MISCELLANEOUS FIELD STUDIES MAP MF–2373 U.S. DEPARTMENT OF THE INTERIOR Sheet 7 of 8 U.S. GEOLOGICAL SURVEY Pamphlet accompanies map STRUCTURE SECTIONS OF THE LOS GATOS QUADRANGLE A A' A'' A''' A'''' FEET FEET (BEND) (BEND) 4000 (BEND) 4000 BUTANO SAN ANDREAS ALDERCROFT BERROCAL FAULT SHANNON FAULT FAULT ZONE FAULT ZONE ? ZONE FAULT ? 3000 Laurel Summit fmv ZONE 3000 fm Anticline Syncline fmc fmv fms Highway 17 Highway fmc fm 2000 Tsr Joi fmv 2000 fmv Qls Los Gatos Creek fms Qls Qls Tv Qls Qal Qt Qls fmc fm Burns Creek ? Qls fm Jos ? Kus Jos ? Jov ? Ttv Tt mine tailings Qls Jos g KJm fm Tms fm Jos 1000 ? mine tailings fm Tms Qpf 1000 Qls sc Tt Jos fm sc sc Tms Tt Tcml Tcm ? ? Qal Ttv g Tp Joi Tt fm Tst Tbu Tbu fm fm sc Tt Tcml Tv fms fpv sc fm g Tp Tls fmc Jos Tp fpv sc SEA LEVEL fm Tcm? ? Tt sc fm SEA LEVEL g fpl Jos Tbu sc fpv fm? Tcm KJm fm fm ? ? Joi fm QTsc? g Jos fms? Jos Jos Kus? Kus? fm ? fpv Tcm Tsr Tsr? Jov fpl Ttv -1000 Tsr ? Jos ? -1000 Tbu fm? EXPLANATION Jog ? Tst Jos -2000 -2000 ? Jos Strike-slip fault(-) Denotes block movement away from viewer; Jou - + ? (+) denotes block movement toward viewer -3000 -3000 - + ? Principal trace of the San Andreas faultDashed where -4000 -4000 + - approximate -5000 -5000 ? Dip-slip faultArrows denote relative vertical motion of fault blocks ? Jo* ? -6000 FAULT(?) -6000 Tbu? Surface locationOil drill hole ? -7000 Tbu? -7000 -8000 -8000 ? RANGE -9000 -9000 ? -10000 Jo* *Jo on structure sections delineates undivided -10000 rocks of the Coast Range ophiolite -11000 ? -11000 ? ? -12000 COAST -12000 ? ? -13000 ? Jmb -14000 -15000 SIERRA AZUL STRUCTURAL BLOCK -16000 SAN SARGENT HOOKER GULCH SIERRA SODA B B' B'' ANDREAS FAULT ZONE FAULT ZONE AZUL SPRING FEET FAULT ZONE FAULT FAULT FEET -17000 4000 (BEND) ZONE ZONE 4000 v Kus Tls -18000 3000 3000 Tls Kuc Jos Qls fms Tls ? Jou Kuc 2000 Tls Tcm Jos fm 2000 -19000 Tv Tcm fms Los Gatos Creek Jos Tls (Elsman Reservoir) ? Tcm KJm D D' Kus Jov Tls Kus Jog 1000 Kus Kus Tcm 1000 -20,000 FEET LEXINGTON FEET Jog Kuc Tcm Jou 2000 FAULT ZONE 2000 Jov Tcm Kus ? Kus Kuc Kus Lexington v KJm Jou -21,000 SEA LEVEL Kuc Jos SEA LEVEL Reservoir Kuc Qls QTsc Qt Qt QTsc Joi 1000 QTsc QTsc QTsc Qt 1000 Kus Kus Kus Qal fm Kuc Joi fm -1000 -1000 -22,000 QTsc QTsc Kuc fms Kuc fm Tcm SEA LEVEL QTsc SEA LEVEL Kuc Joi Kuc fm? -2000 -2000 fm? fm v -1000 - + -1000 Kuc Jog KJm KJm Jos -? +? KJm -3000 ? -3000 Jo* -2000 -2000 +? -? Jo* -4000 *Jo on structure sections delineates undivided -4000 Jo* Jo* rocks of the Coast Range ophiolite -3000 -3000 -5000 - + -5000 -4000 -4000 - + -6000 FAULT? FAULT? KJm C OAST RANGE -7000 Franciscan Franciscan Complex? -8000 RANGE Franciscan Complex? Complex? Jo -9000 -10000 COAST -11000 Jmb -12000 -13000 -14000 -14000 BUTANO SAN ANDREAS FAULT ZONE SODA SPRINGS LIME KILN BERROCAL SHANNON C FAULT C' FAULT ZONE FAULT ZONE FAULT ZONE FAULT ZONE C'' FEET FEET Summit (BEND) 3000 3000 Syncline Soda Springs Lime Kiln 2000 Canyon Canyon 2000 Hendrys Creek Qls Qls Qls Union Oil Holy City #1 Qls fm Qls Qls g Qls Qal fpv Mountain Charlie Gulch g Jos Qpf QTsc g Tv? Qal Los Gatos Creek fm fm QTsc Qpf 1000 g fpv 1000 Tv fms fm fm Tms QTsc g g g fm QTsc? g Jog? Tls ? g fms g g g fms fms Tms Jos fms Tms SEA LEVEL Jov ? fms Jos fms Tms SEA LEVEL g fpl Tus g Tt g g Tms Tv Tsr g fms Tsr Tst Tbu fms Jos g Tt Tsr? ? g fm fm? -1000 g g fpv Tt -1000 g fpl fpv? g fpl g Tbu fpv g Jos fpv g g fm g Jog fm? g g + - Jos? Tt? -2000 g fm -2000 g fm? g Tsr? Jov? g g g g g g g g g Tst g Kus? ? -3000 g -3000 g ? Jos T.D. 4659' -? +? KJm? -4000 -4000 - + -5000 Jov -5000 Jos -6000 -6000 -7000 -7000 STRUCTURE SECTION OF THE SANTA TERESA HILLS QUADRANGLE Approximate Location, Axis of Uvas Antiform A A' A'' SHANNON FEET BERROCAL FEET FAULT ZONE FAULT ZONE 3000 Bald (BEND) 3000 Mountain fmv ? 2000 2000 ? Qls fm sc sc fm fmv Tms am sc sc fm Jos ? fms fmv fm Tt sc sc fmv v Jos Santa Teresa Santa Clara fms fm Jos Jos Los Capitancillos Creek am fm Hills Valley ? Jos fmv Jos fm sc Jos (partly Qls) 1000 fm fmv Tcm 1000 ? fm Jos Tt Jos Alamitos Creek Qal v fm fmv Qhf Qhc Qhc Qhf Qhc Qal fm sc Qpf Qhb Qhl fmv Qpf Qpf Jos fm fm? sc fm QTsc? Jos Kus Tcml Jos fm ? ? SEA LEVEL ? QTsc? Jos ? ? ? ? SEA LEVEL ? ? ? ? fm? ? ? ? ? fm fm Jos fm? fm fm fm? ? ? fm Jos Jos -1000 ? -1000 fm fm ? -2000 ? -2000 ? -3000 ? -3000 This section derived in-part from that -4000 of Bailey and Everhart, 1964, Plate 1 -4000 -5000 -5000 -6000 -6000 Edited by J.L. Zigler Manuscript approved for publication July 20, 2001 Any use of trade, firm, or product names in this publication is GEOLOGIC MAPS AND STRUCTURE SECTIONS OF THE SOUTHWESTERN SANTA CLARA VALLEY AND for descriptive purposes only and does not imply endorsement by the U.S. Government. This map was printed on an electronic plotter directly from SOUTHERN SANTA CRUZ MOUNTAINS, SANTA CLARA AND SANTA CRUZ COUNTIES, CALIFORNIA digital files. Dimensional calibration may vary between electronic plotters and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions; therefore, scale and proportions may not be true on plots of this map. For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 1-888-ASK-USGS Digital files available on World Wide Web at http://geopubs.wr.usgs.gov/map-mf/mf2373.