Janet T. Watt Stephen R. Hartwell Samuel Y. Johnson Ray W. Sliter Eleyne L. Phillips Stephanie L. Ross John L. Chin 2014 Vector digital data Data Series DS 781 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ds781 https://pubs.usgs.gov/ds/781/ https://pubs.usgs.gov/ds/781/BolinasToPescadero/data/Isopachs_BolinasToPescadero.zip Nadine E. Golden 2013 database Data Series DS 781 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/ds/781/ This part of DS 781 presents data for the isopachs for the Bolinas to Pescadero, California, region. The vector data file is included in "Isopachs_BolinastoPescadero.zip," which is accessible from https://pubs.usgs.gov/ds/781/BolinasToPescadero/data_catalog_BolinasToPescadero.html. As part of the USGS's California Seafloor Mapping Program, a 50-m grid of sediment thickness for the seafloor within the 3-nautical-mile limit of California's State Waters between offshore Offshore Bolinas and offshore Pescadero was generated from seismic-reflection data collected between 2006 and 2010, supplemented with outcrop and geologic structure (fault) information following the methodology of Wong (2012). Reference Cited: Wong, F. L., Phillips, E.L., Johnson, S.Y., and Sliter, R.W., 2012, Modeling of depth to base of Last Glacial Maximum and seafloor sediment thickness for the California State Waters Map Series, eastern Santa Barbara Channel, California: U.S. Geological Survey Open-File Report 2012-1161, 16 p. (available at https://pubs.usgs.gov/of/2012/1161/) These data are intended for science researchers, students, policy makers, and the general public. This information is not intended for navigational purposes. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information. Additional information about the field activities from which this data set was derived are available online at https://cmgds.marine.usgs.gov/fan_info.php?fan=F207NC https://cmgds.marine.usgs.gov/fan_info.php?fan=L106SF https://cmgds.marine.usgs.gov/fan_info.php?fan=S809NC https://cmgds.marine.usgs.gov/fan_info.php?fan=S1510NC https://cmgds.marine.usgs.gov/fan_info.php?fan=S1610NC Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology. 2007 2010 ground condition Complete None planned -122.784697 -122.407086 37.946123 37.229799 USGS Metadata Identifier USGS:02a1759f-389e-46bc-9453-3722c597af7a USGS Thesaurus marine geology seismic reflection methods maps and atlases stratigraphic thickness geospatial datasets Marine Realms Information Bank (MRIB) keywords sediment deposition seismic reflection profiling None coastal geology sediment thickness seismic isopach ISO 19115 Topic Category environment geoscientificInformation oceans Data Categories for Marine Planning Physical Habitats and Geomorphology Distributions Geographic Names Information System Pacific Ocean State of California San Gregorio San Mateo County Pescadero none USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. This information is not intended for navigation purposes. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060-5792 US 831-427-4747 pcmsc_data@usgs.gov https://pubs.usgs.gov/ds/781/BolinasToPescadero/images/Isopachs_BolinasToPescadero.jpg map of sediment thickness contours JPEG Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 10.0 Data points are approximately 1 m apart along tracklines and 1000-2000 m apart between tracks. 50-m cell size for interpolation is better supported along track than between. All vector geometry and attributes present. Sediment thickness data points exported from Seisworks profiling software were processed within the California 3-nmi limit. The chirp sonar instrument is deployed under the research vessel with about 10m of variation in position. The sparker position may vary as much as 20m from the navigation reference on the vessel. U.S. Geological Survey (USGS), Coastal and Marine Geology Program (CMGP) 2011 Menlo Park, CA U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) http://cmgds.marine.usgs.gov/fan_info.php?fan=S1510NC ASCII lat/long shot point files 20100802 20100804 ground condition S-15-10-NC Digital seismic data used to interpret subsurface geologic structure U.S. Geological Survey (USGS), Coastal and Marine Geology Program (CMGP) 2011 Menlo Park, CA U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) http://cmgds.marine.usgs.gov/fan_info.php?fan=F207NC ASCII lat/long shot point files 20070322 20070406 ground condition F-2-07-NC Digital seismic data used to interpret subsurface geologic structure U.S. Geological Survey (USGS), Coastal and Marine Geology Program (CMGP) 2011 Menlo Park, CA U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) http://cmgds.marine.usgs.gov/fan_info.php?fan=L106SF ASCII lat/long shot point files 20060925 20061003 ground condition L-1-06-NC Digital seismic data used to interpret subsurface geologic structure U.S. Geological Survey (USGS), Coastal and Marine Geology Program (CMGP) 2011 Menlo Park, CA U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) http://cmgds.marine.usgs.gov/fan_info.php?fan=S1610NC ASCII lat/long shot point files 20100805 20100808 ground condition S-16-10-NC Digital seismic data used to interpret subsurface geologic structure U.S. Geological Survey (USGS), Coastal and Marine Geology Program (CMGP) 2011 Menlo Park, CA U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG) http://cmgds.marine.usgs.gov/fan_info.php?fan=S809NC ASCII lat/long shot point files 20090908 20090930 ground condition S-8-09-NC Digital seismic data used to interpret subsurface geologic structure Johnson, S.Y. Greene, H.G. Manson, M.W. Hartwell, S.R. Endris, C.A. Watt, J.T. 2014 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshoreBolinas/data/Geology_OffshoreBolinas.zip https://pubs.usgs.gov/ds/781/OffshoreBolinas/data_catalog_OffshoreBolinas.html shapefile 2006 2009 ground condition BolinasGeology used to determine bedrock outcrops Johnson, S.Y. Greene, H.G. Manson, M.W. Hartwell, S.R. Endris, C.A. Watt, J.T. 2014 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshoreBolinas/data/Faults_OffshoreBolinas.zip https://pubs.usgs.gov/ds/781/OffshoreBolinas/data_catalog_OffshoreBolinas.html shapefile 2006 2009 ground condition BolinasFaults faults were used to interpret subsurface geologic structure Greene, H.G. Johnson, S.Y. Manson, M.W. Hartwell, S.R. Endris, C.A. Bruns, T.R. 2014 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshoreSanFrancisco/data/Geology_OffshoreSanFrancisco.zip https://pubs.usgs.gov/ds/781/OffshoreSanFrancisco/data_catalog_OffshoreSanFrancisco.html shapefile 2006 2010 ground condition SanFranGeology used to determine bedrock outcrops Greene, H.G. Johnson, S.Y. Manson, M.W. Hartwell, S.R. Endris, C.A. Bruns, T.R. 2014 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshoreSanFrancisco/data/Faults_OffshoreSanFrancisco.zip https://pubs.usgs.gov/ds/781/OffshoreSanFrancisco/data_catalog_OffshoreSanFrancisco.html shapefile 2006 2010 ground condition SanFranFaults faults were used to interpret subsurface geologic structure Greene, H.G. Hartwell, S.R. Manson, M.W. Johnson, S.Y. Dieter, B.E. Phillips, E.L. Watt, J.T. 2014 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshorePacifica/data/Geology_OffshorePacifica.zip https://pubs.usgs.gov/ds/781/OffshorePacifica/data_catalog_OffshorePacifica.html shapefile 2006 2010 ground condition PacificaGeology used to determine bedrock outcrops Greene, H.G. Hartwell, S.R. Manson, M.W. Johnson, S.Y. Dieter, B.E. Phillips, E.L. Watt, J.T. 2014 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshorePacifica/data/Faults_OffshorePacifica.zip https://pubs.usgs.gov/ds/781/OffshorePacifica/data_catalog_OffshorePacifica.html shapefile 2006 2010 ground condition PacificaFaults faults were used to interpret subsurface geologic structure Greene, H.G. Manson, M.W. Dieter, B.E. Ross, S.L. Hartwell, S.R. Johnson, S.Y. Watt, J.T. 2014 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshoreHalfMoonBay/data/Geology_OffshoreHalfMoonBay.zip https://pubs.usgs.gov/ds/781/OffshoreHalfMoonBay/data_catalog_OffshoreHalfMoonBay.html shapefile 2006 2010 ground condition HalfMoonBayGeology used to determine bedrock outcrops Greene, H.G. Manson, M.W. Dieter, B.E. Ross, S.L. Hartwell, S.R. Johnson, S.Y. Watt, J.T. 2014 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshoreHalfMoonBay/data/Faults_OffshoreHalfMoonBay.zip https://pubs.usgs.gov/ds/781/OffshoreHalfMoonBay/data_catalog_OffshoreHalfMoonBay.html shapefile 2006 2010 ground condition HalfMoonBayFaults faults were used to interpret subsurface geologic structure Watt, J.T. Greene, H.G. Hartwell, S.R. Endris, C.A. Ross, S.L. Phillips, E.L. Dieter, B.E. 2013 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshoreSanGregorio/data/Geology_OffshoreSanGregorio.zip https://pubs.usgs.gov/ds/781/OffshoreSanGregorio/data_catalog_OffshoreSanGregorio.html shapefile 2006 2010 ground condition SanGregorioGeology used to determine bedrock outcrops Greene, H.G. Manson, M.W. Dieter, B.E. Ross, S.L. Hartwell, S.R. Johnson, S.Y. Watt, J.T. 2013 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/ds/781/OffshoreSanGregorio/data/Faults_OffshoreSanGregorio.zip https://pubs.usgs.gov/ds/781/OffshoreSanGregorio/data_catalog_OffshoreSanGregorio.html shapefile 2006 2010 ground condition SanGregorioFaults faults were used to interpret subsurface geologic structure Water bottom (seabed) and depth to base of the Last Glacial Maximum (LGM) horizons were digitized from seismic-reflection data using Seisworks software. The difference between the two horizons was exported from Seisworks for every shot point as XY coordinates (UTM Zone 10) and two-way travel time (TWT). The thickness was determined by applying a sound velocity to the TWT of 1,500 m/sec in water and 1,600 m/sec velocity in sediment, resulting in sediment thickness values. S-8-09-NC, L-1-06-NC, S-16-10-NC, F-2-07-NC, S-15-10-NC 2011 XY locations and sediment thickness values Z were imported to ArcGIS format as points and interpolated to a preliminary surface with TopoRaster from which isopachs (thickness contours) were extracted at 2.5 m intervals. Further refinement of the sediment thickness map (see https://pubs.usgs.gov/ds/781/BolinasToPescadero/data/SedimentThickness_BolinasToPescadero.zip) and the isopach shapefile was accomplished through several iterations of manual editing to incorporate geology and fault information following the methodology of Wong (2012; see http://pubs.usgs.gov/of/2012/1161/). S-8-09-NC, L-1-06-NC, S-16-10-NC, F-2-07-NC, S-15-10-NC, BolinasFaults, SanFranFaults, PacificaFaults, HalfMoonBayFaults, SanGregorioFaults, BolinasGeology, SanFranGeology, PacificaGeology, HalfMoonBayGeology, SanGregorioGeology 2012 Modified Distribution_Information section in metadata to facilitate data download. 20171005 U.S. Geological Survey Alan O. Allwardt Contractor -- Information Specialist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060 831-460-7551 831-427-4748 aallwardt@usgs.gov Metadata was modified to bring up to current USGS PCMSC standards. USGS Thesaurus and keywords were added, and Process Steps were refined. Minor typos were corrected. No data information was changed. 20180507 Susan A Cochran U.S. Geological Survey, Pacific Coastal and Marine Science Center Geologist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060-5792 USA (831) 460-7545 scochran@usgs.gov Minor typos were corrected. No data information was changed. 20180912 Susan A Cochran U.S. Geological Survey, Pacific Coastal and Marine Science Center Geologist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060-5792 USA (831) 460-7545 scochran@usgs.gov Performed minor edits to the metadata to correct typos. No data were changed 20211018 U.S. Geological Survey Susan A. Cochran Geologist Mailing and Physical

2885 Mission Street

Santa Cruz CA 95060 831-460-7545 scochran@usgs.gov Vector String 483 Universal Transverse Mercator 10 0.999600 -117.000000 0.000000 500000.000000 0.000000 row and column 50.000000 50.000000 meters D_WGS_1984 WGS_1984 6378137.000000 298.257224 isopachs lines of equal thickness standard sedimentology FID Internal feature number ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. Esri Coordinates defining the features ID sequential feature number Esri sequential feature numbers CONTOUR line of equal thickness U.S. Geological Survey thickness measure Type Type of contour U.S. Geological Survey Index Contour at 10m interval This report Intermediate Contours at 2.5m interval U.S. Geological Survey U.S. Geological Survey mailing and physical address

345 Middlefield Rd

Menlo Park CA 94025-3561 USA (650) 329-4309 The .zip file (Isopachs_BolinasToPescadero.zip) includes the .aux, .dbf, .shp, .shx, .sbx, and .sbn files, as well as FGDC-compliant metadata for the Isopach data layer of Bolinas to Pescadero, California. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. shapefile ArcMap (version 10.0, ESRI, 2011) Point, line, and polygon features are in shapefile format and are projected in UTM Zone 10 coordinates. The .zip file for a shapefile includes the .aux, .dbf, .shp, .shx, .sbx, and .sbn files, as well as FGDC-compliant metadata for the Isopach data layer of Bolinas to Pescadero, California. WinZip 0.6 https://pubs.usgs.gov/ds/781/BolinasToPescadero/data/Isopachs_BolinasToPescadero.zip https://pubs.usgs.gov/ds/781/BolinasToPescadero/data_catalog_BolinasToPescadero.html https://pubs.usgs.gov/ds/781/ The first link will begin a direct download of the data. The second link is a landing page on which all of the downloadable data for a particular region are listed. The third link is a landing page for the entire data catalog. none 20211018 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060-5792 US 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time