl<'n' wx
............ ~
- Approximately 177., J' )lt"t'"ittmc-w*x
(*ffccls on inlnts and It..., :.:-:
contact~ r\\ot silckC'nqldt!d.
parting'~*,Joints art:'
no! polished.
-++',:
1 1
fllah:t!>C!,
Dnrk g-r:n*,
m~ritum grained,
- t 1~ +
f!ravH\\' 11"1 finP )::(raln<Kt Qtllf<' fresh int('ttmfh*~
<\\orne minor loca 1 vug t C'X1Ut'(>H. :\\linor sur-face wx nn iotnls.
.Joint!'! no! pnli!-thcd or sllcken.sldrd.
i...,. ;- ~
~L~~~~I) 1
~t lop anrl bottom, I:-; ~ 1 !lii, *I' I*'URt'd conlacf.
'flfr~*s paral.lt>t
+'
!g ro1Jsltpn
~; 1 -
MC'tnqunrtzlif' to mt.'tn-
. _;~ *:--
s:IH. rf'lrlspn!htc, fint*-
~rnlnf'd, chf'-rt\\', mcdiun":
'!tat".
f1x"nlh* gn<'f~~k.
Bnndf'fl ic'<tUt't' of flm*- _
mt*tllum Hghl grat'
, ~.::.. *~ Drng FolriR (f'ld*qmthic cptortzHf:'
wflh dark. A"ra\\.', \\'t*n*
ftnf' ~r.ain(lr1 du*rt\\' rock~
t\\..1:nt1ln~ I" con'lrnonh*
l*'n*-.h ami hard.
~mw
- ~, nra,.; Folds f'Y('O In '>IIJ,!hllv \\\\"0\\'\\'*
m'nor local \\'Ui:!- rlc>v!*lofl
.. ~
lh*comr~ somC>whal men!. l\\llnor *mrfacr j ~- --*:
... chistnsf', grccni"'h wx cffecl ~ on joint*>.
j.:::_:--.. ::.:_:-:~
!ln~w (lim(~ ~iHratc... '!)
No JlOIIshlng nr sUckenRirif!"l on lolnts. ~~ ':-
221. !'I Contact hrolwn. Xo! s1kktm.,idf<'71 Ft'e>f\\h anri hard; drlll'l vcrv W!'ll. Onlv mlnor llowrl<'rV wx cff~ts on jotnls. No evtclcnct' of mov<>mP:nl.
[*'rf'sh and hard; drill~
W('lL. Onh* n*rv mfnor powri('r\\* *mrfa("t' wx cff('C"f!-1 on snmt* ioin1~
anti partinl.{'"l. Not t<; ll<'kcno;:ldt'rl.
Frr"h anr! hru*d; dl'lll">
wt*ll. No! "llt<>l..(*fl*,.Jdt*tl oh jnfrH:;.
f,'*,-, Chill Dlahnst*, cal<::!!!£,
~ t~~-~t- ~-
medium ~rninP<!, <htrk
- + t ;
gta,\\"-. ~caltrrrd phf'no-
'lr t,
+*,.. t
- -j* 1 I" I
+ r; 1 t-I
- 'I Chill crvsl s.
Otahasc, calcilic.
medium ~raineci 1 darli
~~:r~na~ae~~6~n~~~h nc-valnlel<>.
2:19.9 Fu~t-d contat't. Dips! f)H" Fcld!tpathtc Quar!Zhf*, fint*. ln£>dlum PI*'-2C
~\\t.nrltit**
gravy "nm.:'\\\\'hal !Pici'i-nRthl<
- fu:SNI eon-lac! r-mpllihnlltt>C}>.
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*
\\'dnin~. llnrtl ruck.
Hrc*tth" ;w,*n-.,..l!:rain,
(,t"l('nl.-.* m...... (lf fin**
~rldnt'll. mNihlfrt tlark gta\\' qunr11.fiC'~
271,1+--+-+-+-+----/ -- r------+---__:."~*"".f....-1f"'l+--------------
~.o T!OTT<lM 1 _.: *-
.:...' ---11.-..----*---------.;:~
N
.. Standard penetration n""Ritttanee, blows/rt NOTES Reo - Length recovered/length cored, 'J.
RQD - Length of sound core 4 ln. Mld longer/lengtll cored, 'l
§ S Split *poon.. mple
¥ Groundwater
"' U
- Undt*turbed *amplea
~
S - Shelby tube N - Denloo.n F-Fixed pleton l' - Pitcher 0- O.terberg G
GEl D
- Drilling break
- k - C(>(>frtclenl of wx
- Wi?athered, weatherlnf(
~nneahillty SEABROOK STATION PUBLIC Sf:RVTCf. COMPANY 01' NEW HAMPSllliiE YANKF:F: ATOMIC ELECTRIC COMPANY f>.:tli'! AUCU'l'l 15 1914 Project 7286 I LOG OF DORING PF-2
BORING LOCATION flr(I"Rkfa'll lUll Hood Qrecnlpml New He mpgh! rc INCLINATION ~
HEARING DArF: START/f'INISil
-~-Jui!!l.LY.o.2fl:!J*c..1!;9!!.7:i.4 __ /
,July ~0 1971 CASING !D __..;aulmn.._ __
CORf: SIZE _;2:;:_-1:.;:/.:.:e..!tne.:*'--
GROUND E:I. IMSL) ~
Df:I'TII TO WATf:lliOATF.
EL.
SAMPLE RATF.
MSL Depthl'l'ype N
0 F and or
- ADV, fl ft No.
Reo. lmin/1 TOTAL OEPTII _.:,:f:,::tll.!.,OC---l!.fl Dllll.!.!:D I!Y
,\\mcrloan llrl!llng & !loring Co. 1 K *. \\lion
-2,4 rt ;
.Juh* 29, l!l74 J..OC(iED flY
..:Oil-K, 1., Pnlk; Hf'ck-.}, H. Hand SOIL AND ROCK DESCRIPTIONS (Weatht.'ring 1 rief<!'Clt'! 1 etc.\\
fl)'~, texture, minPralog;.*,
aolnr, hardnPRR, etc.;
lflJ,Rr---,----r--~--~--~~------~h~O--~-------r-~<*~-<l~lnCC~*n~n*I~A,*-r,-------------------------------------------------------~
II 1-lo 140 20 1-ao
- 20 f-.;o V/;
!\\'X-1 n~
.J,O
~n
!\\'X-2 I no 1,1 ljj;
- ...'\\0 07'
- f.
Hust\\'
'{ll~hl W>:
- r. Mlnnr rusl I :lit<hl \\\\'){
70' lliYT'TOM OF I!Otllt;G 1-f*
f-I 1-1-
1-N
- Strm!lnrtl fWnr*trl\\thm rt'.<tHct:nuw.
i1ln~J.*s * [f Bt!C IA*njl;th r('C(}Vf'l'NL'l(*nt(lb l'nrf*d. :
0Ql)
J"*nS(th or I\\OUnt1 t*orr 4 if\\, 1\\0d }OOI(f'r' h*n)!th J,'llT<<'d;
\\\\ \\\\'a... ht*tllhrnu~:h.. nil fi*lll rr.
~*l
'>Onqdc--. IA!*I'II~
e g
- SplH ftJlOUM ~suuplt' i
(;rf)\\tntl\\\\fltt*r
~ tl
- llnrli1tturtw-<1.'inmp)P~
L)
S - Shr!hy tuhr F-f'ixud platnn 0- O*terh<-rg N"' UN\\ill*m P
P!tct\\Pr
(;- f;t;!
D
- Drilling break k - (._'O(>ffiru:-nt of
- Wrathcr('d, weatht'ring pcrmt:>nhilll'f Xol{':.Jninl" rmd ~~arrill~':o:
no! 'ili<'kt*n"lllptl nr polish!'!!,
OrWi!4s 1 nwtli11m lighl ~t'll\\
mf'dium t'nar"r-grni1wd.
nrwi-..-.:~>1!\\l:ll'tli!l',
mr:rti11,m (l'tl'l, J.!l'l'l'n, fitH'-
~ -
SEABROOK STATION l 1l'ftLH' SEH\\'H';.; t'OMPANV Of' NEW IIAMP.;:;nmf:
\\'ANKEf: AJ'flMIC ~:J.E!'fR!l' COMPANY
~
.\\IW1J>;.! 1 I 1!171 ProJect 7286 nf I LOG Of' ROlliNG
1\\ro*kfast 11111 Hood BORING LOCATFON Greenland New Ilqmpshlrc INCLINATION _
_,:!c~.l_' _
llEARING ~
DArE START/FINISH.rutv 30, 19H 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 EL.
SAMPLE RATF c':i~t~!h orRQD PRERSURE.TEST STI!U<F:, DIP SOIL AND ROC~ Dl'.'SCil!PT!ONS MSL I N
~~~ir
~I Comput.ed F
- Foliation w ~
J =Joint to ;;j tWea.thcring, defects, etc.)
(Type, texture. mineralogy, I and or AD 4 k II Rec.
'1 Graphic P"'
10- em/ace
~: ~:~~~~~ 8 iS H11.A 100
~
- 1)
]0
- 41l
.... 20 1- *o 1-40
- 20
~'\\0
..... fl(\\
l-7o 1- ~0 TOT>
OF HO\\K
-20 NX-l 99 21 11
>ll~ht wx l\\'"-2
>10
]0 VII
- r 7-
- X-1 nn Ill
~
Chip" r\\X-1 Jon 0
\\1mi<'r!\\IC'
~~~~;,
100 0 II I I E
1-no 100
- o
~ w.~
~
,. l\\flnnr vugJn~
r Chh1*
~..-x. :-
]00 26
¥
~~~~htiY
'~:-(-'{
-~
31 vuggy
!:In
~
_,;o NX-~ ]00 I I I
~'X-1
- 7 VL
~
SH~ht wx I-ll ITX-ll 1flfl
!).6 26
~
~lil(hl "
1>>'X-l 100 4.3 Jr. r; /;
'Hit{hl V."X
[
rhl*,rlt('
'{lf~hl WM 12
!'IX-1
]00 1.2 Wl
~
t~O
<ll~hl,...
N\\>l
!00
- t,n 20
\\'u~mv n
l
)fin 7.11
~ ~Li
('hlp~
'>;'(,, !00
'* !i
./-/.-,
\\'ul!~\\*
I. ]()O o.o Chip~ 111 I :1.1'
'Ill "illf{hl \\\\"X NX ton n.n
\\'Uj!j..."\\'
J.ll
-7!l.~<
N
.. Standard penetration re1'!:l~tancc, bJowR/ft NOrBS Rec - Length rccnve red/lenglh CQrcd, 1 RQD - Length of sound core 4 in. and longN*/lcngth coted 1 7
- 1) WA;.olwtl lhrnu,p:h o.;nH 0-*Hl rt. nn
- ~;a mph*-> tak('n.
0 s
- Spilt "poon &le i-Groundwater 1:'i U Undisturbed oample*
- l S - Shelby tube F-Fixed pl*ton 0- O*terber~
N-Dent*""
P-Pilcher G-OEf D
- Drilling break k - Cndficicnt nf W)C
-Weathered, weattwring pennPahihl)'
- 2) No drill times available.
cn1nr, hardnastt. etc. i
- -~~
(ivn~"'r~tll,\\' fre-.h
~'~~ :~ UinbMi<'
Jnh*rnallv. -\\uln('t!
~
to :;Hght wx ntl J>(*gnmtilc*
<lnt*iJ.t!{* rpmrt><tli('.
cimwtv-..;)):l('r*t! lnin!:.;, ~
'-'mnf'what mntlir*rl lh:.hl
.Joints ttntl parlin1;s Diah;u;c>
Jn nlNliUIH f.!l"H\\ ~
II!)**~
art* not }\\ll{'kcnsi!lNi J.(Mtint:d rorl;.
[Jll':llh or prllfsh('d.
('nr-P
-*- ll;:1r!.. ).Crnv A"f('l*ni~h linc.r* 11i111<*
hn*<lh.A;o:tt <*lmn*
... nkah*-.L lnt<*rvnl~,
~~~~.~
1Utlf't1.ilf'
..:..;~-::
(;nt-1-*"~.,, 11 1 ~t-:*1 hi I'.
C:Nwmllv l:rl*:d\\.
lneulh h:ttlfli*tl.
!I('
"\\U~hi r;owdt*J"\\' W'\\
t*tlllH'"i ~11\\<' hnl "'rhi~l~t.,i' I
- ~_,-7.
rfll*t.*l, on ioin!l'l nnd hM* I'U*Nl,~~thn:w, t'hill 1om:
partin~s. K" ~lirkt"n-...;:
.,.iller;: or pnlf "lwtf joints
~
l>fn.h:t:.it*, dtu*l, J.:.rll\\
- Unr l". -
tn nwdinm ;.tt-uint:d.
r +
~
J>ht-r'tfl('t'\\'SI~ \\!,"(,
\\"UJ.(~\\';
Frt'~h. wllh.. liu,h1 *wx rot*k t~ n,\\1 t*akitk.
t*ff<*t*t.., lt){'itliY on
'"" +._
ftt){'h. h mag-ncli!',
iolnt;.:,
SOIIH' -\\Ulall
~
\\'\\II.!" in t!l:th:l"'l' Wh(:'l"t'
~~~~~
1111.;1' Fn~!_!:!~IJ~~:!-
,,lwmwr\\'1-lt"' llL.,~nl\\*t*tl.
J)Jal)!lSt' Nnt.. n,*t.<<>n"ll*h*!l nr nark Al"H\\', t1Wtlium tJuUsiH'II.
r:-
i'rlilr*w l!rainl'd 1 mol!l('tl lc*xtur~*, :\\l;lt!n(*lk 1 nnn-t t,.:!
cnkHit:,
l',*t*<ih :md h:lrd inil*r-l:!.>..L..l:U:.CU.L:lllllacl.. UliU.<>llll:._ _
n:liiL Pal' I~ l':t"H\\ nt'l
<)unrt?it1!' l,.'l)<'i"ls. 1hinh*
lollallun. m:1hint.: fn1*
h;mdrtf. ~.trt*elii"lh ling,<*
'0 1 1HIH.
Pari inc.; aml
'I h!n I C'RIP-'-'i!it*i\\t(' rn<-kl.
1ninl"i :lf'l' nnl.... lkk(*n-quar!t Fin('-J!l'ninf'tl.
Hnnflin~
hi!nflit'IJ..!
"!itktl or pnlf>.:ht'il, 1.:,.
~.n~nl In imlt*
- -,ou !lip (t'l ~:}7'\\\\',
I,('l(":tllv ~nmt*~
whar \\'UJ.!t.!'"*
SEABROOK STATION P!'T\\l.IC SERVICE COMPANY o~* NEW HAMPSHIRE YANKEP. ATOMIC EL~:CTR!C COMPANY C!l~~~~~".-.~~
ProJ*ct 7286 l'AC:I-: __L_Uf ____....L_ I 1..00 OF HORIN<.i PV-'l\\
BORING LOCATION J'\\rraJ.;fa-.1 Hill Hmuf 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 __
GROUND EL tMSL) --l.li.l..II..J Df.PTH TO WAT!:IVIlATt.
EL, SAMPLE RATE WATER nrRQO PR f:SSUI!F: rEST CONTE )IT MSL D<pthl'l'ype N
or Computed and or ADV.
il!!l!.
10- "/oec It II No.
Rec. lmm!r
'J Graphic p*l M
///
~~~-!,
!Oil *.4 rfll 1NX*2 100
~. R 20 r-1!1 l\\~-2
!00 16.0 I 1/;
NX-22 100
.1. 0 1\\"X-z.
]00 13,0 I R
/;
100 N'<-2* !00 4,.
2~
1-.~-2~
97 7, R 43 17 N'<-2C 100
'i.4 22
~X-2 97 11.2 36 1-1.(
12~
~'X z;.: 100
- 3. ~
.12 1///
NX-2! 100 n.o rn tl;
~'X-:\\1 100
- 1. 9 49 r&
~2!lt l-111
- <rX-'11 IM 0, 9 fi2 f--2"1.
llOTTm1 1-1-
N
~ StJtniltu*tltu*n~~trnltnn t"f*RI~lrmc.'P* h\\n... t:~,fl Nnn:s nf't' l.t*n;_"th l"N'!t)Vr'f"f"d'lcnf(th COt"f'rl, rf RlJJ) -
[A~nt..'th nf !'tounrl cnrt' *1 in, nnrllongf'~/lcn~::th t*nrPd, '.
~ ~
~plit ~nQOn R-amPk*
... Groundwater i!i U
- tlnth<>turhed SRmple~
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. 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 chlorite others 15%
15%
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 epidote quartz calcite opaque sphene &
apatite 25%
20%
20%
5%
5%
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 Your
Reference:
82 129.5 Submitted by:
Ed Levine Weston Geophysical Research Inc.
P.O. Box 364 Weston, MA Sample Description & Locality:
Date Received: 20 January 1969 Date Reported:31 January 1969 Newburyport quartz dioritet biotite-bearing phase, drill core 82, Seabrook, N.H.
Material Analyzed: Biotite concentrate, -20/+100 mesh Ar 4o */K 4o =
Argon Analyses:
Ar 40 *,ppm.
0.1431 0.1432 0.0186 Potassium Analyses:
%K 6.295 6.316 Constants Ulotlld:
Xp=4.72x10 10/year 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.
Ar 40 *I Total Ar 40 0.950 0.953 Ave. %K
/.
6.3t}L AGE"'
Ave~ Ar 40 *,ppm.
0.. 1432 k 441,ppm
/.693
Our Sample No. B-iLil'T Your
Reference:
a A,.
Submitted by:
llr. -. llottS
- 24 Blackstooe Str*t. c.nrllal. Mal. lflt_..
Telephoaa. '11111NiN'idp "..,.1 REPORT Of ANAl YTfCAL WOfUC POTASSIUM-ARGON AGE DETERMINATIOti Date R80illfved: a....,
11illlloillllflll
- late Reported: Jl J 1 J.Stff
- a. *
.:~.J **
hi.... 1M...
Sample Description & LOC4Iftty:
~ ot t.~ae *ze *......
11t..U Clft
- A,.
- S.llu111* ** L 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.
o.~
o.oUs Potassium Analyses:
%K L-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.
Ar 40*/ Total Ar 40 0.891 o.evr Ave. %K
/
Ave. Ar 4 n *,ppm.
O.o.\\83 k 4 n. ppm s.. o:n
Our Sample No. 1...a.131
- Your
Reference:
If JI.J' Submitted by:
Material Ar 4o */K 4o =
0..0119 Argon Analyses:
Ar 4 0 *, ppm.
o.oe,k 0.090Wt o.oeoo Ar 40* I Total Ar 41) o.m 0.91T 24 Blackstone Stree( Cambridge, Mass. 02139 Telephone TRowbridge 6-3691 REPORT OF ANALYTlCAL WQRI(
POTASSIUM-ARGON AO£ DiTERMtHATtON Date Received:*., **
,,. Ult Date ReportedJ1J J 3961 Ave. Ar 411 *,ppm.
O.ol51 (tlfllaw.- *~
-.- -a. 111 -
- 1-.Jete).
Potassium.~nalyses:
%K Constants Used:
Ap = 4.72 x 10 10 I year
~ = 0.585 x 1 0 1 0 I year K 40/K.::: 1.22 X 10 4 g./g.
Note: Ar 40
- refers to radiogenic Ar 40
- Ave. %K K 4o,ppm x A r ~.:_~ + ' l
'J K 4o
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 Your
Reference:
PF - Sl Submitted by:
Richard J. Holt Weston Geophysical Res., Inc.
P.o. Box 550 Westboro, MA 01581 Sample Description & Locality:
Kittery quartzite Date Received:
22 July 1974 Date Reported: 16 August 1974 Towle Road, Hampton-Exeter Expressway Hampton, New Hampshire Material Analyzed:
Chloritized biotite concentrate, -80/+200 mesh.
Ar 40 */K 40 ""
.01687 Argon Analyses:
Ar 40 *, ppm.
.06717
.06588 Potassium Analyses:
%K 3.224 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.
Ar 40*/ Total Ar 40
.834
.862 Ave. %K 3.233 AGE=
268 + 10 M.Y.
Ave. Ar 40 *,ppm.
.06653 K 4o,ppm 3.944
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 Argon Analyses:
Ar 40 *,ppm.
.01794
.01752 Potassium Analyses:
%K
- 752
.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.
Ar 40*/ Total Ar 40
.674
.668 Ave. %K
.741 AGE=
308 + 14 M.Y.
Ave. Ar 40 *,ppm.
.Oi773 K4o,ppm
.. 904
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 Argon Analyses:
Ar 4 0 *,ppm.
.1522
.1478 Potassium Analyses:
%K 6.563 6.631 Constants Used:
Ap=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.
.852
.782 Ave. %K 6.597 AGE AGE=
294 +/- 10 M.Y.
Ave. Ar 40 *, ppm.
.1500 In ~--1\\-e x ---
[
+.,.
Ar 4 o " + 1]
Ae +
'A~
'Ae K 4o
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 Your
Reference:
PF - 54 Submitted by:
Richard J. Holt Weston Geophysical Res., Inc.
P.o. Box 550 Westboro, MA 01581 Date Received:
22 July 1974 Date Reported:
16 August 1974 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 Argon Analyses:
Ar 4 0 *,ppm.
.02042
.02049 Potassium Analyses:
%K 1.015 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.
Ar 40* I Total Ar 40
.625
.645 Ave. %K 1.019 AGE=
262 +
11 M.Y.
Ave. Ar 40 *,ppm.
- 02046 K 4o,ppm 1.243
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 Your
Reference:
SRF - 51 Date Received:
22 July 1974 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 Argon Analyses:
Ar 40 *,ppm.
.03714
.04070 Potassium Analyses:
%K 1.. 154 1.154 Constants Used:
Afl 4.72x10- 10/year
""-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.
.807
.389 Ave. %K 1.154 AGE=
422 + 17 M.Y.
Ave. Ar 40 *, ppm.
- 03892 K 40,ppm 1.407 AGE=
ln~A.{j+A.e xAr40*+1]
"-e + A~
L "-e K 40
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 Your
Reference:
SRF -
S2 Submitted by:
Richard J. Holt Weston Geophysical Res., Inc.
P.O. Box 550 Westboro, MA 01581 Schist Date Received:
22 July 1974 Date Reported:
16 August 1974 Sample Description & Locality:
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 Argon Analyses:
Ar 4 0 *, ppm.
.01162
.01136 Potassium Analyses:
%K
.492
.483 Constants Used:
AIJ = 4.72 x 10 -J 0 I 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.
.381
.548 Ave. %K
.487 AGE=
304 +/- 15
.01149 K 4o,ppm
.594 M.Y.
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 Your
Reference:
SRF -
S3 Date Received:
22 July 1974 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 Material Analyzed:
Parker Street, Little River area Newburyport, Massachusetts Chlorite-biotite concentrate, -80/+200 mesh.
Estimated composition:
70% chloritized biotite, 30% quartz.
Ar 40 */K 40 =
.01860 AGE=
294 +
20 Argon Analyses:
M.Y.
Ar 4 0 *, ppm.
Ar 40*/ Total Ar 40 Ave. Ar 40 *,ppm.
.005765
.005330 Potassium Analyses:
%K
.245
.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.
.325
.370 Ave. %K
.244
- 005548 K 4o,ppm
.298