Samuel Y. Johnson Stephen R. Hartwell Janet T. Watt Jeffrey W. Beeson Peter Dartnell Susan A. Cochran 2019 GeoTIFF Data Series DS 781 Reston, VA U.S. Geological Survey https://doi.org/10.5066/P97CZ0T7 https://www.sciencebase.gov/catalog/item/5c913811e4b09388245480d2 Nadine E. Golden 2013 database Data Series DS 781 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/ds/781/ https://cmgds.marine.usgs.gov/data/csmp/PointSurToPointArguello/data_catalog_PointSurToPointArguello.html This part of DS 781 presents data for the sediment-thickness map of the Point Sur to Point Arguello, California, region. The raster data file is included in the “SedimentThickness_PointSurToPointArguello.zip,” which is accessible from https://doi.org/10.5066/P97CZ0T7. As part of the USGS's California State Waters Mapping Project, a 50-m grid of sediment thickness for the seafloor within the 3-nautical mile limit between Point Sur and Point Arguello was generated from seismic-reflection data collected between 2008 and 2014, and supplemented with geologic structure (fault and fold) 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/). To expand geologic mapping to the seafloor within the California's State Waters, to update coastal geologic mapping, and to contribute to a uniform regional geologic database, which can be used geographic information systems. Additionally, to aid in assessments and mitigation of geologic hazards in the Point Sur to Point Arguello coastal region and to provide sufficient geologic information for land-use and land-management decisions both onshore and offshore. This information is not intended for navigational purposes. Additional information about the field activities from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=B0511CC https://cmgds.marine.usgs.gov/fan_info.php?fan=S609SC https://cmgds.marine.usgs.gov/fan_info.php?fan=S608SC https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-632-FA 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. 20080609 20140802 ground condition at time seismic data were collected Complete None planned -121.962299 -120.132879 36.333717 34.382281 USGS Metadata Identifier USGS:5c913811e4b09388245480d2 ISO 19115 Topic Category environment geoscientificInformation oceans Data Categories for Marine Planning Physical Habitats and Geomorphology Distributions 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 U.S. Geological Survey USGS Coastal and Marine Hazards and Resources Program CMHRP Pacific Coastal and Marine Science Center PCMSC Geographic Names Information System (GNIS) Pacific Ocean State of California Point Sur Lafler Rock Gamboa Point Gorda Ragged Point Piedras Blancas Cambria Point Estero Morro Bay Point Buchon Avila Beach oceano Beach Point Sal Point Purisma Point Arguello 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 of the dataset and in products derived from these data. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95060-5792 US 831-427-4747 pcmsc_data@usgs.gov https://www.sciencebase.gov/catalog/file/get/5c913920e4b09388245480e3?name=SedimentThickness_PointSurToPointArguello.jpg&allowOpen=true Sediment thickness for the region between Point Sur and Point Arguello JPEG Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; Esri ArcCatalog 10.0 Originator: Samuel Y. Johnson Stephen R. Hartwell Janet T. Watt Jeffrey W. Beeson P Dartnell 2019 Open-File Report 2018-1158 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ofr20181158 The data points from seismic-reflection profiles are dense along tracklines (about 1–2 m apart) and sparse between tracklines (typically 800–1,000 m apart). 50-m cell size for interpolation is better supported along track than between. No formal logical accuracy tests were conducted. All vector geometry and attributes are present. Sediment thickness data points exported from Seisworks profiling software were processed within the California 3-nmi limit. The sparker position may vary as much as 20 m from the navigation reference on the vessel. Estimated to be approximately 1 m, along the track lines where data is well constrained, but may be much greater in areas where interpolation occurred. Johnson, S.Y. Hartwell, S.R. Sliter, R.W. Beeson, J.W. 2017 SEG-Y USGS National Archive of Marine Seismic Surveys database U.S. Geological Survey https://walrus.wr.usgs.gov/namss/survey/b-05-11-cc/ SEG-Y 2011 ground condition 2011 seismic digital seismic data from Point Sur to Estero Bay used to interpret subsurface geologic structure Sliter, R.W. Triezenberg, P.J. Hart, P.E. Watt, J.T. Johnson, S.Y. Scheirer, D.S. 2009 SEG-Y U.S. Geological Survey Open-File Report OFR 2009-1100 online U.S. Geological Survey https://pubs.usgs.gov/of/2009/1100/ SEG-Y 2009 ground condition 2009 seismic digital seismic data from Point Piedras Blancas to Point Sal used to interpret subsurface geologic structure Sliter, R.W. Triezenberg, P.J. Hart, P.E. Watt, J.T. Johnson, S.Y. Scheirer, D.S. 2009 SEG-Y U.S. Geological Survey Open-File Report OFR 2009-1100 online U.S. Geological Survey https://pubs.usgs.gov/of/2009/1100/ SEG-Y 2008 ground condition 2008 seismic digital seismic data from Point Estero to San Luis Obispo Bay used to interpret subsurface geologic structure Johnson, S.Y. Hartwell, S.R. Beeson, J.W. 2016 SEG-Y U.S. Geological Survey data release doi:10.5066/F7SX6BCD online U.S. Geological Survey https://doi.org/10.5066/F7SX6BCD SEG-Y 2014 ground condition 2014 seismic digital seismic data from Point Sal to Gaviota used to interpret subsurface geologic structure Samuel Y. Johnson Stephen R. Hartwell Janet T. Watt Jeffrey W. Beeson Peter Dartnell 2019 shapefile U.S. Geological Survey data release doi: 10.5066/P97CZ0T7 online U.S. Geological Survey https://doi.org/10.5066/P97CZ0T7 shapefile 2019 publication date faults faults from Point Sur to Point Arguello were used to interpret subsurface geologic structure Samuel Y. Johnson Stephen R. Hartwell Janet T. Watt Jeffrey W. Beeson Peter Dartnell 2019 shapefile U.S. Geological Survey data release doi: 10.5066/P97CZ0T7 online U.S. Geological Survey https://doi.org/10.5066/P97CZ0T7 shapefile 2019 publication date folds folds from Point Sur to Point Arguello 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. all sources listed above were used in the creation of this layer 2017 SedimentThicknessPoints 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 this sediment thickness map and the isopach shapefile (see https://pubs.usgs.gov/ds/781/PointSurToPointArguello/data/Isopachs_PointSurToPointArguello.zip) 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/). SedimentThicknessPoints 2017 SedimentThickness Edits were made as needed to correct data download links. No data were changed. Users are advised to compare the metadata date of this file to any similar file to ensure they are using the most recent version. 2020715 Susan A Cochran U.S. Geological Survey, Pacific Coastal and Marine Science Center mailing and physical

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Santa Cruz CA 95060 United States 831-460-7545 scochran@usgs.gov Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. 20201019 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Raster Pixel 5304 4073 Universal Transverse Mercator 10 0.9996 -123.00000 0.00000 500000.0 0.00 row and column 50.0 50.0 Meters WGS84 WGS84 6378137.00 298.257223563 Value Sediment thickness in meters Esri VALUE Thickness in meters of the sediment above transgressive surface Esri 0.00 47.12 meters 0.01 Grid value is thickness of sediment above the transgressive surface of the last glacial maximum, in meters. none U.S. Geological Survey - ScienceBase mailing and physical

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Denver CO 80225 1-888-275-8747 sciencebase@usgs.gov The downloadable data include a geoTiff and associated files as well as FGDC-compliant metadata for the Sediment Thickness data layer in the Point Sur to Point Arguello region of 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. geoTIFF ArcMap (version 10.0, Esri, 2011) Raster data layer is registered TIFF image in the UTM Zone 10 coordinate system he downloadable data include a geoTiff and associated files as well as FGDC-compliant metadata for the Sediment Thickness data layer in the Point Sur to Point Arguello region of California. Winzip 85 https://www.sciencebase.gov/catalog/file/get/5c913811e4b09388245480d2 https://doi.org/10.5066/P97CZ0T7 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. The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ArcMap TIFF. Users should download the ArcGIS Project File (https://www.sciencebase.gov/catalog/item/5c91390fe4b09388245480e1?name=PointSurToPointArguelloGIS.mxd.zip), a compressed (with the "zip" command) version of the ArcMap document (.mxd) that has all the data layers loaded in the table of contents for "Point Sur to Point Arguello" and has all the data symbolized as on the map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this GIS. 20201019 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

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