Geologic map and structure sections along the southern part of the Bartlett Springs Fault Zone and adjacent areas from Cache Creek to Lake Berryessa, northern Coast Ranges, California
Introduction Located in the Coast Ranges of northern California, the Bartlett Springs Fault Zone is the easternmost fault in the San Andreas Fault system in
Public-domain full text preserved in the Mountain Man Mining Library. Original source: pubs.usgs.gov.
KJgvl Jk Jom Josp Kfm Kfm Jk Jom Jom Josp Jom Josp QTc QTc KJgvl Cache Creek SULFUR BANKS FAULT BARTLETT SPRINGS FAULT ZONE COAST RANGE FAULT Qls Qls Jk QTc QTc Qls Qls Qls Qal Qoal Qt Qal Qt Qls Qls A T A T A T A A' METERS 1,000 −1,000 −2,000 −3,000 −4,000 −5,000 METERS 1,000 −1,000 −2,000 −3,000 −4,000 −5,000 NO VERTICAL EXAGGERATION Kfm Kfm Jk Jom Jom Josp Josp KJgvl KJgvl KJssp KJssp KJssp KJgvl mvbb ombu KJgvl Josp Josp Josp Josp Josp Josp Josp Jom Jom Morgan Valley Jim Dollar Mountain Jericho Valley Cache Creek Qlv Grizzly Peak HUNTING CREEK FAULT MORGAN VALLEY FAULT WILBUR SPRINGS ANTIFORM JERICHO VALLEY ANTIFORM SODA CREEK THRUST FAULT SODA CREEK THRUST FAULT COAST RANGE FAULT Qls Qoal omu Qoal Qoal Qls Qal A T A T A T METERS B B' 1,000 −1,000 −2,000 −3,000 −4,000 −5,000 METERS 1,000 −1,000 −2,000 −3,000 −4,000 −5,000 NO VERTICAL EXAGGERATION Kfm Kfm Jk Jom Jom Jk Josp Jk Josp Josp KJgvl Kv Knoxville HUNTING CREEK FAULT Blue Ridge Putah Creek COAST RANGE FAULT Qal Qal Qls Qls Qls Josp Josp msp msp A T A T METERS C' 1,000 −1,000 −2,000 −3,000 −4,000 METERS 1,000 −1,000 −2,000 −3,000 −4,000 NO VERTICAL EXAGGERATION KJgvl Josp Josp Josp Qlv Kfm Kfm Jk Jk Jom Jom BERYESSA FAULT ZONE Lake Berryessa (upper Putah Creek) COAST RANGE FAULT Qls Qal Qal Qal A T A T A T METERS 1,000 −1,000 −2,000 −3,000 −4,000 −5,000 METERS 1,000 −1,000 −2,000 −3,000 −4,000 −5,000 D D' NO VERTICAL EXAGGERATION Jk Jk Qlv Josp Josp Qls Qal Qal Qal Kfm Kfm KJgvl Jom BERRYESSA FAULT ZONE ? ? METERS −2,000 2,000 −4,000 −6,000 −8,000 −10,000 −12,000 METERS −2,000 2,000 −4,000 −6,000 −8,000 −10,000 −12,000 s6 s6' ? ? HUNTING CREEK FAULT METERS −2,000 2,000 −4,000 −6,000 −8,000 −10,000 −12,000 METERS −2,000 2,000 −4,000 −6,000 −8,000 −10,000 −12,000 s5 s5' ? HUNTING CREEK FAULT METERS −2,000 −2,000 −4,000 −6,000 −8,000 −10,000 −12,000 METERS −2,000 −2,000 −4,000 −6,000 −8,000 −10,000 −12,000 s4 s4' HUNTING CREEK FAULT METERS −2,000 2,000 −4,000 −6,000 −8,000 −10,000 −12,000 METERS −2,000 2,000 −4,000 −6,000 −8,000 −10,000 −12,000 s3 s3' ? Josp Qls Qoal Qlv Jk Josp Josp Josp Josp Kfm KJgvl KJgvl KJgvl Qls Qal KJssp KJgvl mvbb Jom Jom omu ombu HUNTING CREEK FAULT METERS 2,000 −2,000 −4,000 −6,000 −8,000 −10,000 −12,000 METERS 2,000 −2,000 −4,000 −6,000 −8,000 −10,000 −12,000 s2 s2' ? ? ? Josp Josp Josp Kfm KJgvl Qls Qt Qt Qal Qls Qls KJgvl Jk Jk Jom Jom Qtc Qtc SULFUR BANKS FAULT BARTLETT SPRINGS FAULT ZONE METERS 2,000 −2,000 −4,000 −6,000 −8,000 −10,000 −12,000 METERS 2,000 −2,000 −4,000 −6,000 −8,000 −10,000 −12,000 s1 s1' s2 s2' s1' s1 s3 s5 s5' s3' s4 s4' s6 s6' H U NTI N G R EEK F A U LT BER R Y ES SA F A U T N BS F 122°30' 39° 38°50' 38°40' 122°20' 5 KILOMETERS 3 MILES Line of section—Seismic data incorporated into cross section taken from area bounded by dashed lines Map area boundary Active faults Other faults Focal mechanism—For events Hypocentral depth (h), in kilometers 10<h≤12 EXPLANATION LOWER LAKE BENMORE CANYON WILBUR SPRINGS WILSON VALLEY GLASCOCK MOUNTAIN RUMSEY KNOXVILLE GUINDA JERICHO VALLEY MIDDLETOWN DETERT RESERVOIR AETNA SPRINGS WALTER SPRINGS BROOKS CHILES VALLEY LAKE BERRYESSA SALT CANYON CORTINA CREEK SAINT HELENA CALISTOGA 4, 5 5 KILOMETERS 3 MILES 39° 38°50' 122°30' 122°20' 38°40' Data sources—Diagonal lines shows where multiple source extents overlap Lawton (1956) Wagner (1975) Fox and others (1973); Graymer and others (2007) McLaughlin and others (2018) Map area boundary 7.5-minute topographic quadrangle boundary EXPLANATION 4, 5 Lake Berryessa 39° 38°55' 38°50' 38°45' 38°40' 38°35' 122°15' 122°20' 122°25' 122°30' 122°35' Shaded-relief base map from National Air and Space Administration Shuttle Radar Topography Mission global 30-meter digital elevation model (2013) Shorelines, place names, and roads from OpenStreetMap and its contributors, available under Open Database License (http:/www.openstreetmap.org/copyright) Berryessa Snow Mountain National Monument Cache Creek Wilderness Map area boundary EXPLANATION 5 KILOMETERS 3 MILES Figure 14. Map of seismicity in map area, showing earthquake epicenters (dots, colored by depth) and focal mechanisms for earthquakes that have moment magnitude (Mw) values larger than 3. Earthquake data are from northern California double-difference catalog (Waldhauser and Schaff, 2008; Waldhauser, 2009); focal-mechanism data are from U.S. Geological Survey (USGS) comprehensive earthquake catalog (USGS, 2017a). Thick red lines show active faults: Hunting Creek Fault, Berryessa Fault, and southern part of northern Bartlett Springs Fault (NBSF; fault traces are from Lienkaemper [2010, 2012]). Thin black lines show other faults that have unspecified sense of slip. Solid purple lines show locations of seismicity swath profiles (for example, s1—s1') shown in figure 15; dashed purple lines outline areas from which seismic events have been projected onto profiles. Figure 15. Seismicity swath profiles across map area; see figure 14 for locations of profiles. Profiles, which are 12 kilometers (km) deep, show seismic events (black dots) located within 2-3 km of either side of profile, projected onto profiles (see fig. 14 for dashed boxes that outline areas of projected seismic events). Red lines show active Quaternary faults (dashed where approximately located; queried where identity or existence is uncertain). Seismic profiles s1—s1', s2—s2', and s6—s6' occupy same section lines as cross sections A—A', B—B', and D—D', respectively (cross-section lines plotted on map on sheet 1); interpreted geology from sections A—A', B—B', and D—D' has been overlain onto seismic profiles s1—s1', s2—s2', and s6—s6' for reference (see List of Map Units [on sheet 1] for map-unit identifications). Figure 2. Shaded-relief map showing map area and locations of Lake Berryessa, Berryessa Snow Mountain National Monument, and Cache Creek Wilderness. Also shown are major roads (red and gray lines); small lakes omitted for simplicity. Figure 3. Map showing map area in relation to 7.5-minute U.S. Geological Survey topographic quadrangles in and around map area. Also shown are sources of previously published geologic map data (2-6); not shown is new mapping from this report (white areas inside thick red line). Geologic Map and Structure Sections Along Part of the Southern Bartlett Springs Fault Zone and Adjacent Areas from Cache Creek to Lake Berryessa, Northern Coast Ranges, California By Benjamin L. Melosh, Jackson Bodtker, and Zenon Valin Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government This map or plate is offered as an online-only, digital publication. Users should be aware that, because of differences in rendering processes and pixel resolution, some slight distortion of scale may occur when viewing it on a computer screen or when printing it on an electronic plotter, even when it is viewed or printed at its intended publication scale Digital files available at https://doi.org/10.3133/sim3514 and https://doi.org/10.5066/P1YJRCZD Suggested citation: Melosh, B.L., Bodtker, J., and Valin, Z., 2024, Geologic map and structure sections along the southern part of the Bartlett Springs Fault Zone and adjacent areas from Cache Creek to Lake Berryessa, northern Coast Ranges, California: U.S. Geological Survey Scientific Investigations Map 3514, 2 sheets, scale 1:24,000, 20-p. pamphlet, https://doi.org/10.3133/sim3514. Associated data for this publication: Melosh, B.L., Bodtker, J.W., Valin, Z.C., and Sullivan, K., 2024, Geospatial database of the geologic map and structure sections along the southern part of the Bartlett Springs Fault Zone and adjacent areas from Cache Creek to Lake Berryessa, northern Coast Ranges, California: U.S. Geological Survey data release, https://doi.org/10.5066/P1YJRCZD. ISSN 2329-132X (online) https://doi.org/10.3133/sim3514 U.S. Department of the Interior U.S. Geological Survey Scientific Investigations Map 3514 Sheet 2 of 2 Pamphlet accompanies map
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