Identification_Information:
  Citation:
    Citation_Information:
      Originator:
        Charles W. Holmes (retired)

        Debra Willard
      Publication_Date: 2002
      Title: X-Radiographs Data
      Geospatial_Data_Presentation_Form: digital images
      Online_Linkage: http://sofia.usgs.gov/exchange/holmes/holmesxradio.html
  Description:
    Abstract:
      The x-radiographs of Florida Bay cores were used to examine the
      internal sediment structure of sediment contained in a core and assess
      whether the sediment was mixed.
    Purpose:
      In order to manage an ecosystem, it is imperative to define the rate
      at which ecologic, physical and chemical changes have occurred. The
      lack of historical records documenting ecological changes dictates
      that other methods are used to measure the rate of change. A common
      method of "dating" change is to measure the decay of naturally
      occurring radioactive nuclides.
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 1994
        Ending_Date: 1997
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -81.1
      East_Bounding_Coordinate: -80.4
      North_Bounding_Coordinate: 25.21
      South_Bounding_Coordinate: 24.9
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: none
      Theme_Keyword: radioactive isotopes
      Theme_Keyword: radionuclides
      Theme_Keyword: ecology
      Theme_Keyword: geology
      Theme_Keyword: hydrology
      Theme_Keyword: piston core
      Theme_Keyword: sediment cores
    Theme:
      Theme_Keyword_Thesaurus: ISO 19115 Topic Category
      Theme_Keyword: 007
      Theme_Keyword: 012
      Theme_Keyword: environment
      Theme_Keyword: inlandWaters
    Place:
      Place_Keyword_Thesaurus:
        Department of Commerce, 1995, Countries, Dependencies, Areas of
        Special Sovereignty, and Their Principal Administrative Divisions, 
        Federal Information Processing Standard (FIPS) 10-4, Washington, DC,
        National Institute of Standards and Technology
      Place_Keyword: United States
      Place_Keyword: US
    Place:
      Place_Keyword_Thesaurus:
        U.S. Department of Commerce, 1987, Codes for the identification of
        the States, the District of Columbia and the outlying areas of the
        United States, and associated areas (Federal Information Processing
        Standard 5-2): Washington, DC, NIST
      Place_Keyword: Florida
      Place_Keyword: FL
    Place:
      Place_Keyword_Thesaurus:
        Department of Commerce, 1990, Counties and Equivalent Entities of
        the United States, Its Possessions, and Associated Areas, FIPS 6-3,
        Washington, DC, National Institute of Standards and Technology
      Place_Keyword: Monroe County
      Place_Keyword: Miami-Dade County
    Place:
      Place_Keyword_Thesaurus: USGS Geographic Names Information System
      Place_Keyword: Florida Bay
      Place_Keyword: Cluett Key
      Place_Keyword: Bob Allen Key
      Place_Keyword: Rabbit Key
      Place_Keyword: Whipray Basin
      Place_Keyword: Rankin Bight
      Place_Keyword: Lake Ingraham
      Place_Keyword: Johnson Key
      Place_Keyword: Porjoe Key
      Place_Keyword: Pass Key
      Place_Keyword: Crocodile Point
      Place_Keyword: Trout Creek
      Place_Keyword: Little Madeira Bay
    Place:
      Place_Keyword_Thesaurus: none
      Place_Keyword: Central Everglades
      Place_Keyword: Russell Bank
  Access_Constraints: none
  Use_Constraints: none
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Debra A Willard
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: 926A National Center
        City: Reston
        State_or_Province: VA
        Postal_Code: 20192
      Contact_Voice_Telephone: 703 648 5320
      Contact_Facsimile_Telephone: 703 648 6953
      Contact_Electronic_Mail_Address: dwillard@usgs.gov
  Native_Data_Set_Environment: JPEG images
  Cross_Reference:
    Citation_Information:
      Originator:
        Gough, L. P.

        Kotra, R. K.; Holmes, C. W.; Orem, W. H.; Hageman, P. L.; Briggs, P.
        H.; Meier, A. L.; Brown, Z. A.
      Publication_Date: 2000
      Title:
        Regional Geochemistry of Metals in Organic-Rich Sediments, Sawgrass,
        and Surface Water from Taylor Slough, Florida
      Geospatial_Data_Presentation_Form: report
      Series_Information:
        Series_Name: USGS Open-File Report
        Issue_Identification: 00-327
      Publication_Information:
        Publication_Place: Reston, VA
        Publisher: U.S. Geological Survey
      Online_Linkage: http://sofia.usgs.gov/publications/ofr/00-327/
Data_Quality_Information:
  Logical_Consistency_Report: unknown
  Completeness_Report: unknown
  Lineage:
    Process_Step:
      Process_Description:
        X-radiographs were made of cores from Rabbit Key, Cluett Key Pond,
        Whipray Basin,Bob Allen Key, Rankin Bight, Lake Ingraham, north and
        south Russell Bank, Johnson Key, Porjoe Key, Pass Key, Crocodile
        Point, Trout Creek Spiit, and Little Madeira Bay to assess sediment
        disturbance over the length of the cores.  The x-radiographs were
        made in a hospital using their x-ray equipment.
      Process_Date: Unknown
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Debra A Willard
            Contact_Organization: U.S. Geological Survey
          Contact_Address:
            Address_Type: mailing address
            Address: 926A National Center
            City: Reston
            State_or_Province: VA
            Postal_Code: 20192
          Contact_Voice_Telephone: 703 648 5320
          Contact_Facsimile_Telephone: 703 648 6953
          Contact_Electronic_Mail_Address: dwillard@usgs.gov
Spatial_Data_Organization_Information:
  Indirect_Spatial_Reference: Florida Bay
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.01
      Longitude_Resolution: 0.01
      Geographic_Coordinate_Units: Decimal degrees
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137
      Denominator_of_Flattening_Ratio: 298.257
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Heather S.Henkel
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: 600 Fourth St. South
        City: St. Petersburg
        State_or_Province: FL
        Postal_Code: 33701
        Country: USA
      Contact_Voice_Telephone: 727 803-8747 ext 3028
      Contact_Facsimile_Telephone: 727 803-2030
      Contact_Electronic_Mail_Address: hhenkel@usgs.gov
  Resource_Description: X-Radiographs Data
  Distribution_Liability: No warrantees are implied or explicit for the data
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: JPEG
        Format_Version_Number: unknown
        Transfer_Size: 0.26
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://sofia.usgs.gov/exchange/holmes/holmesxradio.html
          Access_Instructions: Data may be downloaded from the SOFIA website
    Fees: none
Metadata_Reference_Information:
  Metadata_Date: 20071031
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Heather Henkel
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 600 Fourth Street South
        City: St. Petersburg
        State_or_Province: FL
        Postal_Code: 33701
        Country: USA
      Contact_Voice_Telephone: 727 803-8747 ext 3028
      Contact_Facsimile_Telephone: 727 803-2030
      Contact_Electronic_Mail_Address: sofia-metadata@usgs.gov
  Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998