TOR H. Nl LSEN - USGS · 2016-08-26 · 8. Briones Valley--Tor H. Nilsen Preliminary...

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This map is preliminary and has not been reviewed for conform ity with . U.S. Geological Survey standards and nom en clatu r e. PRELIMINARY PHOTOINTERPRETATION QUADRANGLES, ALAMEDA, . I (WITH PARTS OF ADJOINING COUNTIES MAPS OF LANDSLIDE CONTRA COSTA AND TOR ON SEVERAL MAPS AND BY H. BY 1975 U.S. GEOLOGICAL SURVEY OPEN Fl LE MAP 75·277 OTHER SURFICIAL DEPOSITS OF 56 7 1/2-MINUTE CLARA COUNTIES, CALIFORNIA Nl LSEN JOHN A. BARTOW, VIRGIL A. FRIZZELL, JR. AND JOHN D. SIMS) LIST OF MAPS 1. Altamont -- Tor H. Nilsen Pr elimina ry photointerpretation map of l andslide and other surfic ial dep osits of the A ltamont quad- rangle, Alameda CountY, California 2. Antioch N6rth-- Tor H. Nilsen and John D. Sims pho t o interpret a tion map of landslide and other surficial deposits of pa rt of the Antioch North quadrangle , Solano and Contra Costa Counties , Califo rnia 3. Antioch South--Tor H. N ilsen Preliminary photointerp reta ti on map o f landslide a nd ot her sur f icial deposits of the Antioch South quad r angle, Contra Costa Coun ty, California 4. Benicia--Tor H. Nilsen, V ir gil A. Frizzell, Jr. , John D. Sims, and John A. Bartow Preliminary photo interpre tation map of landslide and other surficial deposi ts of the Benicia quad- Contra Costa and Solano Counti es , California 5. Bethany--Tor H. N ilsen Preliminary photointerpretation map of landslide and other surficial deposits of part of the Be thany quadrangle , Alameda and Contra Cost a Counties, Califo rnia 6. Bouldin Isl and--Tor H. Nilsen phot ointerpretation map of l andslide and other surficial deposits of part of the Bouldin Island quadrangle , Contra Costa County , California 7. , Brentwood--Tor H. Nilsen Preliminary photointerpretation map of landslide and othe r surficial deposits of the Brentwood 7\' quad- rangle, Contra Costa County, California 8. Briones Valley- -Tor H. Nilsen Preliminary photoint erpr etation map of landslide an d other surficial deposits of the Brianes Valley 7\ ' quadrangle, Contra Costa and Alameda Counties, California 9. Byron Hot Springs -- Tor H. Nilsen - 10. Preliminary photointerpretation map of landslide and other surficial deposits of the Byron Hot Springs 7\' quadrangle, Contra Costa and Alameda Counties, California Calaveras Reservoir -- Tor H. Nilsen Prelim inary photointerpretation map of landslide and othe r sur f icial deposits of the Calaveras Reservoir 7\' quadrangle , Alameda and Santa Clara Counties, Ca l ifornia 11. Cedar Mtn. --Tor H. Nilsen Prelimi nary photoi nte rpretation map of landslide and other surficial deposits of nart of Mtn. 7\ ' quadrangle, Alameda County, Californi.<l 1 2, Clayton--Tor H. Nilsen Preliminary ' 'lhotoint Prpretat 'l on map of landslide and other d,:;,pcs::t:s of th<O c ::.a,vtu .. 7? ' .. rangle, Contra Costa County , California 13. Crevison Peak-- Tor H. Nil sen Preliminary photointerpretation map of landslide and other surficial deposits of pa rt of t he Crevison Peak 7\' quadrangl e, Santa Clara County, California 14 . Diablo--Tor H. Nil s en Pre li min3ry photoint erpretation map of landslide and othe r s u rficial deposits of the Diablo quad- rangle, Contra Costa County , Californi a 15. Dublin--Tor H. Nil sen Preliminary photointerpretation map of landslide and ot her surficial deposits of the Dublin quad- rangle, Alameda and Contra Costa Co unties, California 16. Ey lar Mtn .-- Tor H. Nilsen Pr e liminary photointerpretatfbn map of landslide and other su rfi cial deposits of the Eylar Mtn . quadrangle, Clara and Alameda Coun ties, California -- 17. Gilroy--Tor H. Nilsen Pr eliminary pho tointerpr etat ion map of landslide and other surficial deposits of part of t he Gilroy SantA C:L1r .1 Co un tv, C:rtli f orn i 'l ------ 18. Gilroy Ho t Springs--Tor H. N ilsen Pr eliminary photointerpretation map of landslide and other surficial deposits of Gilroy Hot Spri n gs quadrangle , Gan ta Clara County, Calif ornia 19 . Hayward- -Tor H. Nilsen Preliminary photointerpretation map of l ands lide an d other surficial de po sits of the Hayward 7\' quad - rangle , Alameda County, California 20. Honker Bay--Tor H. Nilsen Preliminary photointerpretation map of landslide and other surficial deposits of part of the Hon ker Bay quadrangle, Cont ra County , Ca lifo r nia 21 . Isabel Valley- - Tor H. Nilsen Preliminary photointerpretation map of land s lide and other s ur ficial deposits of the I sab el V alley quadrangle, Santa Cla ra County , California 22 . Jersey Island--To r H. Nilsen and John D. Si ms Preliminary photointerpretation map of landslide and other surfic ial deposits of part of the Jersey Island quadrangle , Contra Costa and S9lano Counties, Cal i fornia 23 . La Costa Valley--To r H. Nilsen Preliminary photointerpretation- map of landslide and other su rfici al deposits of the La Valley quadrangle, Alameda County, California 24. Las Trampas Ri d ge-- Tor iL Nilsen Preliminary photointerpretation map of landslide and other surfic i al deposits of the Las Tram pas Ridge 7\ ' quadrangle, Contra Costa and Alameda Counties, California -- 2 5. Lick Observatory--Tor H. Nilsen Preliminary pho tointerpretation map of landslide and other surficial deposits of the Lick Observatory quadran gle , Santa Cla ra County , Cal i fornia 26. Livermore -- Tor H. Ni l sen Preliminary photointerpretation map of landslide and other surf ici al deposits of the Livermore 7\ ' quad- rangle, Alameda County, California 27. Mare Is land--Tor H. Nilsen Preliminary photointe r pretation map of l andslide and other surfic i al deposits of part of the Mare Island 7\ ' quadrangle, Contr a Costa County , California 28 . Mariposa Peak- -Tor H. Nilsen Preliminary photointerp retation map of la nds lide and other surfic ial deposits of part of the Mariposa Peak 7\ ' quadrangle; Clara County , California 29. M endenhall Spr ings--Tor H. Nilsen Preliminary photointe. I-pretation map of landslide and other s ur ficial dep csits of the Mendenha l l Spri n gs 7\ ' quadrangle , Alameda County, California Midway--Tor H. Nilsen Preliminary photointerpret:ation map of lands lide and other surficial deposits of the Midway 7\' quad- rangle, Al ameda County, California __.. 31. Milpitas--Tor H. Nilsen Preliminary photo i nterpretation map of lands lide and ot her surfic i al deposits of the Milpitas quad- rangle, Alameda and Santa Clara Counties , California ..- 32 . Mississippi Cree k-- Tor H. Nilsen Pr elimina ry photo interPretation map of landslide and other surficial deposits of part of the Mississippi Creek quadrangle, Santa C lara County, California - 33. Morgan Hill--Tor H. Nilsen Preliminary photointerpretation' map of landslide and other su rfi cial deposits of the northe astern part of the Morgan Hil l 7\' quadrangle , Santa Clara County, California 34. Mt. Boardman--Tor H. Nilsen Pieliminary photointerp r etation map of l and slide and other surficial deposits of part of the Mt . Boardman 7\' quadrangle, San ta Clara County , Cali forni a - 35. Mt. Day--Tor H. Nilsen photointerpretation map of lan dslide and oth er su rfici al deposits of the Mt. Day quad- rangle, Sant a Clara aqd Alameda Co un t;es , _ 36. Mt. Sizer--Tor H. Nilsen Prelimin a ry photointerpretation map of landslid e and ot her deposits of the Sizer quad- rangle , Santa Clar a Connty·, California 37. Mt. Stakes--Tor H. Nilsen Preliminary photo in t erp reta t ion map of and other surficial deposits of part of the Ht. Stakes quadrangle , Santa Clara Connty, California ' 38 . Mus tang Peak--Tor H. Ni lsen Preliminary photo inte rpretation map of landslide a nd other surficial deposits of part of the Mustang Peak 7\' quadrangle, Santa Clara Coun ty, Ca liforni a 39. Newa rk-- Tor H. Ni ls en P re liminary photoin. te rpret ation map of landslide and Other surfic ia l deposits of the Newark 7\ ' quad- rangle, Alameda County, Ca l ifornia 40. Ni l es- -Tor H. N ilsen Preliminary photointerpretation map of landslide and other surficial deposits of the Niles 7!:i ' quadrangle, Alame da Coun ty, Califo rn ia 41. Oakland East--Tor H. Nilsen Preliminary phot ointerpretation map of landslide and other surficial d eposits of the Oakland quadrangle, Contra Costa and Alameda Counties, California 42, Oakland West--Tor H. Nilsen Preliminary photointerpretation map of landslide and other surficial of the Oakland West 7\ ' quadrangle , Alame da and San Francisco Counties, Ca li fornia 43. Pacheco Pass--Tor H. Ni lsen Preliminary photointerpretation map of landslide and othe r surficial deposits bf part of the Pacheco Pass quadrangle, Santa Clara County, California 44. Pacheco Peak- -Tor H. Nilsen Preliminary photointerpretation map of landslide and other surficial deposits of the Pacheco Peak qua d rangle, Santa Clara County, California 45 . Port Chicago--Tor H. Ni lsen , Virgil A. Friz?.ell, and John D. Sims Preliminary photoint erpretation map of landslide and other surficial deposits of the Po r t Chicago quadrangle, Cont . ra Costa and Solano Counties , California 46 . Redwood Point--Tor H. _Nilsen 47. Preliminary photointerpretation map of landslide an r other Point 7\ ' quadrangla , Alameda County , California Richmond- -Tor H. Nilsen surf icial deposits of part of the Redwood Preliminary photointerpretation m ap of l andslide and other sur ficial deposits of the Richmond quad- rangle, Contra Costa and Alameda Counties , California 48 . San F elipe-- Tor H. Nilsen Preliminary photointerpretation map of landslide and surficia l deposits of part of the San Felipe quadrangle , San ta Clara County, California ....__ 49, - San Jose East-- Tor H. Ni lsen Prel iminary photoint erpretation map of landslide and other · s urficial deposits of the San Jose East quadrangle, Santa Cl ara Coun ty , California 50 . San Lea'ndro--Tor H. Nilsen Preliminary photointerpretation map of land sl ide and other surficial deposits of the San Leandro quadrangle, Alameda County, California 51. San Quentin--Tor H. Nilsen and Vi rg il A. Fr izzell, Jr. Preliminary phoiointerpretation map of lan dslide and other surfi cial deposits of the Sa n Quentin quadrangle, Marin , Contra Costa, and San Fran cisco Counties , C ali fornia .,-- 52. Santa Teresa H ills-- Tor H. Nilsen Preliminary photointerpretation map of landslide and other surficial deposits of part of the Santa Teresa H ills 7\' quadrangle, Clara County , California 53 . Tassajara--Tor H. Nil sen Preliminary photointer p reta t ion map of landslide and other s ur ficial deposits of the Tassajara quad- rangle, Contra Costa and Alameda Count i es , California Three Sisters--Tor H. Nilsen Preliminary photointerpretation map of landslide and other s ur fi cial deposits of pa r t of the Thre e Sisters quadrangle, Santa Clara Co unty, California 55 . Walnut Creek- - Tor H. Ni lsen Preliminary photointerpretation of landslid e and other surficial deposits of the Walnut Creek 7\ ' quadrangle, Cont ra Costa County, California 56 . Woodward Is land--To r H. Nilsen Preliminary phot olnte rp retatio n m <"lP of la ndslide and ot h er surf lcial deposits of part of the Woodwa rd Island quadrangle, Contra Costa County, California IND EX MAP •. I I _ _ _j

Transcript of TOR H. Nl LSEN - USGS · 2016-08-26 · 8. Briones Valley--Tor H. Nilsen Preliminary...

Page 1: TOR H. Nl LSEN - USGS · 2016-08-26 · 8. Briones Valley--Tor H. Nilsen Preliminary photointerpretation map of landslide and other surficial deposits of the Brianes Valley 7\' quadrangle,

This map is preliminary and has not been reviewed for conformity w ith

. U.S. Geological Survey standards and nomenclature.

PRELIMINARY PHOTOINTERPRETATION

QUADRANGLES, ALAMEDA, . I

(WITH PARTS OF ADJOINING COUNTIES

MAPS OF LANDSLIDE

CONTRA COSTA AND

TOR

ON SEVERAL MAPS

AND

BY

H.

BY

1975

U.S. GEOLOGICAL SURVEY OPEN Fl LE MAP

75·277

OTHER SURFICIAL DEPOSITS OF 56 7 1/2-MINUTE

CLARA COUNTIES, CALIFORNIA

Nl LSEN

JOHN A. BARTOW, VIRGIL A. FRIZZELL, JR. AND JOHN D. SIMS)

LIST OF MAPS

1. Altamont--Tor H. Nilsen

Preliminary photointerpretation map of l andslide and other surficial deposits of the Altamont 7~' quad­rangle, Alameda CountY, California

2. Antioch N6rth--Tor H. Nilsen and John D. Sims

Preli~inary pho t ointerpreta tion map of landslide and other surficial deposits of part of the Antioch North 7~ 1 quadrangle , Solano and Contra Costa Counties , California

3. Antioch South--Tor H. Nilsen

Preliminary photointerpreta tion map o f landslide a nd othe r sur f icial deposits of the Antioch South 7~' , quadr angle, Contra Costa Coun ty, California

4. Benicia--Tor H. Nilsen, Virgil A. Frizzell, Jr. , John D. Sims, and John A. Bartow

Preliminary pho t o interpre tation map of landslide and other surficial deposi t s of the Benicia 7~ ' quad­r~ngle, Contra Costa and Solano Counties , California

5. Bethany--Tor H. Nilsen

Preliminary photointerpretation map of landslide and other surficial deposits of part of the Be thany 7~ ' quadrangle , Alameda and Contra Costa Counties, California

6. Bouldin I s l and--Tor H. Nilsen

Prelim~nary pho t ointerpretation map of l andslide and other surficial deposits of part of the Bouldin Island 7~ ' quadrangle , Contra Costa County , California

7. , Brentwood--Tor H. Nilsen

Preliminary photointerpretation map of landslide and othe r surficial deposits of the Brentwood 7\' quad­rangle, Contra Costa County, California

8. Briones Valley--Tor H. Nilsen

Preliminary photointerpretation map of landslide an d other surficial deposits of the Brianes Valley 7\ ' quadrangle, Contra Costa and Alameda Counties, California

9. Byron Hot Springs--Tor H. Nilsen

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Preliminary photointerpretation map of landslide and other surficial deposits of the Byron Hot Springs 7\' quadrangle, Contra Costa and Alameda Counties, California

Calaveras Reservoir--Tor H. Nilsen

Preliminary photointerpretation map of landslide and othe r sur f icial deposits of the Calaveras Reservoir 7\' quadrangle , Alameda and Santa Clara Counties, Cal ifornia

11. Cedar Mtn. --Tor H. Nilsen

Prelimi nary photointe rpretation map of landslide and other surficial deposits of nart of t h~ c~:~ c Mtn. 7\ ' quadrangle, Alameda County, Californi.<l

1 2, Clayton--Tor H. Nilsen

Preliminary ' 'lhotoint Prpretat 'lon map of landslide and other ~ ~rf ic. i.:::.l d,:;,pcs::t:s of th<O c ::.a,vtu .. 7? ' .. ~uotd­rangle, Contra Costa County , California

13. Crevison Peak--Tor H. Nil sen

Preliminary photointerpretation map of landslide and other surficial deposits of part of t he Crevison Peak 7\' quadrangle , Santa Clara County, California

14 . Diablo--Tor H. Nilsen

Prelimin3ry photointerpretation map of landslide and othe r s urficial deposits of the Diablo 7~ ' quad­rangle, Contra Costa County , California

15. Dublin--Tor H. Nilsen

Preliminary photointerpretation map of landslide and other surficial deposits of the Dublin 7~ ' quad­rangle, Alameda and Contra Costa Counties, California

16. Eylar Mtn .--Tor H. Nilsen

Pre liminary photointerpretatfbn map of landslide an d other surficial deposits of the Eylar Mtn . 7~ ' quadrangle, S~nta Clara and Alameda Coun ties, California

-- 17. Gilroy--Tor H. Nilsen

Preliminary pho tointerpre t a t ion map of landslide an d other surficial deposits of part of t he Gilroy 7~' quadran~l.P , SantA C:L1r .1 Coun tv, C:rtli forn i 'l

------ 18. Gilroy Ho t Springs--Tor H. Nilsen

Pr eliminary photointerpretation map of landslide and other surficial deposits of ~he Gilroy Hot Springs 7~ ' quadrangle , Gan ta Clara County, California

19 . Hayward- -Tor H. Nilsen

Preliminary photointerpretation map of l ands lide an d other surficial deposits of the Hayward 7\' quad­rangle , Alameda County, California

20. Honker Bay--Tor H. Nilsen

Preliminary photointerpretation map of landslide and other surficial deposits of part of the Honker Bay 7~ ' quadrangle, Cont r a Co~ta County , Ca lifo r nia

21 . Isabel Valley-- Tor H. Nilsen

Preliminary photointerpretation map of lands lide and other surficial deposits of the I sabel Valley 7~ ' quadrangle, Santa Cla ra County , California

22 . Jersey Island--To r H. Nilsen and John D. Si ms

Preliminary photointerpretation map of landslide and other surfic ial deposits of part of the Jersey Island 7~' quadrangle , Contra Costa and S9lano Counties, Cal i fornia

23 . La Costa Valley--To r H. Nilsen

Preliminary photointerpretation- map of landslide and other surficial deposits of the La Cost~ Valley 7~ ' quadrangle, Alameda County, California

24. Las Trampas Ridge--Tor iL Nilsen

Preliminary photointerpretation map of landslide and other surfic i al deposits of t he Las Trampas Ridge 7\ ' quadrangle, Contra Costa and Alameda Counties, California

-- 25. Lick Observatory--Tor H. Nilsen

Preliminary pho tointerpretation map of landslide and other surficial deposits of the Lick Observatory 7~' quadran gle , Santa Cla r a County , Cal i fornia

26. Livermore--Tor H. Ni l sen

Preliminary photointerpretation map of landslide and other surf i c i al deposits of the Livermore 7\ ' quad­rangle, Alameda County, California

27. Mare Is land--Tor H. Nilsen

Preliminary photointer pretation map of l andslide and other surfici al deposits of part of the Mare Island 7\ ' quadrangle, Contra Costa County , California

28 . Mariposa Peak--Tor H. Nilsen

Preliminary photointerp retation map of l a nds lide and other surficial deposits of part of t he Mariposa Peak 7\ ' quadrangle; ~anta Clara County , California

29. Mendenhall Springs--Tor H. Nilsen

Preliminary photointe.I-pretation map of landslide and other s urficial depcsits of the Mendenha l l Springs 7\ ' quadrangle , Alameda County, California

~0 . Midway--Tor H. Nilsen

Preliminary photointerpret:ation map of lands lide and other surficial deposits of the Midway 7\' quad­rangle, Al ameda County, California

__.. 31. Milpitas--Tor H. Nilsen

Preliminary photo i nterpretation map of lands lide and ot her surfic i al deposits of the Milpitas 7~ ' quad­rangle, Alameda and Santa Clara Counties , California

..- 32 . Mississippi Creek-- Tor H. Nilsen

Pr eliminary photointerPretation map of landslide and other surficial deposits of part of the Mississippi Creek 7~ ' quadrangle, Santa Clara County, California

- 33. Morgan Hill--Tor H. Nilsen

Preliminary photointerpretation' map of landslide and other surficial deposits of the northeastern part of the Morgan Hil l 7\' quadrangle , Santa Clara County, California

34. Mt. Boardman--Tor H. Nilsen

Pieliminary photointerp retation map of l andslide and other surficial deposits of part of the Mt . Boardman 7\' quadrangle, San ta Clara County , Cali fornia

- 35. Mt. Day--Tor H. Nilsen

Prelimina~y photointerpretation map of landslide and other surficia l deposits of the Mt. Day 7~' quad­rangle, Santa Clara aqd Alameda Coun t;es , Califo~ia

_ 36. Mt. Sizer--Tor H. Nilsen

Prelimina ry photointerpretation map of landslide and o t her surfici~ deposits of the M~ . Sizer 7~ ' quad­rangle , Santa Clara Connty·, California

37. Mt . Stakes--Tor H. Nilsen

Preliminary photoin t erp reta t ion map of land~ and other surficial deposits of part of the Ht. Stakes P~' quadrangle , Santa Clara Connty, California ~ '

38 . Mus tang Peak--Tor H. Nilsen

Preliminary photo interpretation map of landslide and other surficial deposits of part of the Mustang Peak 7\' qua drangle, Santa Clara Coun ty, California

39. Newa rk- - Tor H. Nilsen

Pre liminary photoin.terpre t ation map of landslide and Other surficia l deposits of the Newark 7\ ' quad­rangle, Alameda County, Ca l ifornia

40. Nil es--Tor H. Nilsen

Preliminary photointerpretation map of landslide and other surficial deposits of the Niles 7!:i ' quadrangle, Alame da Coun ty, California

41. Oakland East--Tor H. Nilsen

Preliminary pho t ointerpretation map of landslide and other surficial deposits of the Oakland ~ast 7~' quadrangle, Contra Costa and Alameda Counties, California

42, Oakland West--Tor H. Nilsen

Preliminary photointerpretation map of landslide and other surficial deposit~ of the Oakland West 7\ ' quadrangle , Alameda and San Francisco Counties, California

43. Pacheco Pass--Tor H. Ni lsen

Preliminary photointerpretation map of landslide and othe r surficial deposits bf part of the Pacheco Pass 7~' quadrangle, Santa Clara County, California

44 . Pacheco Peak--Tor H. Nilsen

Preliminary photointerpretation map of landslide and other surficial deposits of the Pacheco Peak 7~' quadrangle, Santa Clara County, California

45 . Port Chicago--Tor H. Nilsen , Virgil A. Friz?.ell, and John D. Sims

Preliminary photointerpretation map of landslide and other surficial deposits of the Po r t Chicago 7~ 1

quadrangle, Cont.ra Costa and Solano Counties , California

46 . Redwood Point--Tor H. _Nilsen

47.

Preliminary photointerpretation map of landslide anr other Point 7\ ' quadrangla , Alameda County , California

Richmond- -Tor H. Nilsen

surf icial deposits of part of the Redwood

Preliminary photointerpretation map of l andslide and other sur ficial deposits of the Richmond 7~ 1 quad­rangle, Contra Costa and Alameda Counties , California

48 . San Felipe--Tor H. Nilsen

Preliminary photointerpretation map of landslide and surficia l deposits of part of the San Felipe 7~' quadrangle , San ta Clara County, California

....__ 49 , - San Jose East--Tor H. Ni lsen

Prel iminary photointerpretation map of landslide and other · s urficial deposits of the San Jose East 7~' quadrangle, Santa Clara County , California

50 . San Lea'ndro--Tor H. Nilsen

Preliminary photointerpretation map of landsl ide and other surficial deposits of the San Leandro 7~' quadrangle, Alameda County, California

51. San Quentin--Tor H. Nilsen and Vi rgil A. Frizzell, Jr.

Preliminary phoiointerpretation map of landslide and other surficial deposits of the San Quentin 7~' quadrangle, Marin , Contra Costa, and San Francisco Counties , California

.,-- 52. Santa Teresa Hills--Tor H. Nilsen

Preliminary photointerpretation map of landslide and other surficial deposits of part of the Santa Teresa Hills 7\' quadrangle, San~a Clara County , California

53 . Tassajara--Tor H. Ni l sen

Preliminary photointerpreta t ion map of landslide and other s urficial deposits of the Tassajara 7~ ' quad­rangle, Contra Costa and Alameda Count i es , California

~4 . Three Sisters--Tor H. Nilsen

Preliminary photointerpretation map o f landslide and other s urfi cial deposits of pa r t of the Three Sisters 7~ ' quadrangle, Santa Clara Co unty, California

55 . Walnut Creek-- Tor H. Ni lsen

Preliminary photointerpretation ~ap of landslide and other surficial deposits of the Walnut Creek 7\ ' quadrangle, Cont ra Costa County, California

56 . Woodward Is land--To r H. Nilsen

Preliminary pho t olnte rp retation m<"lP of l andslide and other surf lcial deposits of part of the Woodwa rd Island 7~ ' quadrangle, Contra Costa County, California

IND EX MAP

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