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JUXTAPOSED TERTIARY STRATA ALONG THE SAN ANDREAS FAULT IN THE TEMBLOR AND CALIENTE RANGES, CALIFORNIA
By J. G. Vedder channel deposits of a deep-sea fan. An U. S. Geological Survey additional 2,820 feet ( 860 m) of sandstone Menlo Park, California and shale was penetrated in an exploratory well, but it is not known whether these ABSTRACT strata are underlain by Upper Cretaceous sedimentary rocks or basement, or both. Remnants of Tertiary marine basins that Directly across the San Andreas fault, formerly transgressed the central segment however, wells have not penetrated Paleo- of the San Andreas fault are preserved in cene beds, and they may not be present the southern Coast Ranges. On opposite there. Along the north side of the San sides of the fault, rocks of the same age Emigdio Mountains, about 5 to 20 miles contain unlike stratal sequences that ( 8 to 32 km ) southeast of the Temblor record dissimilar paleoenvironments. Re- Range, basement rocks are overlapped by constructions based upon provenance and Eocene strata both at the surface and in depositional patterns suggest post-middle the subsurface. In the northern Temblor Miocene strike-slip separation of as much Range, Paleocene beds that are mostly as 185 miles ( 300 km ) and post-early younger than the Pattiway Formation are Pliocene separation of nearly 50 miles exposed, but their extent southward in the ( 80 km ). subsurface is in dispute ( Dibblee, 1973a ). INTRODUCTION In the southeastern Caliente Range, the type section of the nonmarine Simmler In the southeastern Temblor-and Caliente Formation is composed primarily of lenti- Ranges, late Cenozoic marine and nonmarine cular variegated beds of mudstone and sedimentary sequences that are separated sandstone with subordinate conglomerate. by the San Andreas fault represent sharply The formation is unconformable on the contrasting basin histories. Comparison Pattiway Formation, and most of the of thicknesses, depositional environments, sequence in the type area suggests a shoreline positions, source terranes and flood plain environment with local faunal facies across the fault reveal lacustrine conditions. Elsewhere in the striking mismatches, particularly in rocks region, particularly in the southeastern of Miocene age. Strata that are now La Panza Range and Cuyama Badlands, contiguous can be restored to their conglomeratic facies of the Simmler Forma- original position only by large scale tion imply deposition in coalescing strike-slip separation. Although the alluvial fans along an elongate, north- displaced counterparts of the rock units west-oriented basin ( Bartow, 1974). The described lie beyond the limits of the age of the formation is uncertain; it may area, they are briefly reviewed because incorporate strata as old as Eocene and regional palinspastic reconstruction and as young as early Miocene, but an timing of fault movement are contingent Oligocene (?) age generally is accepted. upon inferred amounts of offset. Northeast of the San Andreas fault, PALEOGENE opposite the type section of the Simmler Formation, it is inferred that marine strata deeply buried beneath the Temblor The Pattiway Formation, a marine mud- Range may be partly equivalent in age to stone, sandstone, and conglomerate unit of the lower beds in the Simmler; presumably Paleocene age ( Dibblee, 1973a; Vedder, in they include the upper beds of the Point press ), is exposed in the southeastern- of Rocks Sandstone and the Kreyenhagen most part of the Caliente Range ( Fig. 1 ). Shale ( H.C. Wagner, J.A. Bartow, and A 3,500-foot ( 1,070 m) outcrop section R.L. Pierce, unpub. data). In the north- ( Fig. 2,3), which displays much lenticular western Temblor Range, the Point of Rocks and truncated bedding and contains bathyal Sandstone probably represents bathyal foraminiferal assemblages, may represent fan deposition in a late Eocene sequence
234 CALIFORNIA DIVISION OF MINES AND GEOLOGY
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235 CALIFORNIA DIVISION OF MINES Al\ID GEOLOGY CALIENTE RANGE SOUTHEAST TEMBLOR RANGE provincial age Unit, stage or age, dominant rock types, local maximum thickness Provincial age Unit, stage or age, dominant rock types, local maximum thickness Pleistocene? Morales Formation (Blancan) pleistocene Paso Robles Fonnation (SW slope) , Tulare Formation (NE slope) I-? - nonmarineconglomerate, mudstone, sandstone 3,800 ft (1,160 m) .-*--- Il-*.Ill- shale-pebble gravel, nonmarine 1,700(?)ft (520 m) "Panorama Hills Formation" San Joaquin Formation Quatal Forruation (Hemphillian) Pliocene gravel,<036Jacalitos")nonmarine; unnamed EtchegoinsubsurfaceFormationonly Pliocene nonmarineclaystone, sandstone 1,000 ft (300 m) sandstone, marine 2,000 ft(610 m) 3,200 ft(975 m) Santa Margarita· Formation Bitterwater(Mohnian)Creek Shale Reef Ridge Shale (Mohnian;sandstone"Margaritan") Basalt claystone, shale subsurface(Delmontian?,onlyor Mohnian) marine 2,700 ft (820 m) F6rmationCaliente (Clarendonian) marine 3,000 ft(915 m) 500 ft(150 m) Whiterock Bluff Basalt Santa Margarita Formation rr • Shale(Luisian,MemberRelizian) (Barstovian) conglomerate,("Margaritan")sandstone /1rl MILure(Mohnian,ShaleLuisianMemb•r) • siliceous shale Branch Canyon marine3,000 ft(915 m) diatomaceousconglomerate,shale,sandstone . marine 500 ft (150 m) Sandstone("Temblorian") 1 lal«l't A*-**M#**Mv--*.%-0 marine 3,000 it(915 m) :0 Saltos Shale Member marine (Hemingfordian) Miocene Monterey Shale 1• mudstone,(Temblorian,siltstone,"Vaquerosian'042) 1,500 ft(460 m) mudstone, Gould(Luisian,and DevilwaterRelizian) Shale Members marine 3,800 ft(1,160 m) sandstone, marinesiliceous shale, sandstone,2,500 ft(760 m) Miocene Painted(Saucesian;Rock Sandstone"vaquerosian")Member nonmarineconglomerate • marinesandstone,5,SOOmudstone,ft(1,680conglomeratem) (Arikareean) Temblor Formation (8 named members) I 4,250 ft (1,300 m) (Relizian, Saucesian, Zemorriant • Soda,(Saucesian,Lake ShaleZemorrian;Member "Vaquerosian") sandstone,"Temblorian",claystone"Vaquerosian", unnamed) 2• mudstone,marine 2,400silistone,ft (730sandstonem) marine 7,800 ft(2,380 m) •IS(D Quail Canyon Sandstone Member Oligocene Wagonwheel(RefugianFormationin type area) > sandstone("Vaquerosian") subsurface (?) marine 500 ft (150 m) Point(Narizianof RocksinSandstonetype area) Simmler Formation Eocene subsurface (7) oligocene nonmarinesandstone, mudstone, conglomerate 3,800 ft (1,160 m) Kreyenhagen Shale -' --- subsurface(Narizian in(?)type area) Paleocene Pattiway("ynezian;Formation"Martinez") marinesandstone, mudstone, conglomerate 6,300 ft (1,920 m) Figure 2. Chart of Cenozoic stratigraphic units in the Caliente and Temblor Ranges. Stage names are applicable only to marine units that contain representative faunas. that may have been displaced about 200 NEOGENE miles ( 320 km) from similar rocks in the Santa Cruz basin (Clarke and Nilsen, Rocks of Miocene age are widely 1973)· Foraminiferal assemblages from the distributed in both the surface and sub- Kreyenhagen in the northern part of the surface sections on both sides of the San Temblor Range suggest a late Eocene age Andreas fault in the southern Coast (Narizian) and deposition at depths that Ranges, but the depositional environments include most of the bathyal zone in the southeastern Temblor Range are (R.L. Pierce, written commun., 1970) · strikingly different from those of strata Oligocene (Refugian and lower Zemorrian ) of the same age on the opposite side of strata have not been penetrated by wells the fault in the southeastern Caliente in the southeastern Temblor Range, but Range. For convenience of description, they may be present at greater depth, these successions are divided chrono- inasmuch as rocks of this age occur in logically into early, middle, and late, adjoinihg areas both to the northwest and following the usage of Addicott ( 1972), southeast. Equivalent rocks to the north- Savage and Barnes ( 1972), and Vedder west represent bathyal to abyssal marine ( 1973)· environments, and Lamb and Hickernell (1972) report bathyal marine Oligocene Early Miocene strata strata in a well about 5 miles (8 km) southeast of the Temblor Range. Offset Along the southwest edge of the San counterparts of the nonmarine Simmler Joac,Jin Valley in and adjacent to the Formation have not been identified, but Temblor Range near Taft, interbedded possibly correlative strata occur in the sandstone and shale units of early Soledad basin east of the San Gabriel Miocene age are as thick as 6,000 feet fault and at Cajon Pass east of the ( 1,830 m). Microfaunal assemblages San Andreas fault (Bartow, 1974). indicative of middle and lower bathyal depths suggest that these beds are 236 CALIFORNIA DIVISION OF MINES AND GEOLOGY
SW 5 to 1(•iles 2103miles 510A7miles ME • STAGE · CALIENTE RANGE CARRIZO PLAIN / SOUTHEASTER TEMBLOR RANGE . %=»=%*==0•"••••••0••••••••.•••••••0•••.••••••• ;0•.I:*1•K,4-CBE<(Iljll'S•NJ•9•IN2.i9i9.95i:*.:.:·:·:c·33:00•0.0•:ofKJ':c 1 1:t:036°°.::%::t·.:%.:31/3•...... $*-I.+•2..2.f...I&...../...1:•IS5RAMAHILL-S-F•.•%=»=32 Del•tion ··i···3.:·I:*:* I.:•0•002.1X&388:9••••••B•.(•i:fig0 BITTERWATER CREEK SHALE .•2;.,1•Vi,.I,•,2,•;,Bi'lr•dge.P·7175.i.te"••,#•",4,:f..161 Mohotan ::SANTA MARGARITA FM 2 •<'-:".:..3:•:••...••.•••••. SANTA MARGARITA FORMATION::': SANTA MARGARITA FMZ•ZZZ===--2- -- -Whiterock Blt!fErl )4:'34.'·' :.f''i:MaLure:'·:22:'...it·:::*..,4------Lulsian 906F-zShole Mbr--EEI ..>'if...... 7.7..· F.i, #.·..:1111111'•RS,9...... ···2;·:·MONTEREy•·,';:'·'·9.·,·•SHALE.'·*:4.*.3:. ,;·A·•f036f·L't:t.tf:,tit,*,•,,*.1,gi•.:,:••d,9,98,1...iR• - ONTEREY>.'.·1''·;" ...:r.....s.gndy lacieS..... 74..P.'*.i -'911- t....+ •Ps:,Iou'idi•3522:3•d92IEREf>%!4254 • Rell:ton •dto2;b••••,•:,•rf----SHKE.·,:...... ::.i<.,••.):··: · CANYON············BRANCHi:.rEi1 • •/·'.::··::•991.:e042'oo036o.°·.°.°.-.°3° --- -- FZShole MbrIE•E-----=ilt=-li4-=r-===--- 0 ·SANDSTONE : ': -·· '.110RM•T,1•1'.' -- - :rz--=r=ZP=••SmditoE••S254--i-.Il-.-- li - - Basalt t * -- W ------EE-1 -, Pantedf*322Rock9:•<;:I'•Sandstone: #.Mbr,•••••••il : ::1*:*< EifiERM • 7 -----P'--8z --- -i -- -- Soucesion - - ... f,AL 5 1 --'-*.,.. -%= TEMBLOR 1- Sandstone --OR FORMATION •.753.od'•-r•EF=E•'-*,VAQUER6FE>1:3Fbh,Iale• 94,- 6. FORMATION a FORM•,TION '--==Z13:"•- •J =EZZSandJ-JI-=-,-- -r·undifferentiatedz--' - -'Il---.-* .* Quall Canyon Sandstone M6, 400 7 0) -- 7 0•..0-#fgdGmmETZ:7'41..0 .. . 0 -I-·r- W«OC .•U) =- 8-'OD 0 0 . 0 a. .-/ •- Refugian •*:%;S.;•.,7...r:.TION.. . 5 .» (Absent/) .Z 0. Narizian 4£.1.2:7-31't:- -s" '· ... IL &'7'I"'•• P» ... : (Unknown) W KREYENHAGEN'--• POINT OF ROCKSSH.7-SANDSTONE 7 Wi Ulatision (Absent) Penutian (Unknown) i Bulitian :. -7 I ------7--- --5/31.t·:.HJ/gri"31FT • Yn.Zion PATT=t»3•=S•«»,
ME 5.:.129.j ...... toFromabyssolupperdepthbithyal toFromuppermiddlebathyalneriticdepth toFrommiddleinnerneriticnerilicdepth Nonmarinedeposits 1,500->6000fl.(450->1,80Om) 150-1,500ft.(45-45Om) 0-350ft.(0-11Om) Figure 3. Schematic stratigraphic diagram showing contrast in rock units and paleobathymetry across the San Andreas fault zone. probable correlatives of the Santos Shale Rock Sandstone Member in the southeastern and Agua Sandstone Members of the type part of the range, and the lowermost part Temblor Formation farther north(R.L. Pierce, of the nonmarine Caliente Formation. written commun., 1970). West of the fault in the Caliente Range, as much as 10,000 Offset counterparts of these early feet ( 3,050 m) of interbedded sandstone and Miocene strata are not known with claystone of the same age is exposed in the certainty. On the west side of the fault, vicinity of Caliente Mountain, where these more than 200 miles (320 km) to the north- rocks are assigned to the Vaqueros Forma- west, as much as 6,000 feet ( 1,830 m) of tion. The basin axis in which these beds marine strata, predominantly of deep- accumulated is 5 to 10 miles (8 to 16 km) water aspect, occur in the Santa Cruz west of the fault; from there the sandstone- basin and formerly may have been conti- claystone section thins and coarsens toward guous to the southern Temblor Range section the fault and intertongues eastward into (Addicott, 1968). Early Miocene marine nonmarine beds ( Fig. 3). From bottom to and nonmarine conglomeratic sandstone beds top, the subformational units involved are near Cajon Pass may be equivalent to the the bathyal Soda Lake Shale Member of the nearshore parts of the Caliente Range Vaqueros Formation in its type area, the sequence (Bartow, 1974). Ehlig (1973) shallow-marine lower part of the Painted suggests that correlative nonmarine strata 237 CALIFORNIA DIVISION OF MINES AND GEOLOGY
in the Soledad basin have been displaced but possible source terranes for 35 to 40 miles ( 55 to 65 km ) from the equivalent strata in the Cuyama Badlands Cuyama Badlands by post-early Miocene have been noted east of the Salton Sea right-slip movement along the San Gabriel by Ehlig (1973) that would require a fault system, an additional 135 miles ( 215 cumulative slip of approximately 185 miles km ) on the San Andreas fault, and 15 miles ( 300 km ) across the San Andreas fault ( 24 km) on the San Jacinto fault. system.
Middle Miocene strata Late Miocene strata
The microfaunal content of the shaly On the eastern flank of the south- beds in the upper part of the Temblor eastern Temblor Range, as much as 6,500 Formation and lower part of the Monterey feet ( 1,980 m ) of marine claystone and Shale in the southeastern Temblor Range shale in the Monterey Shale form the late indicates that the bulk of the middle Miocene succession. Closer to the fault Miocene section there was deposited in along the western edge of the range, a lower bathyal depths ( Fig. 3). Directly middle Miocene shale and sandstone section across the fault beneath the Carrizo is unconformably overlain by late Miocene Plain and in the Caliente Range, correla- breccia and sandstone beds that suggest a tive nonmarine beds in the middle part of high energy, shallow-water environment. the Caliente Formation grade successively These coarse clastics, which are assigned wistward into the Branch Canyon Sandstone to the Santa Margarita Formation, coarsen and Saltos Shale Member of the Monterey and thicken progressively westward but Shale, deposited in neritic and bathyal wedge out eastward into diatomite and environments ( Fig. 3 ). This oscillatory shale units within the upper part of shoreline trended north to northwest the Monterey Shale ( Fig. 3 ). These lenses ( Clifton, 1968 ), and the maximum amount of pebble to boulder size granite, of marine sedimentation probably occurred rhyolite, and schist detritus are mappable in a subsiding trough 7 to 10 miles ( 11 to for nearly 25 miles ( 40 km) along the west 16 km ) west of the fault. In the same area, edge of the southeastern Temblor Range and one of the several basalt flows, which presumably were derived from a precipitous seem to be restricted to the west side of coastal zone directly to the west. The the fault, shows eqidence of having flowed boulder beds of the Santa Margarita For- to the west-southwest across the shoreline mation are succeeded conformably by a late ( Clifton, 1967). Miocene lower bathyal to abyssal diatom- aceous claystone unit, the Bitterwater A discontinuous depositional trough that Creek Shale ( Vedder, 1970; Dibblee, 19734. seems to correspond to the truncated deep- On the opposite side of the fault in the water section of middle Miocene age in the southeastern Caliente Range, arkosic flood Temblor Range occurs west of the fault plain deposits in the late Barstovian and from the Gabilan Range north to Point early Clarendonian part of the Caliente Reyes, but the stratigraphic sequence Formation probably grade westward into there is thinner and the correlation is littoral marine sediments of the Santa not definitive. Nevertheless, the widths Margarita Formation west and northwest of of these truncated belts are comparable. Caliente Mountain ( Fig. 3 ), but the The southern margins are now separated by relations are obscured by overlapping a minimum distance of about 130 miles Quaternary beds along the Carrizo Plain. ( 210 km ), possibly as much as 180 miles The late Miocene nonmarine beds pro- ( 290 km) (Addicott, 1968, Fig. 4 ). gressively coarsen and thicken toward Dislocated equivalents of the middle the fault, and paleocurrent features Miocene nonmarine su-cession within the indicate transport from east to west middle part of the Caliente Formation ( Clifton, 1968 ). directly west of th6 fault have not been conclusively identified east of the fault, The most likely sources for the breccia
238 CALIFORNIA DIVISION OF MINES AND GEOLOGY
in the Temblor Range are the crystalline of the Caliente Range represent flood basement and volcanic rocks in the Gabilan plain and lacustrine conditions in late Range about 150 miles ( 240 km ) to the Clarendonian, Hemphillian, and early northwest ( Fletcher, 1967; Huffman, 1972 ). Blancan time ( Repenning and Vedder, 1961 ). Possible counterparts of the late Miocene Of these nonmarine units, only the locally shaly section in the Temblor Range occur derived Morales Formation is mapped east on the west side of the fault in the sub- of the San Andreas fault ( Dibblee, 1973b ). surface section near the southern part of The nearest marine strata on the west the Gabilan Range,.where the maximum side of the fault that may be the offset thickness Of the·shale unit is comparable equivalents of the Pliocene beds in the but the sediments represent a shallower Panorama Hills are about 1,500 feet ( 460 facies than those in the southeastern m) thick in exploratory wells near Temblor Range ( Addicott, 1968 ). These Shandon about 50 miles ( 80 km) to the relations suggest a separation of about northwest ( H.C. Wagner, J.A. Bartow, and 100 miles ( 160 km). East of the fault, R.L. Pierce, unpub. data ). neither equivalent strata nor a source terrane have been identified that seem to ACKNOWLEDGEMENTS be closely related to the late Miocene nonmarine section in the Cal iente Range. H. C. Wagner and D. G. Howell, U. S. Possible lithogenetically equivalent strata Geological Survey, reviewed the manuscript. are present in the Ridge basin and Soledad basin area between the San Andreas and REFERENCES CITED San Gabriel faults. A unique source for Addicott, W. 0., 1968, Mid-Tertiary zoo- the granitic detritus in the upper part of geographic and paleogeographic dis- the Caliente Formation remains unidentified. continuities across the San Andreas Pliocene strata fault, California, 1.[L Dickinson,W.R., and Grantz, Arthur, eds., Proc. of Bordering the east side of the fault, conference on geologic problems of along the west side of the Temblor Range San Andreas fault system: Stanford and in the Panorama Hills, marine mudstone Univ. Pubs. Geol. Sci., v. 11, p.144- and sandstone beds of probable early 165· Pliocene age extend as discontinuous out- , 1972, Provincial middle and late crops for approximately 7 miles ( 11 km) Tertiary molluscan stages, Temblor parallel to the fault. These strata are Range, California, in Stinemeyer, unconformable on the Bitterwater Creek E. H., ed., Proc. of Pacific Coast Shale and wedge out northward into non- Miocene Biostratigraphic Symposium: marine gravels that are assigned to the Soc. Econ. Paleontologists and Morales Formation by Dibblee ( 1973a,b). Mineralogists, Pacific Section, This marine unit, which formerly was in- Bakersfield, California, March 1972, cluded in Dibblee's (1962) Panorama Hills p. 1-26. Formation ( Fig. 3 ), probably is less than Bartow, J. A., 1974, Sedimentology of the 1,000 feet ( 330 m) thick. The clastic Simmler and Vaqueros Formations in content and fossil mollusks in the marine the Caliente Range - Carrizo Plain beds suggest that they were derived in part area, California: U.S. Geol. Survey from Miocene sedimentary rocks directly to open-file rep. 74-338, 163 p. the east and were deposited at neritic Clarke, S. H., Jr., and Nilsen, T. H., depths. On the opposite side of the fault, 1973, Displacement of Eocene strata there is no known marine Pliocene section and implications for the history of throughout the Carrizo Plain-Caliente offset along the San Andreas fault, Range region. Partly.correlative nonmarine central and northern California, in1 Kovach and Nur, eds., Proc. of strata in the uppermost part of the Caliente conference on tectonic problems of Formation, the Quatal Formation, and the Morales Formation along the northeast edge the San Andreas fault system,
239 CALIFORNIA DIVISION OF MINES AND GEOLOGY
Stanford Univ. Pubs. Geol. Sci., Huffman, 0. F., 1972, Lateral displace- v. 13, P. 358-367. ment of upper Miocene rocks and Clifton, H. E., 1967, Paleogeographic Neogene history of offset along the signif icance of two middle Miocene San Andreas fault in central basalt flows, southeastern Caliente California: Geol. Soc. America Bull., Range, California: U.S. Geol. Survey v. 83, no. 10, p. 2913-2946. Prof. Paper 575-B, p. 832-B39. Lamb, J. L., and Hickernell, R. L., 1972, , 1968, Possible influence of the The late Eocene to early Miocene San Andreas fault on middle and passage in Cal i fornia, in• Stinemeyer, probable late Miocene sedimentation, E. H., ed., Proc. of Pacific Coast southeastern Cal iente Range, -in Miocene Biostratigraphic Symposium: Dickinson, W. R., and Grantz, Arthur, Soc. Econ. Paleontologists and eds., Proc. of conference on geologic Mineralogists, Pacific Sect., problems of San Andreas fault system: Bakersfield, California, March 1972, Stanford Univ. Pubs. Geol. Sci., P. 63-88. v. 11, p. 183-190. Repenning, C. A., and Vedder, J. G., 1961, Dibblee, T. W., Jr., 1962, Displacements Continental vertebrates and their on the San Andreas rift zone and stratigraphic correlation with marine related structures in Carrizo Plain mollusks, eastern Caliente Range, and vicinity, ill Gui debook to the California: U.S. Geol. Survey Prof. geology of Carrizo Plain and San Paper 424-C, p. C235-239. Andreas fault: San Joaquin Geol. Savage, D. L., and Barnes, L. G., 1972, Soc. and Pacif ic Secs., 8m. Assoc. Miocene vertebrate chronology of the Petroleum Geologists and Soc. Econ. west coast of North America, inL Paleontologists and Mineralogists, Stinemeyer, E. H., ed., Proc. of p. 5-13, pl. 1. Pacific Coast Miocene Biostrati- , 1973a, Stratigraphy of the southern graphic Symposium: Soc. Econ. Coast Ranges near the San Andreas Paleontologists and Mineralogists, fault from Cholame to Maricopa, Pacif ic Sect., Bakersfield, California: U.S. Geol. Survey Prof. California, March 1972, p. 125-145. Paper 764, 45 p. Vedder, J. G., 1970, Geologic map of the , 1973b, Regional geologic map of Wells Ranch and Elkhorn Hills the San Andreas and related faults quadrangles, San Luis Obispo and in Carrizo Plain, Temblor, Caliente, Kern Counties, California, showing and La Panza Ranges and vicinity, juxtaposed Cenozoic rocks along the California: U.S. Geol. Survey Misc. San Andreas fault: U.S. Geol. Survey Geol. Inv. Map 1-757, scale Misc. Inv. Map 1-585, 2 sheets, scale 1:125,000. 1:24,000. Ehlig, P. L., 1973, Post-middle Miocene , 1973, Geologic framework and offset along the San Andreas fault correlation of Miocene rocks in the system in southern California [abs.]: Caliente Range, in Sedimentary Conference on tectonic problems of facies changes in Tertiary rocks-- the San Andreas fault system, California Transverse and southern Stanford Univ., June 20-23, 1973, Coast Ranges: Guidebook Trip 2, P. 19. Am. Assoc., Petroleum Geologists, Fletcher, G. L., 1967, Post-late Miocene Soc. Econ. Paleontologists and displacement along the San Andreas Mineralogists, and Soc. Expl. fault zone, central California, ill Geophysicists, Ann. Meeting, Anaheim, Marks, J. G036ed., Gabilan Range California, p. 42-53. and adjacent San Andreas fault: , 1975, Geologic map of the Cuyama Guidebook, Am. Assoc. Petroleum and New Cuyama quadrangles San Luis Geol. and Soc. Econ. Paleontologists Obispo and Santa Barbara Counties, and Mineralogists, Pacific Sect., California: U.S. Geol. Survey Misc. P· 74-80. Inv.Map 1-876, scale 1:24,000(inpr.ess.).
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