A U LT A'' B' B A A' 30 3 10 11 17 19 24 20 33 18 22 8 18 20 23 17 10 18 24 37 27 28 32 7 18 80 78 30 55 80 80 31 23 23 77 58 45 64 70 51 28 40 10 4 13 41 53 31 73 72 68 45 43 40 75 43 40 41 40 34 15 3 7 19 25 33 23 63 82 70 32 30 68 47 42 37 56 25 15 62 53 21 5 65 50 38 43 35 77 33 20 20 18 35 6 87 22 40 15 36 27 19 14 75 65 35 58 17 38 35 6 22 80 58 21 12 24 10 6 45 30 5 42 17 35 22 37 19 18 15 70 25 16 61 70 32 40 60 48 70 85 5 13 74 73 73 24 54 4 62 85 72 15 70 45 43 7 3 6 24 5 52 11 86 57 23 10 18 88 84 57 40 57 36 53 58 40 32 25 36 33 12 8 15 8 64 3 7 20 27 18 30 48 24 78 36 78 12 46 10 22 38 82 86 73 38 60 75 37 19 25 26 70 68 62 60 78 47 37 25 6 45 50 28 35 30 53 19 20 42 22 19 53 62 51 23 50 86 45 6 10 39 12 37 32 78 49 45 50 37 33 25 31 3 16 80 5 33 30 3 89 10 55 49 7 38 21 53 51 60 74 10 2 14 12 25 31 44 42 48 35 35 40 40 47 32 27 10 40 13 13 42 21 33 15 18 30 20 35 30 33 9 20 50 23 40 34 35 30 25 35 33 40 35 30 32 32 25 50 35 35 40 40 15 12 16 21 51 19 89 45 80 41 34 50 50 52 28 63 32 20 23 80 27 38 60 37 22 28 28 64 23 60 8 14 9 40 35 25 40 25 15 8 15 15 30 25 17 32 20 15 45 35 35 35 33 35 35 23 45 30 52 24 32 15 33 62 13 73 22 14 61 70 53 25 58 25 40 50 39 40 38 56 36 51 25 13 33 75 43 40 34 25 82 30 35 Tcau Qac Qmac Tcc Tcg Tcg Tqc Tqb Tm Tcal Tcau Tqb Tcc Qa Qoa Tcc Tcc Qls Tcc Tps Tpl Tpl Tpl Tpb Tpb Tps Tps Tpbn Tps Tps Tpb Tps Qmac Tcv Tm Tpb Tps Qoa Qoa Tcv Tlc Tcau Tqb Tcc Tcau Tcp Tqc Tqb Tqb Tqb Qac Qac Qac Qoa Qoa Tcv Tcv Qmac Tlc Tlc Qmac Qmac Tcv Tcv Qmac Tcp Tjsh Tcv Tcv Tcv Tcv Qmac Qmac Qma Qmac Tcau Tcv Tcp Tcp Tpb Tcc Tcv Tcv Tjsh Qoa Tcv Qoa Tm Qoa Qac Tqb Qmac Tqb Tqb Tjsh Tjsh Tjs Tjm Qma Qma Qma Tcl Tcl Qols Qls Qls Tjs Tjs Qbd Qbd Qbd Qbd Qbd Qbd Tcg Qoac Tlc Tcc Trd Trd Trd Qa Qoa Tjsh Tjsh Qoa Qoa Qoa Tjsh Tjsh Tjc Tjsh Tjsh Qma Qma Tjsh Qya Tjs Tma Tjs Qls Qls Tjm Qma Qac Qls Qls Tjm Tjm Tma Tjsh Tjsh Tjsh Qma Tjs Qma Qmac Tma Tjs Tjm Tjm Tjm Qac Tjm Tjm Tma Tma Tmam Tjs Qac Qac Qac Qac Qmac Qma Qls Tjsh Tjsh Tjm Qac Tjm Tjm Tjs Tjm Tjs Tjs Tjs Tjsh Trd Trd Tjsh Tma Tma Tma Tma Tma Tma Tmam Tmam Tmam Tcd Tcd Tcd Tcd Tcds Tcds Tcds Tma Tmam Tcd Tmam Tma Tmam Trd Tjs Tjs Tjsh Tm Tm Tm Tjm Tjs Tjs Tjm Tjm Tjm Tjsh Tjsh Tjm Qoac Tjm Tcc Qya Qya Qya Qya Qa Qya Qa Qa Qa Tcg Tcc Tjs Tjs Tjsh Tjs Tcg Tjm Tjs UNCONFORMITY UNCONFORMITY UNCONFORMITY LOCAL UNCONFORMITY Holocene Pleistocene Oligocene Eocene Pliocene Miocene ? ? ? ? QUATERNARY TERTIARY ? LOCAL UNCONFORMITY CORRELATION OF MAP UNITS Contact--Long-dashed where approximately located; short-dashed where inferred; invisible where arbitrarily located or conjectural Fault--Long-dashed where approximately located; short-dashed where inferred; dotted where concealed; ball and bar on apparent downthrown side; pair of opposing arrows show sense of strike-slip component of movement; tic shows direction and amount of dip; arrow shows trend and plunge of slickenside striae Thrust fault or moderately dipping reverse fault--Long-dashed where approximately located; short-dashed where inferred; dotted where concealed; sawteeth on upthrown block; tic shows direction and amount of dip; arrow shows trend and plunge of slickenside striae Shear zone Fold axial traces--Dashed where approximately located or inferred; dotted where concealed; solid arrows show direction of plunge of fold axes Anticline Upright Overturned Syncline Upright Overturned Marker beds Sandstone Conglomerate Landslide headwall scarp--hachures on slide block Strike and dip of beds Inclined Horizontal Overturned Approximate Strike and dip of beds (after Dibblee, 1979) Drill hole EXPLANATION OF MAP SYMBOLS Modern alluvium (Holocene) Modern and young alluvium and colluvium (Holocene and Pleistocene?) Landslide deposits (Holocene and Pleistocene?) Young alluvium (Holocene and Pleistocene?) Middle alluvium (Pleistocene) Middle alluvium and colluvium (Pleistocene) Old alluvium (Pleistocene) Old alluvium and colluvium (Pleistocene) Old landslide deposit (Pleistocene) Boulder diamicton (Pleistocene) Morales Formation (Pliocene?) Juncal Formation (Eocene) Sandstone facies Interbedded sandstone, siltstone, and shale facies Siltstone and shale facies Conglomerate facies Matilija Sandstone (Eocene) Interbedded sandstone and shale facies Sandstone facies Cozy Dell Shale (Eocene) Rhyolitic dikes (Oligocene) Gneissic breccia facies Lacustrine facies Arkosic sandstone facies Breccia facies Plush Ranch Formation (Miocene and Oligocene?) Quatal Formation (Pliocene?) Fluvial sedimentary rocks Calcareous sandstone and diatomite Lockwood Clay (Pliocene?) Caliente Formation (Miocene) Upper arkosic-lithic sandstone facies Conglomerate facies Variegated sedimentary facies Clay-rich sedimentary facies Granitic fanglomerate facies Lower arkosic sandstone and breccia facies Basal breccia facies MAP UNITS PRELIMINARY GEOLOGIC MAP OF THE SAN GUILLERMO MOUNTAIN QUADRANGLE, VENTURA COUNTY, CALIFORNIA By Scott A. Minor Version 1.0 1999 This map is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic code. North American Datum of 1927 (NAD 27). Projection and 10 000-foot grid ticks: California Coordinate System, zone 5 (Lambert Conformal Conic). 1000-meter Universal Transverse Mercator grid, zone 11 Geology mapped by S.A. Minor 1996-1998. Digital compilation by S.A. Minor, O. Young, and T. Brandt. OPEN FILE REPORT 99-032 U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY CONTOUR INTERVAL 40 FEET NATIONAL GEODETIC VERTICAL DATUM OF 1929 PIEDRA SYNCLINE BLANCA B I G PI NE L OCK WO O D VALLEY FAU L T F ZO NE SCALE 1: 24 000 1 MILE 1 1/ 2 0 7000 FEET 1000 1000 0 2000 3000 4000 5000 6000 .5 1 KILOMETER 1 0 14 APPROXIMATE MEAN DECLINATION, 1991 TRUE NORTH MAGNETIC NORTH QUADRANGLE LOCATION CALIF Tcp Tcal Tcg Tcl Tcv Tcc Tcau Tlc Tqc Tqb Tm Qbd Qols Qoac Qoa Qmac Qma Qya Qls Qac Qa Tjs Tjm Tjsh Tjc Tma Tmam Tcd Tcds Tps Tpl Tpbn Tpb Tcal Tcc Tcp Tcg Tcc Tcv Tcau Tlc Tcl Tqb Tqc Tm Qoa Qma Qya Qa Qoac Qmac Qac Qbd Qols Qls Trd Tpb Tps Tpl Tpbn Tcd Tcds Tma Tmam Tjs Tjm Tjsh Tjc Trd San Guillermo Mountain quadrangle NACIMIENTO FAULT BIG Cuyama Valley PINE San Rafael Mtns. Sierra Madre Mtns. HILDRETH FAULT MUNSON CREEK FAULT FAULT Cuyama River Cuyama Badlands SAN ANDREAS FAULT San Emigdio Mtns. Mt. Pinos Lockwood Valley Frazier Mtn. 0 5 10 15 KM PINE MOUNTAIN FAULT OZENA FAULT 119˚ 00' 119˚ 30' 119˚ 00' 119˚ 30' 34˚ 45' 34˚ 45' TECTONIC INDEX MAP gneissic and granitic basement rocks? WAGON ROAD CANYON BEND IN Alamo Creek A Beartrap Creek PIEDRA BLANCA SYNCLINE PINE MOUNTAIN A' 2000 3000 4000 5000 6000 7000 FEET BIG PINE FAULT LOCKWOOD VALLEY FAULT SECTION A'' ? ? ? ? ? ? ? ? ? ? gneissic and granitic basement rocks? B Cedar Creek Piru Creek SAN GUILLERMO MOUNTAIN BIG PINE FAULT LOCKWOOD VALLEY FAULT ZONE B' 7000 6000 5000 4000 3000 2000 1000 FEET ? ? ? ? ? ? ? ? 6000 5000 4000 3000 2000 FEET 2000 1000 3000 4000 5000 6000 7000 FEET Tcds Tcd Tcd Tcd Tmam Qac Tma Qma Tma Tjsh Tjs Tjm Tjm Tjm Tjs Tjsh Tcau Tcv Tcc Tpb Tps Tps Tcg Tcc Tpl Tpl Tpb Qoa Tcv Trc Tcg? Tjs Tjsh Tjsh Tjsh Tjsh Tjm Tjsh Tjsh Tjsh Tjs Tma Tma Tjsh Tjs Tjsh Tjsh Tjs Tjs Tjc Qya Tjsh Tjsh Tjs Tjsh Qya Qa Qma Tjsh Tjsh Tjc Qya Tjc Tjsh Tjsh Tjs Tcg Tjs Tjsh Tcg Tj? Tcg? Tcv Tcau Tqb Tcv Tlc Tcc Tcau Tqb Tcv Tcau Tcc Tcp Tpb Tps Tpb Tps Qbd