Identification_Information:
  Citation:
    Citation_Information:
      Originator: Norman M. Maher
      Originator: Herman A. Karl
      Originator: John L. Chin
      Originator: William C. Schwab
      Publication_Date: 1991
      Title: Station locations and grain-size analysis of surficial sediment samples collected on the continental shelf, Gulf of the Farallones, during cruise F2-89-NC, January 1989
      Geospatial_Data_Presentation_Form: Paper
      Series_Information:
        Series_Name: Open-file report
        Issue_Identification: 91-375A
      Publication_Information:
        Publication_Place: Menlo Park, CA
        Publisher: U.S. Geological Survey
      Other_Citation_Details: Data from USGS cruise F289NC (http://walrus.wr.usgs.gov/infobank/f/f289nc/html/f-2-89-nc.meta.html).
      Online_Linkage: http://pubs.er.usgs.gov/pubs/ofr/ofr91375A
  Description:
    Abstract: No formal abstract is given.
    Purpose: This investigation, the first of several planned adjacent to major population centers, was designed to establish a good scientific data base on a segment of continental shelf adjacent to the San Francisco Bay area so as to evaluate and monitor human impact on the marine environment. "
    Supplemental_Information: Data digitized in 2003-2005 for inclusion into usSEABED (http://walrus.wr.usgs.gov/usseabed)
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 19890122
        Ending_Date: 19890128
    Currentness_Reference: Publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -123.38916
      East_Bounding_Coordinate: -122.54769
      North_Bounding_Coordinate: 38.06244
      South_Bounding_Coordinate: 37.42068
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: Oceans and Estuaries
      Theme_Keyword: Location
      Theme_Keyword: GeoscientificInformation
    Theme:
      Theme_Keyword_Thesaurus: NASA/Global Change Master Directory (GCMD) Earth Science Keyword. Version 5.3.3
      Theme_Keyword: Marine Sediments
      Theme_Keyword: Sedimentary Structures
      Theme_Keyword: Sedimentary Textures
      Theme_Keyword: Terrigenous Sediments
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: U.S. Geological Survey
      Theme_Keyword: Branch of Pacific Marine Geology
      Theme_Keyword: Coastal and Marine Geology Program
      Theme_Keyword: Soutar Van Veen grab sampler
    Place:
      Place_Keyword_Thesaurus: Geographic Names Information System
      Place_Keyword: Gulf of the Farallones
      Place_Keyword: Farallon Islands
      Place_Keyword: California
  Access_Constraints: None.  Paper copy of report is available through the USGS, and is also available online.
  Use_Constraints: Cite the U.S. Geological Survey as the originators of the data.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: John L. Chin
      Contact_Address:
        Address_Type: Mail
        Address: USGS Coastal and Marine Geology
        Address: 345 Middlefield Road, MS 999
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025
      Contact_Voice_Telephone: 650-329-5270
      Contact_Electronic_Mail_Address: jchin@usgs.gov
  Browse_Graphic:
    Browse_Graphic_File_Name: OFR_91_375A
    Browse_Graphic_File_Description: Screen grab of GIS-produced sample distribution, with bathymetry and land for reference.
    Browse_Graphic_File_Type: JPG
  Data_Set_Credit: The authors and others at the USGS for collection and analysis of data.  For usSEABED, digitization and formatting: K. Halimeda Kilbourne and Jane Reid (USGS); Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado)
  Native_Data_Set_Environment: Tkme: Another editor for formal metadata by Peter N. Schweitzer (U.S. Geological Survey, Reston, VA 22092), version 2.9.13, Microsoft Windows Version 5.1; Microsoft Word 2000 9.0
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Detailed information is available in the report.  For usSEABED, data were digitized, visually compared to the source and corrected.  Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS.
  Logical_Consistency_Report: Data fall within normal ranges for the given parameters.
  Completeness_Report: No estimate made for original data.  For inclusion into usSEABED, all textural data in the report were included.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Navigation by three systems: GPS, LORAN-C, and a shore-based transponder net.  Positional accuracy varied from about 100 m using GPS and LORAN-C to a few meters using the shore-based transponder net.
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report: Water depth determination probably by 3.5 kHz profiling systems.  Subsample depths given as nearest centimeter.
  Lineage:
    Process_Step:
      Process_Description: Please see the report for a detailed description of the sediment processing.
      Process_Date: 1991
      Source_Produced_Citation_Abbreviation: OFR_91_375A
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey
            Contact_Person: Michael Torresan
          Contact_Address:
            Address_Type: Mail
            Address: USGS Coastal and Marine Geology
            Address: 345 Middlefield Road, MS 999
            City: Menlo Park
            State_or_Province: CA
            Postal_Code: 94025
          Contact_Voice_Telephone: 650-329-5493
          Contact_Electronic_Mail_Address: mtorresan@usgs.gov
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
      Point_and_Vector_Object_Count: 266
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.00001
      Longitude_Resolution: 0.00001
      Geographic_Coordinate_Units: Decimal degrees
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: Point
      Entity_Type_Definition: SDTS point
      Entity_Type_Definition_Source: Source report
    Attribute:
      Attribute_Label: Sample number
      Attribute_Definition: Sample number
      Attribute_Definition_Source: US Geological Survey
      Attribute_Domain_Values:
        Unrepresentable_Domain: Alpha numeric number based on cruise and core information
    Attribute:
      Attribute_Label: Water depth
      Attribute_Definition: Depth of water at sample site
      Attribute_Definition_Source: Source report
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 22
          Range_Domain_Maximum: 119
          Attribute_Units_of_Measure: Meters
          Attribute_Measurement_Resolution: 1.0
    Attribute:
      Attribute_Label: Gravel
      Attribute_Definition: Gravel
      Attribute_Definition_Source: Wentworth, 1932
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 81.27
          Attribute_Units_of_Measure: Percent
          Attribute_Measurement_Resolution: 0.1
    Attribute:
      Attribute_Label: Sand
      Attribute_Definition: Sand
      Attribute_Definition_Source: Wentworth 1932
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 99.86
          Attribute_Units_of_Measure: Percent
          Attribute_Measurement_Resolution: 0.1
    Attribute:
      Attribute_Label: Silt
      Attribute_Definition: Silt
      Attribute_Definition_Source: Wentworth 1932
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.5
          Range_Domain_Maximum: 87.78
          Attribute_Units_of_Measure: Percent
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Clay
      Attribute_Definition: Clay
      Attribute_Definition_Source: Wentworth 1932
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 5.16
          Attribute_Units_of_Measure: Percent
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Mud
      Attribute_Definition: Mud
      Attribute_Definition_Source: Wentworth 1932
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 92.54
          Attribute_Units_of_Measure: Percent
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Median
      Attribute_Definition: Median of grain-size distribution
      Attribute_Definition_Source: Source report
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -1
          Range_Domain_Maximum: 4.93
          Attribute_Units_of_Measure: Phi
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Mean
      Attribute_Definition: First moment: Mean of grain-size distribution
      Attribute_Definition_Source: Source report
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.73
          Range_Domain_Maximum: 5.33
          Attribute_Units_of_Measure: Phi
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Sorting
      Attribute_Definition: Second moment: Standard deviation of grain-size distribution
      Attribute_Definition_Source: Source report
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.4
          Range_Domain_Maximum: 2.5
          Attribute_Units_of_Measure: Phi
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Skewness
      Attribute_Definition: Third moment: Skewness of grain-size distribution
      Attribute_Definition_Source: Source report
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -1.82
          Range_Domain_Maximum: 12.82
          Attribute_Units_of_Measure: Unitless
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Kurtosis
      Attribute_Definition: Fourth moment: Kurtosis of grain-size distribution
      Attribute_Definition_Source: Source report
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2.67
          Range_Domain_Maximum: 233.72
          Attribute_Units_of_Measure: Unitless
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Mean
      Attribute_Definition: Mean of grain-size distribution
      Attribute_Definition_Source: Folk, 1968
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -0.83
          Range_Domain_Maximum: 5.22
          Attribute_Units_of_Measure: Phi
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Sorting
      Attribute_Definition: Standard deviation about the grain size mean
      Attribute_Definition_Source: Folk, 1968
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.19
          Range_Domain_Maximum: 2.16
          Attribute_Units_of_Measure: Phi
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Skewness
      Attribute_Definition: Skewness of grain-size distribution
      Attribute_Definition_Source: Folk, 1968
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -0.68
          Range_Domain_Maximum: 1.0
          Attribute_Units_of_Measure: Unitless
          Attribute_Measurement_Resolution: 0.01
    Attribute:
      Attribute_Label: Kurtosis
      Attribute_Definition: Kurtosis of grain-size distribution
      Attribute_Definition_Source: Folk, 1968
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.48
          Range_Domain_Maximum: 30.51
          Attribute_Units_of_Measure: Phi
          Attribute_Measurement_Resolution: 0.01
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: United States Geological Survey
      Contact_Address:
        Address_Type: Mail
        Address: USGS Information Services
        Address: Box 25286
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225
      Contact_Voice_Telephone: 1-800-ASK-USGS
  Resource_Description: Open file report 91-375A
  Distribution_Liability: Although this dataset has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data.  Users of the data should be aware of limitations of the data due to possible imprecision due to navigational inaccuracies and limitations of the statistical data.
  Standard_Order_Process:
    Non-digital_Form: Report is available through the USGS; scanned images are also available online at: http://pubs.er.usgs.gov/pubs/ofr/ofr91-375A
    Fees: Unknown
  Technical_Prerequisites: Plug-in not required, but best viewed with downloadable program DjVu at http://www.lizardtech.com/download/dl_options.php?page=plugins
  Available_Time_Period:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 1991
Metadata_Reference_Information:
  Metadata_Date: 2005
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Jane A. Reid
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: Physical and mail
        Address: 400 Natural Bridges Drive
        City: Santa Cruz
        State_or_Province: CA
        Postal_Code: 95060
      Contact_Voice_Telephone: 831-427-4727
      Contact_Electronic_Mail_Address: jareid@usgs.gov
      Contact_Instructions: Email preferred
  Metadata_Standard_Name: CSDGM Version 2
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Access_Constraints: None
  Metadata_Use_Constraints: Metadata was written by a user of the data.  Any information contained in the physical report is authoritative and supercedes any information given here.