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" July 23,1%3 PDOP.ANDUM To : File From :
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R. H. W1.lcox, Assistant to Dtec. Secretar'y*
i ACRS
Subject:
DL&R ME2 TING WITH PACIFIC GAS & ELECTRIC ON, JULY 2,1963, CONTRNING BONGA BAY SEISMIC P!OBIES
'Its purpose of this meeting was to discuss earthquake problers connected with proposed construction erd operation of the Bode 5a Bay rerctor. ACnS mear. ors were invited to.atter1. A preliminary resting involving DIAR, its -
con:ultants and ACRS was held at the Boliday Inn - West. Chica6o Illirmis from 9-11 P.M. on July 1,1%3 'Jhe entire gmvp then met with PG&E ani
= its consultants at the AEC-Chicago Operations Office on July 2 1963 from _
9 A.M. until about 3 P.M.
Attendees for teth sessions:
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ACRS AEC - DIAR H. J. C. Koutr K. R. Osborn E. G. Cace C. R. Wil11ame R. E. Bryan D. A. Rogers F. N. Watson ,,,
R. C. Stratton J. F. Bowell i R. H. Wilcox, Staff U. 8. Geological Survey AE0_. Ocepliar.l! A. Clubsch ,
R* 3' ED8'lA" DIAR Censmitants G. Opencer -
N. M. hek, U. of Illinois i AEC - 00C F. Dems. U. of Washington (Emeritus)
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R. A. Williamson, Bolmes & Nurver G. F. Hadlock j AEC-RE3ULATION
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C. K. Beck M. M. Mann - O s
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I Attendees for July 2 session onlyj ,
PG&E j PG&E Consultants C. C. Whelchel R. . D. Darragh, Dames & ) bore R. V. Bettinger G. W. Bousnery Calif. Inst. of '14ch.
F. F. Hauts D. Tocher, U/ of California P. A. Crane W. L. Quaide,^ Consultant'
. i, JULY 1 )EETING q Re July 1. meeting was opened by E. G. Case who indicated ,that he hoped to reach agreement among DIAR and its consultants on earthquske design factors; then to explore whether there was any difference in such fcetors ._
. betveen DIAR and the applicant. a Draft reports of NewmarP,- Neumann, and Williamson were banded out for
= discussion p*zrposes. It was stated that Dr. Neumann's conclusions could :
serve as the bcsis for the design report, eithough there was to be some simplification of Neumann's report. P
.s Dr. Newmark discussed the effects of earthquakes on structures in terms of acceleration mi displacement "respmse spectra". He noted that there s-..
are reecrds available of 19 strong cotion earthquakes. Using the El Centro earthquake as a base, he stated that a quake on the ozder of twice the peak velocity and acceleration of this one is likely once in 50 years.' (El Cen'.ro had a peak velocity of 14 in./see sad acceleration of 0 33 g as- -
measuved 4-5 miles from the fault. Se epicenter was 20 miles below the p surface.) Rus the "=av1=um credible certhquake" might cause 30 in/see ~
j velocities.3/4 accelerations,and5-10ft. displacements;thelatter occurring in steps. Displacements in California are usually horizontal. - #
j Dr. Pvmark expriosed concer'z over high frequency (5-10 cps) structures which he feels should be desiged to 50% higher accelerations than now contemplated. S e choice of demping factors takes a great deal of judg.
ment. Newmark believes that very stiff structures vill be *orse on rock, since he feels there vill be little attentvation of such oscillations as compared to soil. eg Dr. Newmaat also cautioned that there would be greatest 4112ficulty with elements which are attached to other elements which softc Rus a very I elaborate d p e analysic.is needed. a Mr. Williamson noted that practically everything is in the high frequency range. Se concern is therefore in the frequency range of greater than 2-3 cycles on rock. 1
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Newmark noted that care must be taken with regard to structures een i different foundations (such as reactor and turbins) connected by a pipe. !
the difference in displacements can approach the sum of the absolute values of the two displacements.
Drs. Neumann and Newmark were in agreement that design should be based on !
tvios El Centro for soil with an addition on the high fre'quency side for I
rock. '- l theertainty was expressed as to what PG4E amant vben it proposed to. analyse l for earthquakes five times as great as El Centro (vbetber velocity or -
energy). It was agreed to explore this further the next day.
Dr. Newmark stated that vital switches could and should be overdemicned to vithstand conservative earthquake ground motions. (Dr. Bryan had cited mercury evitches as an example of a non-structural iten which would havs _
. to be considered.) D ere was some discussion of other earthquakes.. in-cluding the 1906 San Francisco quake for which damage would indicate much higbar forces. Greater than 1 g earthquakes any have occurred in other ;
- parts of the world. Newmarkindicatedthatverticalaccelerations1/2-2/3 u of the horizontal should be provided for.
Dr. Beck suumed up by stating that he would suggest to Mr. Welchel that
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discussions the next day center on: *
- 1. Characteristics of earthquakes.
- 2. How earthquakes would be applied to the plant design.
3 Coupling effects; a list of structures; secondary effects. [
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JULY 2 M2 TING -
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Dr. Beck opened the meeting on July 2nd by stating three basic questions to be discussed: ,
- 1. With work going ahead on the site itself/ brief statement of any quite recent information. -
- 2. An exploration of possibilities of what designs should go in.
- a. What are the basic characteristics of earthquakes 7 kw bad an earthquake sight happen, in terms of velocity, acceleration, displacement as functions of frequen:y.
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- b. What methods does the corpany propose for cecondary ,
systems not part of or ocupied to the basic structuref
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3 Assugtions, criteria, principles.
Following brief ste.tements by Messrs. Vbelchel and Mauts, Mr. Saaide discussed the site geology. He has been fol. lowing the excavation and mapping as it goes along. The quarts-diorite is exposed on the north face. Down to +5 ft. the current limit of excavation, there was nothirg which could be proved definitely as a displacement. Shere were two places vbere be had to esercise jud t rat (interpretatica) to make this statement.
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Dr. '1beher indicated that the 1906 earthquake was the only recorded one of interest in this region. .
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Mr. @ amide and Mr. Clebach both indicated that age determinations of _
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fossil veed samples were in process.
Mr. gamida noted that there are stratification planes, but no evidence ~
of displacement on the southwest face. He thtrara these and organic rich areas are free an old bay. Bc has found no indication of a fault across the heed at Cagbell Cove and no evidence af 1906 breakage.
Dr. Housost nazt described the straining which is occurring in California and which eventually leads to a stress failun, or earthquake. 'Ibe 5/18/W x1 centro earthquake resulted in surface slippage over a leo-50 mile length. Idawi== relative slip on the surface was 15 ft. se noted that the majority of ali destructive earthquakes occur on other faults, but i
that the largest earthquakes are almost sure to occur on the San Andreas or one of its southerly extensions.
1be 1906 earthquake resulted in slippage about 250 miles in length asui with mart == relative displacement of 20 ft. There was also a large earthquake in central California in 1857 3
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Eousner laticated that the intensity of shaking depends both on the energy release and on how close one is to it.
81mee ordinary seismologic inntraents go off scale in a moderate earth.
gumke, dependence must be placed on the 72 accelerometers which begna to be used in 1933 for engineering measurements. ',
In Magnitude (Richter scale), slight damage begins at 5 The 1906 earth quaks was 0.2, the 1960 QLilena earthquake was 8 5 ami 600 miles long. n Centro was 7 1. I The Modified Mercalli scale is used as an estimate of grouet shaking intes-sity at a particular point. Ground accelerations are recorded in order to obtain spectrum intensity.
-Dr. Housner then distributed the first of a number of handout illustra.
tions. (Copies can be reproduced for mayone wishing a set of these.)
It>st instruments are in cities, and therefore on allurium. Records of the 1906 earthquake indicate that it lasted 30-50 seconds.
In geosral, the earthquake motion starts at the epicestar and Weces does the fault at a velocity no less thaa 2 miles per second. There was some discussion of the nature of action 1000 ft. instees of 4 miles from a alty.
Do secondary breaks followed the E Centro earthquake, and Dr. Tochar stated that aftershocks rarely produce additional surfase breaks. Dr.
Bousner noted that he had i m ected the damage frtaa the 1940 El Castro earthquake, and noted that it indicated less intensity in the immediate -.
vicinity of the fault than where measured at n Centro. Five miles from -
the fault, houses were also undemaged.
Dr. Brummer proceeded to discuss how he arrived at design eriteria for tus -
Bodegn any plant. For an upyer boumi, he used the worst throw ass uias the entire 1906 alip occurred as a step (lubricated slip). Es also unde use of the shape of the accelerogram records of the E Centro earthquake.
There was ocasiderable discussion over difference in intensity on rock as coepared to alluvi a. Dr. Ip/sner indicated that a point on the surface-ct alluvium would have an esplitude of action at least tries (and some say four to five times) that of the underlying rock. Dr. Bouseer made the folloring ccuparison as being about the best one could anke: 1 1
Barthquake Magnitude lentarial Epieentral Measured l Distance Acceleratica i
6.2 A11uvim 17 miles 0.25 g Inns Beach 1933 Balena,Itatana 193$ 6.0 Scak 4 miles 0.12 g Dr. Bewaark indicated that smething had been imarned about this from suel' ear tests. In asceral, Newmark thought that there would be larger accolarations, smaller displacements, nad stadiar valoeities as rock as d
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l 6-compared to Elluvium. ~ Reference was made to a los Angeles earthquake in which the dispiccement.on alluvium was three times that on granite.
At El Centro, this ratio was thought to be 8 to 1.
Upon questioning by Dr. Kouts, Dr. Housner admitted that accelerations near the epicenter of the El Centro earthquake might have been larger than .
were measured. Housner also agreed that 1.4 times El Centro was a reason- a able upper bound. Proceeding thence to Bodega Bay, and decause the plant . I would be located on rock Housner specified 20% g as the"aszimum accelera-tion, and a spectrum similar to El Onntro , but correspondingly. reduced.
3 Da.Tage information in the Bodega Bay region was next discussed. Damage I was very much vorse on soft than on hard ground, but this was at least in part due to poorer foundations. Dr. Ibcher reiterated that movements vest of the Sierra Nevada have been horizontal not vertical. 'M=ny geologists feel that this is borne out by the long term geologic recc.d. _
2e meeting recessed for lunch at 11:k0 'A.M. and resumed at 12:40 P.M. I 1
Q,iscussion of design criteria continued. Dr. Housner. quoted from a paper :
to be given the next week by W. K. Cloud, Seismological Field Survey Chief, at a meeting in Chile. For greater than 71 angnitude earthquakes. Cloud recomunends 0 50 g for maximum acceleration and 60 seconds for duration as engineering numbers. Similar numbers are being used in the design of a water project along the fault, which crosses it in three places. In this case, the 0 50 g number was selected by a four man board, eensisting of Benzoff, Seed, Whitman, and Housner. {
Housner sunmarized his design recommendations for the Bodega plant as: -
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- 1. Ground motion equivalent to El Centro (33% g).
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- 2. Average spectrum for the two components measured' at El Cintro. _
3 Use allevable stresses in the uniform building code without -
the1/3rdincrease.
i Various Bodega structures were next discussed. Se reactor building was i stated to have a 0.1 second natural period, and in general, ssJor structures presented no problem. 2 tion of components should be based on El Centro or on calculated motion of major structures to whica these were attached.
Verticalmotion2/3ofhorizontalshouldbespecified. On damping, Bousner would now recommend 12% at O period, decreasing asyn:ptotically to 7 5$
vith increasing period. ( 21s is greater than the 7 5% he previously recco-mended because the soil is more dense than previously contemplated.
As for. the factor of 5 analysis propcsed by PG&E, Housner said that thirds shouldn't fall down in an earthquake five times as intense. When asked I
about control rods, however, Bousner said be couldn't give a categoric j ansvar fbr all equipment. He felt the factor of five would provide a margin i for stronger motion and defects in materials. He ineant five times the El s Centro acceleration spectrum (25 times the energy). l l
Messrs. Whelchel and Housner thought that this analysis would substantiate ~
that nothing would fall or be overtrained if there were a 1906 quake every
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Dr. Beck suggest'ed that one must Icek at penetrations, roda, etc. in a piece-by-piece analysis to meet the c.mximum credible earthquake. Dr.
Ecuts suggested that this be done on those things which asust be relied i upon for ultimate safety. Mr. Whelchel stated that be could not answer t for all of these at this time. f 1 At the low period (high frequency) end of the spectrum (less than 0.2 '
seconds), Bousner indicated be would " fair in" a curve. Mr. Mautz indiedted that, instead of the Class I, II and III structurett previously !
I planned, others".
PG&E vas acy thinking of only two classes, " critical" and "all i In the " critical" category would be the steam loop and feed- l vster piping, containment, stack, turbine-generator foundation, and tanks.
and lines storing and feeding water. We emergency water reservoir vill be located on elevated ground at a spot yet to be specified. -
i In reply to a question by Dr. Bryan as to design criteria for critical eccponents other than " structures", Dr. Housner and Mr. Whelchel ir.di- i cated that this needed a detailed look. Se question of future schedule _~ {
I was discussed briefly, then Dr. Beck suggested a caucus.
CAUCUB (PG&g AND ITB CONSULTAFfS NOT PRESDrf) i l
Dr. Newmark felt that twice El Centro should be the design earthquake.
l Bus, thendssign should' provide-terr:
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.23 with allevable stresses 33 g at 1-1/3 vorking stresses,
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or .45 g at the yield point 4 Dr. Newmark said that scas say you should take the RNS or envelope 6f the N-8 and E-V El Centro records, thus arrivirg at .45 g for this earthquake. _.
Dr. Beck mentioned that a provisional construction permit could reserve on be made such to items, reachbovever, agreement. others, including Dr. )hna, urged that an attempt '
Dr. Kouts pointed out that the applicant was in fact backing down from previous commitments, and had established no basis for so doing. )
j t Dr. Newmark appropriate restated that be vould recommend .66 g (twice El Centro) with damping.
. I PACIFIC OAS & 212CTRIC 00.
Dr. Beck pointed to the discrepancy in what was said in the meeting and previous submittals, as between the N-8 El Centro and allowable stress in the uniform building code, 0 33 (with 1/3 increase) and .45 g at yield.
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Bousner stated that his recotesendation was the B-8 El Osatro with the allowable stress in the building code (1/3 aver moraal); thus he had reen===aded .45 g at yield. It developed that Bousner had intended the average El Centro spectrum to go with the g values' which appear in the P06E submittals. (De average El Centro with all'ovable stresses-is thus equivalent to the N-8 El Centro with allowable stressee increased by1/3.)
Dr. Kouts pointed out that this was not the original proposal, and Dr..
Bevaark inquired about the worst El Centro. Dr. Bousner noted that motions were statistical, but didn't seem to vary much as a function of direction. ,
A design specification of 0.66 g would not effect the bottom of the -
structure, but would effect the walls of the refueling building.
Dr. Housner defended his criteria as conservative. Es repeated that
- many seismologists use a factor greater than 2 from alluvium to rock. ,,-
Be argued that all recorded gunkes follow the same pattern. Sus,2/3 of the El Centro ground motion is the most he sapects at Bodess, the other1/3issafety.
crack.
If .45 s is exceeded, he would expect a hairline W.Watsoninquiredintointensities(Modifiedbroalli. scale). Housner indicated that El Centro was a II. Tocher and Bousner noted that II was the min 1==
if a ground crack was observed, thus they discounted the value of such observations. - '~
Dr. Beck indicated that the matter deserved careful thought. Es suggested .
a specification of 0 5 g without yielding for structures, and'O.66 g for control rods, etc. to remain in operable condition. (or.33gwitha :
factor of safety of 2 against yielding). Dr. Bousner thought this was not unreasonable.
Dr. Eouts acted that the only question then would be the refueling building.
i Dr. Bousner felt this could be handlad, possibly through the analysis at a factor of five times design.
Dr. Bousner noted that 704E would want to check with its vendors, however. '
Mr. Osse suggested it might be better to have criteria, then grant as-ooptions in particular situations.
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[ d4 (File Cop $ v g * # M A Research Proposal Submitted to , g'g y
.' HIE NATIONAL SCIENCE FOUNDATION v-Date: . August 5, 1963 Project Titie: Recent Sedimentation and Faulting in the Submerged ,
San Andreas Rift Valley, North-Central California. j Institution: Pacific Marine Station, Dillon Be46h, California University of the Pacific, Stoc,kton 4, California l
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Principal Investigator: Calvin C. Daetwyler .
Research Associate .- l i_ Pacific Marine Station I Anount of Support Reauested: 45,918 75 - l Period of Project: October 1, 1963 to October 1, 1955
. Desired Starting Date: October 1, 1963 !
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Calvin C. Daetwyler l Principal Investigator -
Joel W. Hedgpeth i Director -- , ,
Pacific Marine Station Samuel L. Meyer Academic Vice President '
University of the Pacific l
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Robert R. Winterberg .
, Executive Assistant to the President i University of the Pacific I h ar
. 9 g~ U INTRODUCT10N i
The Tomales Bay-Bodega Bay segment of the San Andreas Fault
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Zone offer'!f an excellent opportunity to study the inter-relation- !
ships between concurrent faulting and Recent marine sedimentation 3 l
in a submerged rift valley. In this area we have the unique j
. l combination of an extensive wedge of Recent maride protected and I
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open bay sediments deposited in a submerged rift valley character- 1 ized by known fault movements in historic times. '
l The principal objective of this investigation i.s to determine 1 l
the effects of recurrent and contemporaneous faulting on the Recent I L I sediment facies types, thickness, distribution and depositional -
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history in the Tomales-Bodega Bay submerged rift valley.
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The estimated duration of the project is two years. Most of the funds requested for the first year are to be used. for ship time and modification of the Pacific Marine Station's Bios Pacifica for sonoprobe and coring studies. The salary for the
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principal investigator for the summer (3 months) of 1963 is .
included in the funds requested for the second year. In addition, -
a total of 3 months salary for a field research' assistant has been ,
requested.
The Department of Oceanography, University of California, San Diego has granted the principal investigator $1800.00. This money will be used for laboratory atudies and expenses involved while the principal investigator is at the University of California, San Diego. Ship time on the R. V. Spencer F. Baird is being pro-i vided by the Scripps Institution of Oceanography. This ship time I
amounts to an additional support of approximately 46000.00.
This proposal has not been submitted to any other agency. ,
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U BACIrrROUID
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Location:,Tomales and Bodega Bays are located in Marin and Sonoma Counties, California, between 38 04' N Lat. and 380 10 ' N Lat.
(Fig. 1). These bays ere approximately 40 miles northwest of San Francisco and 6 miles south of the mouth of .the Russian River. ,
Bodega Bay is 6 miles in length in a northwest direction and 1 3 1
miles in width. The entrance of Tomales Bay is 6 miles from l Bodega Head at the northwest corner of Bodega bay. Tomales Bay is 12.6 miles in length and its width ranges from d.4 to 13 miles. ,
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~ Geolcgic Setting: Tomales and Bodega Bays lie along the axis of
, the northwest trending San Andreas Fault Zo,ne. In a broad sense, _
the structural trough occupied by these two bays is a feature of the San andrets rif t which controls 'the topography of a belt averaging three-quarters (3/4) of a mile in width from the Bolinas area in the south to Bodega head in the north. To the south of j
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1 Tomales Bay the rift lies in a zone of abnormal and ill-adjusted
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l longitudinal drainage which extends through to Bolinas, a distance i The most striking geomorphic feature of this sub- '
of 14 miles.
aerial portion of the rif t is the presence of low ridges with intervening ravines elongated parallel to the general axis of the depression. This ridge and ravine topography is not reLdily observable in Tomales and modega Bays. However, Hog Island, in Tomales Bay, and a submerged rock one-half (i) sile to the southeast of it, apparently are hi6 her portions of a bed rock ridge which has been masked by marine sedimentation.
I The San Andreas Fault Zone is active at the present time.
Thfs is evidenced by either instantaneous adjustments, such as.
the movements associated with the Oclifornia earthquake of }
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April 18, 1906, or the slow creep determined by periodic geodetic strain gauge measurements now being made at d triangulations and Hollister, California, south of the San Francisco Peninsula. ;
During the 1906 earthquase the maximum measured horizontal movement of 21 feet occurred near the head of Tomales Bay at 01ema. / l The San Andreas Fault Zone bisects the Tomales Bay-Bodega l Bay region in two distinctive geological terranes. On the south-west side of the fault zone, the Point Reyes structural block ;
is characterized by quartz diorite (Bodega diorite) with s'ome i
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- associated schists and marble roof pendants, unconformable over-lain by Miocene sediments. Bodega Head, consisting of quartz. !
diorite, belongs to the Point Reyes block.
To the northeast of the fault zone the terrane is dominated ,
i by the Franciscan group. This consists of'interbedded sandstones l and cherts with associated igneous and metamorptiic rocks. Two younger sedimentary sequences are present northeast of the fault -
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zone: sho Pliocene Merced formation consisting of sandstones and conglomeratesdepositedunconformablyontheNranciscan,andthe ,
Pleistocene Millerton formation exposed in terrace remnants on three headlands (Toms Point, Double Point, Millerton Point) on the east side of the Bay. The Millerton formation contains a bay fauna indicating deposition in a Pleistocene Bay somewhat analagous to the present Tomales Bay.
Submarine, Topograohy: The most striking feature of Bodega Bay
( is the submarine ridge between Tomales Point and Bodega Head, which define s the western edge of the submerged rif t zone. This ridge is not continuous and is breached in two places. This
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breac'hing perhaps is relate'd to lowered Pleistocene sea levels i
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and the ny submerged drainage of Estero americano and Estero San Antonio. To the west of tle submarine ridge, shelf depths y are encountered, while to the east, the deepest sounding is l 77 feet. The ridge juts to the surface at Bodega Rock and on the cebial portion of the ridge depths of abodt 31 feet are present. The average' water depth of Bodega Bay is about 55 feet.
Tomales Bay can .be conveniently divided into two topographic ;
regions. North of Pelican Point the bottom topography is relatively
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1 complex. A deep channel is located on the west. Four elongated l
-l depressions occur along the axis of the channel. Broad shoals
. dissected by narrow channels extend along the eastern shore between
, _~i headlands. South of Pelican Point, the bottom topography is less varied. The bay cross section becomes more or less symmetrical about its" central axis. Seven or eight depressions occur near the shores in this portion of the bay.
. -. j Tides and currents: The tides iii the bay are of the mixed-semi-diurnal type with two unequal low tides and two unequal high tides ~;
in each 25 hour2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> period. Tidal range (maximum) is about 8 feet. ,
The currents in Bodega Bay are both tidal and wave induced, with the latter predominating. The currents in Tomales may are domin-antly of tidal origin. ' Currents of up to 5 knots have been measured at the mouth of Tomales Bay. South of Pelican Point j the currents are weak. There is a tidal lag of about one hour j i
between the entrance and the southern end of the bay.
i Cl$nate: The climate of this region is characterized by wet and !
dry seasons. The dry season extends from May to late September i
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with an average precipitation of less than 0 5 inches. 1>uring -
( the remain,d.er of the year the average precipitation'is 4 3 inches .l per month. The annual average is 31.6 inches per . year. _
The mean air temperature is 32.4 . The region is noted.
for its coastal fogs. These oc cur chiefly during July and August
,,* -1 and are limited to a 3-10 mile zone along the . coast. Point hey ~es, J to the southwest, is one of the foggiest weather stations in the United-States.
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PROPOSED RESEARCH
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Objectives: The primary objective of this investigation,is to determine the effects of recurrent and contemporaneous faulting on the Recent facies types, thickness, distribution, and deposi-tional history in the Tomales Bay-Bodega Bay submerged rif t valley.
Specifically, answers will be sought to the f ollowing questions:
- 1) What is the present Recent sediment facies distribution in the area?
' 2) What is the three-dimensional distribution of the facies?
- 3) Are there any facies present which are primarily the result of, and unique to marine deposition in a submerged rift valley characterized by recurrent faulting?
- 4) Is there any fault pattern developed in the Recent sedi-ments?
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- 5) Is there any correlation between the recent fault pattern, i
if it exists, sediment thic kness and facies distribution?
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- 6) Can the amount and' sense, of Recent movements along the i : San Andreas Fault Zone be determined from the geometry .
of the facies distribution, pre-Recent unconformity, and fault pattern?
i Method of Study: This s'tudy is heavily dependent on a marine sonoprobe survey. This tool should died some light on the three-dimensional facies pattern and thickness of the Recent sediments.
I In addition, it is hoped that the sonoprobe will satisfactorily 1
delineate the pre-Recent unconformity and any fault pattern
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developed in the Recent sedirant sequence. It is not anticipated that any structure below the unconf ormity (Franciscan lithologies or Bodega diorite) will be outlined by the sonoprobe. 'However, plans have been made for using an ESP (Electro Sonic Profiler)
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for traverses across the San Andreas Fault Zone in Bodega Bay to ascertain deep pre-Recent structural relations in this part of the subme26ed rif t pley. - ] ..
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Samples for lithologic and facies studies will be made with
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conventional), coring gear, both gravity and piston. - Rock dredges
- will be taken and some jetting or reverse circulation drilling is anticipated.
Implicit in this investigation is the understanding of the depositional processes operating. in this area./ Thus, some physi-
' cal measurements of the marine environment probably will .b e -
necessary. It should be noted that a f airly detailed hydrographic l
survey of Tomales Bay was made in the summer of 1960 by the Pacific Marine Station. Data on- water temperature , ' salinity,
' oxygen content, and current measurements .are available. _The gathymetry of Tomales and Bodega Bays was re, surveyed by the USCGS in 1957 Nine months of tidal records taken at three stations in Tomales Bqy and the unpublished boa't sheets of Tomales and:
Bodega Bcys are available for examination. In addition, continuing ecological studies are being made in Tomales" Boy by the staff of the Pacific Marine Station. T
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i Plan of At, tack: 7 A tentative program for this investigation is as folloks:
- 1) Close-spaced and .de taile d marine s onoprobe survey of I Tomales and Bodega Bays.
- 2) ESP traverses in Bodega Bay. j
- 3) Synthesis of data. from sonoprobe survey and ESP traverses. y This includes compilation and integration of all bottom i soundings (USGGS boat sheets and sonoprobe bottom .
soundings).
- 4) Bottom sampling program based on results of. sonoprobe l survey; gravity and piston cores, rock dredges; jetting l
( and reverse circulation drilling if feasible. ;
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' 5) Field geology studies of reconnaissance nature in around the Tomales Bay-Bodega Bay area. Emphasis.placed on ;i
, Pleistocene depositional analog. h:
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- 6) Laboratory studies of all sample material.
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- 7) Integration of data and writing of report.
v-Fbcilities:- The Pacific Marine Station will be used as a base of operations for all . field work, initial sample preparation, and preliminary studies of sonoprobe records duringethis phase of the study. All ship time will be on the Bios _ Pacifica, the converted 36 foot LOPL of the Pacific Marine Station.
The Pacific Marine btation also maintains a weather station which records wind speed, duration and direction, air temperature, humidity and rainfall on a daily basis. --
Mr. D. G. Moore, of the daval Electronic Laboratory, San Diego,
~
'has generously offered the use of the HEL sonoprobe for this study. '
Coring and sampling equipment is available at the Scripps Institution of Oceanography as are modern pedimentalogical labor-atory facilities and equipment for environs, ental monitoring.
The Electro Sonic Profiler and related ship time is also being supplied by Scripps. -
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PERS0tTEL
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- 1. Principal Investigator Calvin Crowell Dnetwyler, Jr., born August 11, 1930 at i Philadelphia, Pennsylvania. l B.S. (Mcg.na cum Laude), Syracuse University, 1952 (Geology). {
of Ceilifornia, AtSun present inDepartment Diego; residence at the University (candidate for Ph.D.,
of Oceanography Oceanography). _.
RecipientofJerseyProductionResearchCompan[ academic Fellowship 1962-1963; 1963-1964.
subsurface geologist and field geologist ,
Geologic with thetrainee, Creole Petroleum Corporation, Caracas, Venezuela. l Engaged in field mapping in eastern and western Venezu61a; !
subsurf ace geologic work in the Quiriquire field, eastern __
Venezuela, 1952-1954.
Research geologist with Jersey Production Research Company l (former Carter Oil CompanyR.esearch Laboratories), Tulsa, = i Oklahoma. Studies in petrogenesis of limestones--recent sed- j 1 ment studies and hydrography of the Gulf of Batabano, Cuba, 1955-60. At present on educational leave of absence from l this organization. l l
Member of Phi Beta Kappa, American Association of Petroleum l Geologists, The Society of Economic Paleontologists and Mineralogists, Tulsa Geologic Society. ,
Visiting Assistant Professor of Marine Geology, Pacific Marine ctation, Dillon Beach, California--Summer, 1962.
Research Associate, Pacific Marine Station, 1963-1964. :
Bibliography:
l 1958 Daetwyler, C. C. ; Kidwell, u. L. , and Hoskins , C. W. ,
l Recent Carbonate cediments, Gulf of Batabano, Cuba:
l Preliminary Research heport Jersey Production Research C o. , Tuls a, Oklahoma . p . 1-101.
1959 Daetwyler, C. C. ; Kidwell, A. L. , Tne Gulf of Batcbano, l A Modern Carbonste Busin: Fifth World Petroleum Cong.,
New York, Prog. Sec I, p. 1-21.
1960 Daetwyler, C. C. , Depositional Environments of Recent Carbonate Sediments, Gulf of Batabano, Cuba. Pcrt I:
. Sediments of the Batabano Platform, p. 1-144. Part II:
Sediments of the Beeper Waters Marginal to the Batabano
( Platform. Jersey Production Research Company Technical Report, p. 1-21. ,
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(' 2. Research' Assistants Funds are requested for a research assistant'for a period of three months. Graduate students at the University of California, San Diego and graduate students and staff.of the Pacific Marine Station will from time to time also assist the principal investigator in the field.
- 3. Consultants of the Pacific Marine Station; J. L Hedgpeth, Director Available as a consultant in marine ecology.
R. G. Johnson, associate Professor of Paledn'tology, University Univ ersity l
l of Chicago and Adjunct Professor in Paleontology,ine of the Pacific. Available as a consultant in mar ecology and geology.
F. P. Shepard, Prof essor of bubc:arine Geology, University of.
California, San Diego. Available as a consultant in marine geology. ,
i- .
l J. R. Curray, Research Geologist, Scripps Institution of Oceanography. Available as a consultant in marine geology.
l s f J. C. Crowell, Associate Professor of Geology, University of California, Los Angeles. Available as a consultant in j
l
' structural geology.
R. S. Arthur, Associate Professor of Oceanography, University of California, San Diego. Available as a consultant in physical oceanography.
G. G. Shor, Associate Research Geophysicist, Scripps Institution -
of Oceanography. Available as a consultant in marine geo- -
physics and acoustics.
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- PROPOSED BUDGET October 1, 1963 cotober 1, 1963
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let year 2nd year Direct Go a
- 1. Salaries A. Principal Investigator l' 3 months, Summer, 1963 $1200.00 B. Research Assistant /
3 months total at $350/ month .$700.00 2 330,o0
- 2. Travel A. Four round trips,. San Diego-San Francisco @$40.00 per trip 80f09 80.00 B. Two' round trips San Diego- -
Dillon Beach by University of California vehicle .- 150.00 130.00 __
C. Travel to scientific meetings ..
, and for consultation ,
300.00
- 3. Other Direct Costs -
A. Ship time on Bios Pacifica 30 days @ $33 F rer day (includes salary for boatman)' , 1030.00 B. Modification of Bios Pacifica
- 1. Mounting and removal of .A .<- >
sonoprobe transducers 100.00
- 2. Modification of Bios Pacifica ~
cabin for sonoprobe electronics; construction of chart table. 130.00 _
- 3. Mounting of new coring frame 75 00 C. Communications (telephone and postage) 30.00 30.00 D. Drafting and Data Reduetion 130.00 E. Shipping 100.00-TOTAL' DIhECT A06'rSA v42433 00 $2280.00. ,
1 During period September 1963 to August 1964 the principal ~investi-gator will receive a fellowship stipend -(Jersey Production Research
( Company Academic Fellowships). During the summer of 1964 the.
principal investigator will receive an academic salary from the i Pacific Marine Station for the period June is to August 1. This q salary amounts to $1200.00. .p
< 2 i;
- l. For field assistance during. sonoprobe. and coring studies. y y
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TOTAL DIRECT COSTS:. $2433 00 $2280;00 i I
[
' Indirect Cost's I i
231.Ioyerhead 613 75 570.00 l Total Annudl Budget 3068 75 2850.00 l 4
GRauYD TOTAL BUDGET FOR TWO mRS:>1 $5,918,75' ,
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