Metadata: Identification_Information: Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: Bethany Kharrazi Originator: Bruce E. Jaffe Publication_Date: 20250723 Title: Analysis for estimated percent sand in cores taken from San Francisco Bay, California, 1990-2016 Geospatial_Data_Presentation_Form: comma-delimited text Series_Information: Series_Name: data release Issue_Identification: DOI: 10.5066/P9Y7W1ZM Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9Y7W1ZM Larger_Work_Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: Amy C. Foxgrover Originator: Bethany Kharrazi Originator: Bruce E. Jaffe Publication_Date: 2025 Title: Estimates of percent sand in cores collected in San Francisco Bay,California. Series_Information: Series_Name: Data Release Issue_Identification: DOI:10.5066/P9Y7W1ZM Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Fregoso, T.A., Foxgrover, A.C., Kharrazi, B., and Jaffe, B.E., 2025, Estimates of percent sand in cores collected in San Francisco Bay, California: U.S. Geological Survey data release, https://doi.org/10.5066/P9Y7W1ZM. Online_Linkage: https://doi.org/10.5066/P9Y7W1ZM Description: Abstract: Sediment analysis of cores collected in San Francisco Bay, San Pablo Bay, and the Carquinez Strait and Suisun Bay, California from 1990 to 2016 for percent sand. Handwritten core logs, x-radiographs, and the cores themselves, were examined for the presence of sand. Purpose: Estimating the amount of sand made available to the estuary through erosion of the San Francisco Bay floor and sand sequestered within the system through deposition from the 1980s to 2010s for use in constructing a sand sediment budget. We utilized the bathymetric change analysis of Fregoso and others (2023) that documents sediment volume change from a 1980s bathymetric surface to a 2010s bathymetric surface, in combination with information on the sand content of the bed sediment derived from sediment cores and surface samples from six different sediment studies, to estimate the net change in sand volume in the bed of San Francisco Bay. Supplemental_Information: Additional information about the field activity or activities from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=J190SF https://cmgds.marine.usgs.gov/fan_info.php?fan=J191SF https://cmgds.marine.usgs.gov/fan_info.php?fan=J200SF https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-671-FA The data presented here was originally in an excel spreadsheet with one tab per core. To make this data accessible to all, the analysis for each core has been combined into one flat file with headings for each type of data presented and records for the data listed by core. It is recommended that in working with the data, the record information be separated by core and by source. 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 dataset in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19900123 Ending_Date: 20161021 Currentness_Reference: ground condition at time data were collected Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.507046 East_Bounding_Coordinate: -121.863877 North_Bounding_Coordinate: 38.133552 South_Bounding_Coordinate: 37.448070 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:99df34cd-4f03-49b1-8588-5a694fa6f15d Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: inlandWaters Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Mining and Mineral Extraction Theme_Keyword: Bathymetry and Elevation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: ocean processes Theme_Keyword: sedimentation Theme_Keyword: ocean sciences Theme_Keyword: mining and quarrying Theme_Keyword: bathymetry Theme_Keyword: dredging Theme_Keyword: drilling and coring Theme_Keyword: box coring Theme_Keyword: gravity coring Theme_Keyword: sediment transport Theme_Keyword: estuarine processes Theme_Keyword: stratigraphic thickness Theme_Keyword: suspended material (water) Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: sand deposit Theme_Keyword: sediment Theme_Keyword: coastal sediment budget Theme_Keyword: dredge spoils disposal Theme_Keyword: box coring Theme_Keyword: surface sampling Theme_Keyword: grab sampling Theme_Keyword: sediment analysis Theme_Keyword: sediment deposition Theme_Keyword: sediment erosion Theme_Keyword: sediment resources Theme_Keyword: sediment sinks Theme_Keyword: sediment sources Theme_Keyword: analytical modeling Theme_Keyword: conceptual modeling Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: San Francisco Bay Place_Keyword: San Pablo Bay Place_Keyword: Suisun Bay Place_Keyword: Carquinez Strait Place_Keyword: Golden Gate Place_Keyword: Pacific Ocean Place_Keyword: Alcatraz Isaland Access_Constraints: No access constraints Use_Constraints: 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 Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: SFBayCoreLocations.png Browse_Graphic_File_Description: Map depicting the location and source of cores included in this study Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Microsoft Windows 10 Version 10.0 (Build 19045); Microsoft Excel 2302 Build 16130.20766 ; Esri ArcGIS 13.1.3.41833 Cross_Reference: Citation_Information: Originator: Theresa A. Fregoso Originator: Bruce E. Jaffe Originator: Amy C. Foxgrover Originator: Donald Woodrow Originator: Bethany Kharrazi Originator: Kevin Orzech Publication_Date: 2025 Title: Contributions of erosion, deposition, and human activities to a change in sand storage in the bed of San Francisco Bay, California Other_Citation_Details: Fregoso, T.A., Jaffe, B.E., Foxgrover, A.C., Woodrow, D.L., Kharrazi, B., and Orzech, K., 2025, Contributions of erosion, deposition, and human activities to a change in sand storage in the bed of San Francisco Bay, California, 1980s to 2010s: U.S. Geological Survey Open-File Report 2025–1022, 30 p., https://doi.org/10.3133/ofr20251022. Online_Linkage: http://doi.org/10.3133/ofr20251022 Cross_Reference: Citation_Information: Originator: Theresa A. Fregoso Originator: Bruce E. Jaffe Originator: Amy C. Foxgrover Publication_Date: 2023 Title: Bathymetric change analyses in San Francisco Bay, California, from 1971 to 2020 Other_Citation_Details: Fregoso, T.A., Jaffe, B.E., and Foxgrover, A.C., 2023, Bathymetric change analysis in San Francisco Bay, California, from 1971 to 2020: U.S. Geological Survey data release, https://doi.org/10.5066/P9Y5PEV0 Online_Linkage: https://doi.org/10.5066/P9Y5PEV0 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: While every effort was made to be precise in measurements; quality, preservation, and measurements of individual cores, determined recorded sediment intervals in core logs. Estimating the percent sand in cores from handwritten core logs is, fundamentally, subjective. Users are advised to read the companion open-file report accompanying this data release for additional information. Logical_Consistency_Report: Attributes mean the same thing throughout the data set. Completeness_Report: There are additional sediment cores that have core logs that were not included in this data release for several possible reasons, the cores was outside of this project study area, they have been released as part of another study, or the original core could not be located/determined. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Data are as accurate as source data used. Users are advised to read the metadata record for the sources for horizontal accuracy details. No further accuracy tests were conducted. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Data are as accurate as source data used. Users are advised to read the metadata record for the sources for horizontal accuracy details. No further accuracy tests were conducted. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: R.J. Anima Originator: H. E. Clifton Originator: Carol Reiss Originator: Florence L. Wong Publication_Date: 2005 Title: Locations and descriptions of gravity, box, and push cores collected in San Francisco Bay between January and February, 1990 and 1991 Geospatial_Data_Presentation_Form: Report Table Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/of/2005/1453/of2005-1453.pdf Type_of_Source_Media: online report Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1990 Ending_Date: 1991 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: A/C cores Source_Contribution: Core data for analysis of sand Source_Information: Source_Citation: Citation_Information: Originator: Donald L. Woodrow Originator: John L. Chin Originator: Florence L. Wong Originator: Theresa A. Fregoso Originator: Bruce E. Jaffe Publication_Date: 2017 Title: Description of gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California Geospatial_Data_Presentation_Form: Report Table Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20171078 Type_of_Source_Media: online report Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1990 Ending_Date: 2000 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: A/C and Jaffe logs 1 Source_Contribution: Core logs for analysis of sand Source_Information: Source_Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: Donald L. Woodrow Originator: Kevin Orzech Publication_Date: 2024 Title: Gravity and Box cores San Francisco Bay, California Geospatial_Data_Presentation_Form: Report Table Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9G7VZZQ Type_of_Source_Media: online report Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1990 Ending_Date: 2000 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: A/C and Jaffe logs 2 Source_Contribution: Core logs for analysis of sand Source_Information: Source_Citation: Citation_Information: Originator: Dan Allison Originator: Margaret Hampton Originator: Bruce E. Jaffe Publication_Date: 2003 Title: Preliminary Analysis of Cores from North San Francisco Bay, California Geospatial_Data_Presentation_Form: online table Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/of/2003/0111/intro.html Type_of_Source_Media: online report Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Jaffe cores Source_Contribution: Core data for analysis of sand Source_Information: Source_Citation: Citation_Information: Originator: Rene K. Takesue Originator: Mary L. McGann Originator: Thomas D. Lorenson Originator: Janet T. Watt Publication_Date: 2021 Title: Geophysical properties, geochronologic, and geochemical data of sediment cores collected from San Pablo Bay, California Geospatial_Data_Presentation_Form: csv Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9BDEB3K Type_of_Source_Media: online resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2016 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Watt cores Source_Contribution: Core data for analysis of sand Source_Information: Source_Citation: Citation_Information: Originator: Donald Yee Originator: Bryan Bemis Originator: Douglas Hammond Originator: Wes Heim Originator: Bruce E. Jaffe Originator: Anthony Rattonetti Originator: Saskia. van Bergen Publication_Date: 2011 Title: Age Estimates and Pollutant Concentrations of Sediment Cores from San Francisco Bay and Wetlands. Geospatial_Data_Presentation_Form: online table Publication_Information: Publication_Place: online Publisher: San Francisco Estuary Institute Online_Linkage: https://www.sfei.org/sites/default/files/biblio_files/652-Coring-2006-Yee-report-Final-web.pdf Type_of_Source_Media: online resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Yee cores Source_Contribution: Core data for analysis of sand Process_Step: Process_Description: Cores taken in San Francisco Bay were divided into the following bays: South Bay, Central Bay, San Pablo Bay and Suisun Bay. Each core was logged in one or several of the following ways prior to this effort: paper logs based on observations of the working/archived core, graphic illustrated logs included in various reports, and grain size tables included in reports and open file reports. The intervals chosen and qualitative findings of sand reported are drawn directly from the paper logs, as they have the most detail in describing units and illustrating sand presence. The paper logs were obtained electronically (some were included in open file reports) or physically in labeled binders at USGS Menlo Park. The other logging methods were used as secondary confirmations of the paper log content. For just a few cores, the secondary logs did not line up with the paper log. These cores were visited in person to confirm the mismatch. Where sand was described in the written portion of the paper logs and/or drawn in the visual depiction of the core, percent sand was estimated. The illustration of the core helped contextualize the distribution and thickness of sand in the units. Several paper logs included a written percent sand estimate, which was then reported in the spreadsheet for this effort. Where there was not a percent sand estimate, various methods were used to estimate sand presence in the units. If a unit contained sand laminae, then they were counted and estimated for thickness from the visual depiction of the core and associated descriptions to determine the amount of sand in the unit. If a unit contained sand interbeds or lenticular bedding, a similar process was used depending on the thickness of each bed. Where there were sand-filled burrows, an estimation was made based on the frequency and distribution of the burrows and their apparent thickness drawn on the paper log. If a unit was described at “Muddy Sand”, “Sandy Mud”, or any other description in which sand was either a matrix or a secondary grain size in any unit and not clearly distinguished visually on the paper log (i.e., sand was noted in the description but not visually marked in any identifiable way on the drawn core), a best estimation was made based on the description. Percent sand for intervals was calculated by dividing the total amount of sand in centimeters from the length of the unit in centimeters and multiplying by 100. Percent sand was estimated for the entire core when at least one unit contained sand. This was calculated by adding up the amount of sand in every unit and then dividing the sum by the length of the core. If a core had any gaps, these were subtracted from the overall length of the core. Source_Used_Citation_Abbreviation: A/C cores Source_Used_Citation_Abbreviation: A/C and Jaffe logs 1 Source_Used_Citation_Abbreviation: A/C and Jaffe logs 2 Source_Used_Citation_Abbreviation: Jaffe cores Source_Used_Citation_Abbreviation: Watt cores Source_Used_Citation_Abbreviation: Yee cores Process_Date: 20210626 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 186 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00001 Longitude_Resolution: 0.00001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: World Geodetic System 1984 (WGS84) Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Attribute Table Entity_Type_Definition: Table containing attribute information associated with the dataset Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Core Attribute_Definition: The core ID Attribute_Definition_Source: producer defined Attribute_Domain_Values: Unrepresentable_Domain: For A/C cores, the core IDs begin with of the last two numbers of the year collected, followed by a dash and sequential numbers assigned on day of collection. For Jaffe cores, cores begin with BC for box cores, or GC or GCC for gravity cores, followed by a dash and sequential numbers assigned on day of collection. Watt cores begin with SPB followed by sequential numbers assigned on day of collection. Yee cores begin with initials representing subembayment (SB – south bay, LSB – lower south bay, SU – Suisun, CB – Central Bay, SPB – San Pablo Bay), followed either by sequential numbers assigned on day of collection or more descriptive place name. Attribute: Attribute_Label: Source Attribute_Definition: The sources of the information for the rest of the attribute values Attribute_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: paper log Enumerated_Domain_Value_Definition: data taken from a handwritten core log Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: note Enumerated_Domain_Value_Definition: Specific detail about record Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: core length, Enumerated_Domain_Value_Definition: recorded length of core Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: graphic log Enumerated_Domain_Value_Definition: digital representation of a core log Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: Date_logged Attribute_Definition: Date core was logged, day/month/year, or year only. -9999 used when date not known. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2/10/2003 Range_Domain_Maximum: 11/4/2020 Attribute_Units_of_Measure: Date in month/day/year format or year Attribute: Attribute_Label: Interval_top_cm Attribute_Definition: the location of the top of current interval in the specified core. -9999 represents data records where core interval does not apply. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 368 Attribute_Units_of_Measure: cm Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Interval_bottom_cm Attribute_Definition: the location of the bottom of current interval in the specified core. -9999 represents data records where core interval does not apply. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 372 Attribute_Units_of_Measure: cm Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Interval_length Attribute_Definition: Length of interval in the specified core. -9999 represents data records where core length does not apply. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 372 Attribute_Units_of_Measure: cm Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Sand_pct Attribute_Definition: the measured percent of sand by volume as a decimal for the interval record, -9999 indicates that this value does not apply to record column. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 1 Attribute_Units_of_Measure: decimal percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Min_pct Attribute_Definition: the minimum percent by volume as a decimal of sand for the interval record, -9999 indicates that this value does not apply to record column. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0000 Range_Domain_Maximum: 1.0000 Attribute_Units_of_Measure: decimal percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Max_pct Attribute_Definition: the maximum percent by volume as a decimal of sand for the interval record, -9999 indicates that this value does not apply to record column. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0000 Range_Domain_Maximum: 1.0000 Attribute_Units_of_Measure: decimal percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Notes Attribute_Definition: Notes on sediment type for the specific interval. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Unrepresentable_Domain: Notes on sediment type for the specific interval, na represents no applicable data. Attribute: Attribute_Label: Comments Attribute_Definition: Any relevant notes to interval Attribute_Definition_Source: producer defined Attribute_Domain_Values: Unrepresentable_Domain: Any relevant notes, na represents no applicable data Attribute: Attribute_Label: cm_sand Attribute_Definition: The thickness of the sand layer in the interval. This value divided by the length of the interval in which it appears, is the calculated percent sand for the interval. -9999 was used for records where data were not relevant. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 64 Attribute_Units_of_Measure: cm Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: XWGS84 Attribute_Definition: longitude, No data values -9999 Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -122.47317 Range_Domain_Maximum: -122.030 90 Attribute_Units_of_Measure: degree Attribute: Attribute_Label: YWGS84 Attribute_Definition: latitude, No data values -9999 Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 37.45950 Range_Domain_Maximum: 38.10355 Attribute_Units_of_Measure: degree Attribute: Attribute_Label: XUTM83 Attribute_Definition: X UTM NAD83 zone 10 north. No data values -9999 Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 546303.6232 Range_Domain_Maximum: 585012.344 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: YUTM83 Attribute_Definition: y UTM NAD83 zone 10 north. No data values -9999 Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4146268.693 Range_Domain_Maximum: 4217483.725 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Bay Attribute_Definition: Subembayment where core is located Attribute_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Suisun Enumerated_Domain_Value_Definition: Subembayment Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: San Pablo Enumerated_Domain_Value_Definition: Subembayment Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Central Enumerated_Domain_Value_Definition: Subembayment Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: South Enumerated_Domain_Value_Definition: Subembayment Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Lower South Enumerated_Domain_Value_Definition: Subembayment Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: no applicable data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: Year Attribute_Definition: Year of core collection Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1990 Range_Domain_Maximum: 2016 Attribute_Units_of_Measure: year Attribute: Attribute_Label: Equipment Attribute_Definition: Coring method Attribute_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Box Enumerated_Domain_Value_Definition: Coring method Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Gravity Enumerated_Domain_Value_Definition: Coring method Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Vibracore Enumerated_Domain_Value_Definition: Coring method Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: no applicable data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute: Attribute_Label: Survey Attribute_Definition: survey reference Attribute_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Anima/Clifton Enumerated_Domain_Value_Definition: 1990 and 1991 Anima and Clifton survey cruises Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jaffe Enumerated_Domain_Value_Definition: 2000 Jaffe survey cruise Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Watt Enumerated_Domain_Value_Definition: 2016 Watt survey cruise Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yee Enumerated_Domain_Value_Definition: 2006 Yee survey cruise Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: no applicable data Enumerated_Domain_Value_Definition_Source: Producer defined Overview_Description: Entity_and_Attribute_Overview: The first line of the csv file is a header line. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - CMGDS Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Resource_Description: These data are available in csv format accompanied by CSDGM FGDC-compliant metadata. Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: comma-delimited text Format_Version_Number: Microsoft Excel 2302 Build 16130.20766 Format_Information_Content: cvs table File_Decompression_Technique: No compression applied Transfer_Size: 0.299 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P9Y7W1ZM Access_Instructions: Data and metadata can be downloaded using the Network_Resource_Name link and scrolling down to the Data section. Fees: None. Technical_Prerequisites: These data can be viewed with any spreadsheet or word processing software capable of opening CSV files. Metadata_Reference_Information: Metadata_Date: 20250723 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998