Identification_Information:
  Citation:
    Citation_Information:
      Originator: Feliks M. Persits, Contractor to USGS (comp.)
      Originator: Douglas W. Steinshouer, Contractor to USGS (comp.)
      Originator: Sandra J. Lindquist, Contractor to USGS (comp.) and others.
      Publication_Date: 20000600
      Title:
        au_geog
        Assessment Unit Geological Characterizations
        (Unprojected latitude and longitude coordinates)
      Geospatial_Data_Presentation_Form: Arc/Info coverage
      Publication_Information:
        Publication_Place: Denver, CO
        Publisher: U.S. Geological Survey
      Larger_Work_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 20000600
          Title:
            World Petroleum Assessment 2000
            Digital Data Series (DDS) 60
          Publication_Information:
            Publication_Place: Denver, CO
            Publisher: U.S. Geological Survey
          Series_Information:
            Series_Name: U.S. Geological Survey Digital Data Series
            Issue_Identification:
              World Petroleum Assessment 2000
              Digital Data Series (DDS) 60
          Online_Linkage: http://energy.cr.usgs.gov
  Description:
    Abstract:
      This coverage includes arcs and
      regions that describe U.S. Geological Survey defined
      petroleum resource Assessment Units of the World. Each
      assessment unit is defined as a mappable volume of rock
      within a total petroleum system that encompasses fields
      (discovered and undiscovered) that share similar geologic
      traits and socio-economic factors. The fields inside an
      assessment are a sufficiently homogenous population that a
      single methodology of resource assessment is applicable.
      Assessment units are described by U.S. Geological
      Survey research scientists on the basis of available
      geologic knowledge, exploration and production histories,
      and extensive literature searches. Assessment units are
      identified with a numeric code derived from the numeric
      code of the World Geologic Provinces defined by the U.S.
      Geological Survey World Petroleum Assessment 2000.
      Most assessment units are contained within a single
      geologic province, but there are numerous cases where
      units span more than one province. This coverage presents
      geologic characterizations of the elements defining each
      assessment unit.
    Purpose:
      This coverage is intended to delineate the Assessment Units
      used in the preparation of World Petroleum Assessment 2000
      and to present geologic characterizations of the source
      rocks, migration paths, traps and seals defining each unit.
    Supplemental_Information:
      For data management purposes the world was divided into eight
      energy regions corresponding approximately to the economic
      regions of the world as defined by the U.S. Department of
      State.  Except in the case of the United States, most region
      and province boundaries are not controlled by the presence of
      political or administrative boundaries. Geologic province
      boundaries are determined by World Energy Project Regional
      Coordinators and others on the basis of natural geologic
      entities and can include a dominant geologic structural
      element or a number of continuous elements. Total Petroleum
      Systems are defined, within provinces considered for
      assessment analysis, as mappable entities encompassing
      genetically related petroleum that occurs in seeps, shows
      and accumulations (discovered and undiscovered) that have
      been generated by a pod, or by closely related pods, of
      mature source rock, together with the essential mappable
      geologic elements (source, reservoir, seal and overburden
      rocks) that control fundamental processes of generation,
      migration, entrapment and preservation of petroleum.
      Total petroleum systems can be equated to a single
      Assessment Unit, but can be subdivided into two or more
      assessment units so that each unit is sufficiently
      homogenous to assess individually. Assessment units are
      numbered from the total petroleum system to which they
      belong and they inherit the prefix references to the
      geologic province and energy region. Because many
      assessment units overlap with one another, this coverage
      has Arc/Info region topology. Each assessment unit
      constitutes a region.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 20000000
    Currentness_Reference: Publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: Not planned
  Data_Set_Credit:
    Digital compilation - Feliks M. Persits and Douglas W. Steinshouer
    Editing and quality assurance - Feliks M. Persits and Douglas W. Steinshouer
    Geological analysis characterization - Sandra J. Lindquist
    Documentation and metadata - Douglas W. Steinshouer
    Delineation of assessment units - USGS World Energy Project Regional Coordinators and others

    The Regional Coordinators are

    Region 1 - The Former Soviet Union -
    Gregory F. Ulmishek, USGS, Denver, CO
    Region 2 - The Middle East and North Africa -
    Thomas S. Ahlbrandt, USGS, Denver, CO
    Region 3 - Asia Pacific -
    Robert T. Ryder, USGS, Reston, VA
    Region 4 - Europe -
    Donald L. Gautier, USGS, Menlo Park, CA
    Region 5 - North America -
    Leslie B. Magoon III, USGS, Menlo Park, CA
    Region 6 - Central and South America -
    Christopher J. Schenk, USGS, Denver, CO
    Region 7 - Sub-Saharan Africa -
    Ronald R. Charpentier, USGS, Denver, CO
    Region 8 - South Asia - Craig J. Wandrey, USGS, Denver, CO
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -180.000000
      East_Bounding_Coordinate: 180.000000
      North_Bounding_Coordinate: 90.000000
      South_Bounding_Coordinate: -90.000000
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Assessment Unit
      Theme_Keyword: Geologic characterization
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: World
      Place_Keyword: Former Soviet Union
      Place_Keyword: The Middle East and North Africa
      Place_Keyword: Asia Pacific
      Place_Keyword: Europe
      Place_Keyword: North America
      Place_Keyword: Central and South America
      Place_Keyword: Sub-Saharan Africa and Antarctica
      Place_Keyword: South Asia
  Access_Constraints: None
  Use_Constraints:
    At the time of this metadata, it is unclear whether Arc/Info
    region topology can be successfully imported into other
    G.I.S. software. It may be advisable to use the shape file of this data.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Thomas S. Ahlbrandt
      Contact_Position: Project Chief - World Petroleum Assessment 2000
      Contact_Address:
        Address_Type: mailing and physical address
        Address:
          U.S. Geological Survey, MS 939
          Box 25046
          Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: U.S.A.
      Contact_Voice_Telephone: (303) 236-5776
      Contact_Facsimile_Telephone: (303) 236-8822
      Contact_Electronic_Mail_Address: ahlbrandt@usgs.gov
      Hours_of_Service: 9 am. to 5 pm. U.S. Mountain Time Zone
  Native_Data_Set_Environment: SunOS, 5.6, sun4u UNIX Arc/Info v 7.1.2
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      Names and numeric codes have been reviewed by Regional
      Coordinators. Geologic characterization attributes
      have been reviewed.
  Logical_Consistency_Report:
    Region and polygon topologies are present. Each polygon
    has one unique label point, there are no dangles,
    polygons are bounded at extent of coverage. Each
    region represents an assessment unit and is defined
    as the set of polygons containing the text string of
    that assessment unit's numeric code in the PAT item Au.
    There are numerous overlapping regions. This coverage
    contains 159 Arc/Info region entities, not accounted for
    in the Spatial Data Organization Information section
    of this metadata document. There are some polygons with
    more than one label point, this has not been addressed
    because regions are the feature of interest.
  Completeness_Report:
    Page-sized maps have been printed and distributed
    to the Regional Coordinators for review of
    assessment unit boundaries, numeric codes and names.
    Updates have been made where necessary.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        It is not possible to calculate a definitive measure
        of the horizontal positional accuracy of this
        coverage because it is a composite data set
        compiled from a variety of sources using a variety
        of methodologies. Positional accuracy is dependent
        upon the extent of geologic knowledge available
        about the area delineated for each assessment
        unit. This includes the density of oil/gas field
        centerpoints and well locations in the
        Petroconsultants Exploration and Production
        Database (1996) and, in the case of Canada,
        the density of oil/gas pool centerpoints from the NRG
        Associates, Inc. Significant Oil and Gas Pools of
        Canada Database (1996).  The maximum possible accuracy
        is twice the fuzzy tolerance of 500 meters, or
        1000 meters. Because of the heterogenous variety of source data,
        generally of small-scale, used in delineating the province boundaries,
        there is no datum or spheroid defined.  At the average estimated
        compilation scale of 1:5,000,000, there is no geodetic control
        to define a datum or a spheroid without introducing false precision.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Timothy R. Klett and others
          Publication_Date: 1997000
          Title:
            Open File Report 97-463
            Ranking of the World's Oil and Gas Provinces
            by Known Petroleum Volumes
          Publication_Information:
            Publication_Place: Denver, CO
            Publisher: U.S. Geological Survey
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 199700000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: OFR97463
      Source_Contribution: Geologic province numeric codes
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Feliks M. Persits and others
          Publication_Date: 19980000
          Title:
            Open File Report 97-470A
            Maps Showing Geology, Oil and Gas Fields
            and Geologic Provinces of Africa
          Geospatial_Data_Presentation_Form: Arc/Info coverage
          Series_Information:
            Series_Name:
              Open File Report 97-470;
              World Energy Data on CD-ROM
            Issue_Identification: Volume A; Africa
          Publication_Information:
            Publication_Place: Denver, CO
            Publisher: U.S. Geological Survey
          Online_Linkage: http://energy.cr.usgs.gov/energy/WorldEnergy/WEnergy.html
      Source_Scale_Denominator: 12500000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19980000
        Source_Currentness_Reference: Publication date
      Source_Citation_Abbreviation: OFR97470A
      Source_Contribution: Surficial Geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Richard M. Pollastro and others
          Publication_Date: 19980000
          Title:
            Open File Report 97-470B
            Maps Showing Geology, Oil and Gas Fields
            and Geologic Provinces of the Arabian Peninsula
          Geospatial_Data_Presentation_Form: Arc/Info coverage
          Series_Information:
            Series_Name:
              Open File Report 97-470;
              World Energy Data on CD-ROM
            Issue_Identification: Volume B; The Arabian Peninsula
          Publication_Information:
            Publication_Place: Denver, CO
            Publisher: U.S. Geological Survey
          Online_Linkage: http://energy.cr.usgs.gov/energy/WorldEnergy/WEnergy.html
      Source_Scale_Denominator: 2000000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19980000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: OFR97470B
      Source_Contribution: Surficial geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Craig J. Wandrey and Ben E. Law
          Publication_Date: 19980000
          Title:
            Open File Report 97-470C
            Maps Showing Geology, Oil and Gas Fields
            and Geologic Provinces of South Asia
          Geospatial_Data_Presentation_Form: Arc/Info coverage
          Series_Information:
            Series_Name:
              Open File Report 97-470;
              World Energy Data on CD-ROM
            Issue_Identification: Volume C; South Asia
          Publication_Information:
            Publication_Place: Denver, CO
            Publisher: U.S. Geological Survey
          Online_Linkage: http://energy.cr.usgs.gov/energy/WorldEnergy/WEnergy.html
      Source_Scale_Denominator: 5000000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19980000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: OFR97470C
      Source_Contribution: Surficial geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Christopher J. Schenk and others
          Publication_Date: 19990000
          Title:
            Open File Report 97-470D
            Maps Showing Geology, Oil and Gas Fields,
            and Geologic Provinces of South America
          Geospatial_Data_Presentation_Form: Arc/Info coverage
          Series_Information:
            Series_Name:
              Open File Report 97-470;
              World Energy Data on CD-ROM
            Issue_Identification: Volume D; South America
          Publication_Information:
            Publication_Place: Denver, CO
            Publisher: U.S. Geological Survey
          Online_Linkage: http://energy.cr.usgs.gov/energy/WorldEnergy/WEnergy.html
      Source_Scale_Denominator: 7500000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19990000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: OFR97470D
      Source_Contribution: Surficial Geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Feliks M. Persits and others
          Publication_Date: 19980000
          Title:
            Open File Report 97-470E
            Maps Showing Geology, Oil and Gas Fields
            and Geologic Provinces of the Former Soviet Union
          Geospatial_Data_Presentation_Form: Arc/Info coverage
          Series_Information:
            Series_Name:
              Open File Report 97-470;
              World Energy Data on CD-ROM
            Issue_Identification: Volume E; The Former Soviet Union
          Publication_Information:
            Publication_Place: Denver, CO
            Publisher: U.S. Geological Survey
          Online_Linkage: http://energy.cr.usgs.gov/energy/WorldEnergy/WEnergy.html
      Source_Scale_Denominator: 7500000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19980000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: OFR97470E
      Source_Contribution: Surficial Geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Douglas W. Steinshouer and others
          Publication_Date: 19990000
          Title:
            Open File Report 97-470F
            Maps Showing Geology, Oil and Gas Fields,
            and Geologic Provinces of the Asia Pacific Region
          Geospatial_Data_Presentation_Form: Arc/Info coverage
          Series_Information:
            Series_Name:
              Open File Report 97-470;
              World Energy Data on CD-ROM
            Issue_Identification: Volume F; The Asia Pacific Region
          Online_Linkage: http://energy.cr.usgs.gov/energy/WorldEnergy/WEnergy.html
      Source_Scale_Denominator: 7500000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19990000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: OFR97470F
      Source_Contribution: Surficial Geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Richard M. Pollastro and others
          Publication_Date: 20000000
          Title:
            Open File Report 97-470G
            Maps Showing Geology, Oil and Gas Fields,
            and Geologic Provinces of Iran
          Geospatial_Data_Presentation_Form: Arc/Info coverage
          Series_Information:
            Series_Name:
              Open File Report 97-470;
              World Energy Data on CD-ROM
            Issue_Identification: Volume G; Iran
          Publication_Information:
            Publication_Place: Denver, CO
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2000000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 20000000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: OFR97470G
      Source_Contribution: Surficial geology
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Petroconsultants International Data Corp.
          Publication_Date: 19960000
          Title: Petroconsultants Exploration and Production Database
          Geospatial_Data_Presentation_Form: Data tables
          Publication_Information:
            Publication_Place: Houston, TX
            Publisher: Petroconsultants International Data Corp.
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19960000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: PCI
      Source_Contribution: Oil and gas field centerpoints and oil and gas well locations
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: NRG Associates, Inc.
          Publication_Date: 19960000
          Title: The Significant Oil and Gas Pools of Canada Database
          Geospatial_Data_Presentation_Form: Data tables
          Publication_Information:
            Publication_Place: Colorado Springs, CO
            Publisher: NRG Associates, Inc.
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19960000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: NGR
      Source_Contribution: Oil and gas pool locations in Canada
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Environmental Systems Research Institute, Inc. (ESRI)
          Publication_Date: 19920000
          Title: Arcworld Digital Map of the World
          Geospatial_Data_Presentation_Form: Arc/Info coverages
      Source_Scale_Denominator: 3000000
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19920000
        Source_Currentness_Reference: Date of publication
      Source_Citation_Abbreviation: ESRI
      Source_Contribution:
        Shorelines, political boundaries, rivers and cities base
        cartographic layers as a reference background on maps used
        to define assessment units.
    Process_Step:
      Process_Description:
        Large maps scaled to the extent of each assessed geologic
        province are plotted portraying geologic provinces along with
        shorelines, rivers, surficial geology, political boundaries,
        cities, oil and gas field centerpoints, and oil and gas wells
        and provided to geologists conducting assessment, who delineate
        total petroleum systems, minimum petroleum systems, assessment
        units and pods of active source rock on the maps with colored
        pencils. In some cases structural features are digitized from
        various map sources and plotted on the maps as additional
        thematic layers.
      Process_Date: 19990000
    Process_Step:
      Process_Description:
        The geologic province maps on which geologists have drawn
        boundaries of assessment units are scanned as digital
        images. Digital images are registered and rectified, and
        assessment unit boundaries are digitized on-screen in Arc/Info
        Arcedit, as coverages based on each geologic province. Each
        coverage has polygon topology created with the CLEAN and
        BUILD commands. Region topology is defined as each assessment
        unit comprising a region.
      Process_Date: 19990000
    Process_Step:
      Process_Description:
        Maps depicting the geologic provinces, total petroleum systems,
        assessment units and base map layers are plotted and
        submitted to assessing geologists for verification of
        digital capture of assessment unit boundaries, names
        and numeric codes.  When necessary, geologists indicate
        needed changes, maps are scanned and changes are digitized.
        Changes are verified by plotting additional maps, digitizing
        changes and editing coverages until geologists are satisfied.
      Process_Date: 19990000
    Process_Step:
      Process_Description:
        Assessment unit coverages based on geologic provinces
        are merged to produce a world assessment unit coverage
        with region topology
      Process_Date: 19990000
    Process_Step:
      Process_Description:
        Page-sized maps of each assessment unit are printed
        and submitted to Regional Coordinators for verification of
        assessment unit boundaries, names and numeric codes.
        When necessary, changes are made and the world total petroleum
        system coverage is updated
      Process_Date: 20000000
    Process_Step:
      Process_Description:
        Geologic characterizations are abstracted from standard
        assessment forms prepared by the geologists for each
        assessment unit and placed in a Microsoft Excel table.
      Process_Date: 20000000
    Process_Step:
      Process_Description:
        Data table of assessment unit geologic characterizations
        is imported into INFO and joined to the Region Attribute Table
        of the world assessment unit coverage
      Process_Date: 20000310
    Process_Step:
      Process_Description:
        Coverage of assessment units is projected to geographic latitude and longitude coordinates.
      Process_Date: 20000324
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
      Point_and_Vector_Object_Count: 270
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geodetic_Model:
      Horizontal_Datum_Name: Not defined
      Ellipsoid_Name: Sphere
      Semi-major_Axis: 6377097
      Denominator_of_Flattening_Ratio: 9999
    Geographic:
      Latitude_Resolution: 0.001
      Longitude_Resolution: 0.001
      Geographic_Coordinate_Units: Decimal degrees
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: au_geo.patasm
      Entity_Type_Definition:
        Name, numeric code and geologic characterizations of
        Assessment Units delineated by World Petroleum
        Assessment 2000. Region Attribute Table.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Area
      Attribute_Definition: Sum of area of polygons comprising region.
      Attribute_Definition_Source: Software computed
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1867804378.64960
          Range_Domain_Maximum: 1635854258130.40310
    Attribute:
      Attribute_Label: Perimeter
      Attribute_Definition: Perimeter of collection of polygons comprising region.
      Attribute_Definition_Source: Software computed
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 290856.73402
          Range_Domain_Maximum: 8272101.25304
    Attribute:
      Attribute_Label: Asm#
      Attribute_Definition: Internal feature id
      Attribute_Definition_Source: User Defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 270
    Attribute:
      Attribute_Label: Asm-id
      Attribute_Definition: Feature identification number.
      Attribute_Definition_Source: User Defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 11108
    Attribute:
      Attribute_Label: Au
      Attribute_Definition:
        Unique numeric identifier of assessment unit (Character field)
        First digit references energy region
        Second three digits reference geologic province
        Third two digits identify total petroleum system
        Fourth two digits identify assessment unit.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
    Attribute:
      Attribute_Label: Name
      Attribute_Definition: Assessment Unit Name
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character field
    Attribute:
      Attribute_Label: O-g
      Attribute_Definition: Major commodity
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Oil
          Enumerated_Domain_Value_Definition:
            Gas to oil ratio is less than 20,000 cubic feet of gas/barrel of oil (CFG/BO)
            for both discovered and anticipated undiscovered resources.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Gas
          Enumerated_Domain_Value_Definition:
            Gas to oil ratio is equal to or greater than 20,000 cubic feet of gas/barrel of oil (CFG/BO)
            for both discovered and anticipated undiscovered resources.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: NA
          Enumerated_Domain_Value_Definition: Determination of major commodity is not available
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Srage
      Attribute_Definition:
        Specific age of source rock.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Pc
          Enumerated_Domain_Value_Definition: Precambrian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UOrd
          Enumerated_Domain_Value_Definition: Upper Ordovician source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LSil
          Enumerated_Domain_Value_Definition: Lower Silurian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Sil
          Enumerated_Domain_Value_Definition: Undifferentiated Silurian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Sil-Dev
          Enumerated_Domain_Value_Definition: Silurian to Devonian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Dev
          Enumerated_Domain_Value_Definition: Undifferentiated Devonian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Dev+Mz+Ng
          Enumerated_Domain_Value_Definition: Devonian and Mesozoic and Neogene source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MDev
          Enumerated_Domain_Value_Definition: Middle Devonian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UDev
          Enumerated_Domain_Value_Definition: Upper Devonian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UDev-LCarb
          Enumerated_Domain_Value_Definition: Upper Devonian to Lower Carboniferous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UDev-Carb
          Enumerated_Domain_Value_Definition: Upper Devonian to Carboniferous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LPz
          Enumerated_Domain_Value_Definition: Undifferentiated Lower Paleozoic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LCarb
          Enumerated_Domain_Value_Definition: Lower Carboniferous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Carb
          Enumerated_Domain_Value_Definition: Undifferentiated Carboniferous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Carb+J
          Enumerated_Domain_Value_Definition: Carboniferous and Jurassic source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LPerm
          Enumerated_Domain_Value_Definition: Lower Permian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Perm
          Enumerated_Domain_Value_Definition: Undifferentiated Permian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Perm+Tri+K+Plc
          Enumerated_Domain_Value_Definition:
            Permian and Triassic and Cretaceous and Paleocene source rocks,
            multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UPz
          Enumerated_Domain_Value_Definition: Undifferentiated Upper Paleozoic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: L-MTri
          Enumerated_Domain_Value_Definition: Lower to Middle Triassic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UTri
          Enumerated_Domain_Value_Definition: Upper Triassic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Tri
          Enumerated_Domain_Value_Definition: Undifferentiated Triassic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Ng+Tri
          Enumerated_Domain_Value_Definition: Triassic and Neogene source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Tri-LJ
          Enumerated_Domain_Value_Definition: Triassic to Lower Jurassic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LJ
          Enumerated_Domain_Value_Definition: Lower Jurassic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: L-MJ
          Enumerated_Domain_Value_Definition: Lower to Middle Jurassic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MJ
          Enumerated_Domain_Value_Definition: Middle Jurassic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: J
          Enumerated_Domain_Value_Definition: Undifferentiated Jurassic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: J-LK
          Enumerated_Domain_Value_Definition: Jurassic to Lower Cretaceous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: J-K
          Enumerated_Domain_Value_Definition: Jurassic to Cretaceous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LK
          Enumerated_Domain_Value_Definition: Lower Cretaceous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LK-Ng
          Enumerated_Domain_Value_Definition: Lower Cretaceous to Neogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MK
          Enumerated_Domain_Value_Definition: Middle Cretaceous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MK+Pg
          Enumerated_Domain_Value_Definition: Middle Cretaceous and Paleogene source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK
          Enumerated_Domain_Value_Definition: Upper Cretaceous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK-Pg
          Enumerated_Domain_Value_Definition: Upper Cretaceous to Paleogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK-Mio
          Enumerated_Domain_Value_Definition: Upper Cretaceous to Miocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K
          Enumerated_Domain_Value_Definition: Undifferentiated Cretaceous source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K-Paleoc
          Enumerated_Domain_Value_Definition: Cretaceous to Paleocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K-Pg
          Enumerated_Domain_Value_Definition: Cretaceous to Paleogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPz
          Enumerated_Domain_Value_Definition: Upper Mesozoic to Lower Cenozoic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Paleoc
          Enumerated_Domain_Value_Definition: Paleocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Paleoc-Eo
          Enumerated_Domain_Value_Definition: Paleocene to Eocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Eo-Olig
          Enumerated_Domain_Value_Definition: Eocene to Oligocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Eo-Mio
          Enumerated_Domain_Value_Definition: Eocene to Miocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pg
          Enumerated_Domain_Value_Definition: Undifferentiated Paleogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Olig
          Enumerated_Domain_Value_Definition: Oligocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Olig-Mio
          Enumerated_Domain_Value_Definition: Oligocene to Miocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mio
          Enumerated_Domain_Value_Definition: Miocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mio-Plio
          Enumerated_Domain_Value_Definition: Miocene to Pliocene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Ng
          Enumerated_Domain_Value_Definition: Undifferentiated Neogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Sra_gen
      Attribute_Definition:
        Generalized age of source rock.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Pc
          Enumerated_Domain_Value_Definition: Precambrian source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pz
          Enumerated_Domain_Value_Definition: Paleozoic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pz+Mz
          Enumerated_Domain_Value_Definition: Paleozoic and Mesozoic source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pz+Mz+Pg
          Enumerated_Domain_Value_Definition: Paleozoic and Mesozoic and Paleogene source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pz+Mz+Ng
          Enumerated_Domain_Value_Definition: Paleozoic and Mesozoic and Neogene source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PzMz
          Enumerated_Domain_Value_Definition: Upper Paleozoic to Lower Mesozoic source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mz+Pg
          Enumerated_Domain_Value_Definition: Mesozoic and Paleogene source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mz+Ng
          Enumerated_Domain_Value_Definition: Mesozoic and Neogene source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPg
          Enumerated_Domain_Value_Definition: Upper Mesozoic to Paleogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPgNg
          Enumerated_Domain_Value_Definition: Upper Mesozoic to Neogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pg
          Enumerated_Domain_Value_Definition: Paleogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pg+Ng
          Enumerated_Domain_Value_Definition: Paleogene and Neogene source rocks, multiple pods.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PgNg
          Enumerated_Domain_Value_Definition: Paleogene to Neogene source rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Srchar
      Attribute_Definition:
        Source Rock Character; a combination of depositional setting and
        general geochemical characteristics, shale was not distinguished
        from more carbonate-rich source rock. The following depositional
        settings are combined together in some cases-

        Coaly, terrigenous strata
        Lacustrine
        Shallow marine (platform or shelf, occasionally anoxic)
        Deep marine (basin or slope, commonly anoxic)

        There is no significance in the order of the elements of compound values.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: C
          Enumerated_Domain_Value_Definition: Coaly, terrigenous strata.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CL
          Enumerated_Domain_Value_Definition: Coaly, terrigenous strata and lacustrine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CLS
          Enumerated_Domain_Value_Definition:
            Coaly, terrigenous strata and lacustrine shale or carbonate and
            shallow marine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CS
          Enumerated_Domain_Value_Definition: Coaly, terrigenous strata and shallow marine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CSD
          Enumerated_Domain_Value_Definition:
            Coaly, terrigenous strata and shallow marine shale or carbonate
            and deep marine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: L
          Enumerated_Domain_Value_Definition: Lacustrine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LS
          Enumerated_Domain_Value_Definition: Lacustrine shale or carbonate and shallow marine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LSD
          Enumerated_Domain_Value_Definition:
            Lacustrine shale or carbonate and shallow marine shale or carbonate
            and deep marine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: S
          Enumerated_Domain_Value_Definition: Shallow marine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: SD
          Enumerated_Domain_Value_Definition: Shallow marine shale or carbonate and deep marine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: D
          Enumerated_Domain_Value_Definition: Deep marine shale or carbonate.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Rrage
      Attribute_Definition:
        Age of reservoir rock.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Pc
          Enumerated_Domain_Value_Definition: Precambrian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pc+LK
          Enumerated_Domain_Value_Definition: Precambrian and Lower Cretaceous reservoir rocks, multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pc-Camb
          Enumerated_Domain_Value_Definition: Precambrian to Cambrian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pc-LPz
          Enumerated_Domain_Value_Definition: Precambrian to Lower Paleozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: C+Ord+Tri
          Enumerated_Domain_Value_Definition: Cambrian and Ordovician and Triassic reservoir rocks, multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Ord+Tri
          Enumerated_Domain_Value_Definition: Ordovician and Triassic reservoir rocks, multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MDev
          Enumerated_Domain_Value_Definition: Middle Devonian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UDev
          Enumerated_Domain_Value_Definition: Upper Devonian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UDev-Carb
          Enumerated_Domain_Value_Definition: Upper Devonian to Carboniferous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UDev-LK
          Enumerated_Domain_Value_Definition: Upper Devonian to Lower Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Dev
          Enumerated_Domain_Value_Definition: Undifferentiated Devonian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Dev-Carb
          Enumerated_Domain_Value_Definition: Devonian to Carboniferous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LPz
          Enumerated_Domain_Value_Definition: Undifferentiated Lower Paleozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LPz-Tert
          Enumerated_Domain_Value_Definition: Lower Paleozoic to Tertiary reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LCarb
          Enumerated_Domain_Value_Definition: Lower Carboniferous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LCarb-LK
          Enumerated_Domain_Value_Definition: Lower Carboniferous to Lower Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Carb
          Enumerated_Domain_Value_Definition: Undifferentiated Carboniferous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Carb-LPerm
          Enumerated_Domain_Value_Definition: Carboniferous to Lower Permian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LPerm
          Enumerated_Domain_Value_Definition: Lower Permian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UPerm
          Enumerated_Domain_Value_Definition: Upper Permian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Perm+K+Pg
          Enumerated_Domain_Value_Definition: Permian and Cretaceous and Paleogene reservoir rocks, multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Permo-Tri
          Enumerated_Domain_Value_Definition: Permian to Triassic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pz
          Enumerated_Domain_Value_Definition: Undifferentiated Paleozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UPz
          Enumerated_Domain_Value_Definition: Undifferentiated Upper Paleozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UPz+J-Pg
          Enumerated_Domain_Value_Definition:
            Upper Paleozoic and Jurassic to Paleogene reservoir rocks,
            multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UPz-Tri
          Enumerated_Domain_Value_Definition: Upper Paleozoic to Triassic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UPz-Mz
          Enumerated_Domain_Value_Definition: Upper Paleozoic to Mesozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PzMz
          Enumerated_Domain_Value_Definition: Upper Paleozoic to Lower Mesozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UTri-LK
          Enumerated_Domain_Value_Definition: Upper Triassic to Lower Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Tri-MJ
          Enumerated_Domain_Value_Definition: Triassic to Middle Jurassic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Tri-J
          Enumerated_Domain_Value_Definition: Triassic to Jurassic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LJ
          Enumerated_Domain_Value_Definition: Lower Jurassic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: L-MJ
          Enumerated_Domain_Value_Definition: Lower to Middle Jurassic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MJ
          Enumerated_Domain_Value_Definition: Middle Jurassic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MJ-LK
          Enumerated_Domain_Value_Definition: Middle Jurassic to Lower Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UJ
          Enumerated_Domain_Value_Definition: Upper Jurassic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UJ-LK
          Enumerated_Domain_Value_Definition: Upper Jurassic to Lower Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UJ-K
          Enumerated_Domain_Value_Definition: Upper Jurassic to Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: J-K
          Enumerated_Domain_Value_Definition: Jurassic to Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: J-Pg
          Enumerated_Domain_Value_Definition: Jurassic to Paleogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: J-Tert
          Enumerated_Domain_Value_Definition: Jurassic to Tertiary reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LK
          Enumerated_Domain_Value_Definition: Lower Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MK
          Enumerated_Domain_Value_Definition: Middle Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MK+Pg
          Enumerated_Domain_Value_Definition: Middle Cretaceous and Paleogene reservoir rocks, multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MK-Tert
          Enumerated_Domain_Value_Definition: Middle Cretaceous to Tertiary reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK
          Enumerated_Domain_Value_Definition: Upper Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK-Paleoc
          Enumerated_Domain_Value_Definition: Upper Cretaceous to Paleocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK-Pg
          Enumerated_Domain_Value_Definition: Upper Cretaceous to Paleogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK-Mio
          Enumerated_Domain_Value_Definition: Upper Cretaceous to Miocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK-Ng
          Enumerated_Domain_Value_Definition: Upper Cretaceous to Neogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: UK-Tert
          Enumerated_Domain_Value_Definition: Upper Cretaceous to Tertiary reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K

          Enumerated_Domain_Value_Definition: Undifferentiated Cretaceous reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K+Eo
          Enumerated_Domain_Value_Definition: Cretaceous and Eocene reservoir rocks, multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K+Olig-Mio
          Enumerated_Domain_Value_Definition:
            Cretaceous and Oligocene to Miocene reservoir rocks,
            two different reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K-Plc
          Enumerated_Domain_Value_Definition: Cretaceous to Paleocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K-Eo
          Enumerated_Domain_Value_Definition: Cretaceous to Eocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K-Pg
          Enumerated_Domain_Value_Definition: Cretaceous to Paleogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K-Ng
          Enumerated_Domain_Value_Definition: Cretaceous to Neogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: K-Tert
          Enumerated_Domain_Value_Definition: Cretaceous to Tertiary reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: KCz
          Enumerated_Domain_Value_Definition: Upper Cretaceous to Lower Cenozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Eo+Mio
          Enumerated_Domain_Value_Definition: Eocene and Miocene reservoir rocks, multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Eo-Olig
          Enumerated_Domain_Value_Definition: Eocene to Oligocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Eo-Mio
          Enumerated_Domain_Value_Definition: Eocene to Miocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Olig
          Enumerated_Domain_Value_Definition: Oligocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Olig-Mio
          Enumerated_Domain_Value_Definition: Oligocene to Miocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mio
          Enumerated_Domain_Value_Definition: Miocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mio-Plio
          Enumerated_Domain_Value_Definition: Miocene to Pliocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Plio
          Enumerated_Domain_Value_Definition: Pliocene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Rrage_gen
      Attribute_Definition:
        Generalized reservoir age.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Pc
          Enumerated_Domain_Value_Definition: Precambrian reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pc+Mz
          Enumerated_Domain_Value_Definition: Precambrian and Mesozoic source rocks, multiple reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PcPz
          Enumerated_Domain_Value_Definition: Precambrian to Paleozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PzMz
          Enumerated_Domain_Value_Definition: Paleozoic to Mesozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PzMzPg
          Enumerated_Domain_Value_Definition: Paleozoic to Paleogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PzMzPgNg
          Enumerated_Domain_Value_Definition: Paleozoic to Neogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mz
          Enumerated_Domain_Value_Definition: Mesozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPg
          Enumerated_Domain_Value_Definition: Mesozoic to Paleogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPgNg
          Enumerated_Domain_Value_Definition: Mesozoic to Neogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MzCz
          Enumerated_Domain_Value_Definition: Mesozoic to Cenozoic reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pg
          Enumerated_Domain_Value_Definition: Paleogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PgNg
          Enumerated_Domain_Value_Definition: Paleogene to Neogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Ng
          Enumerated_Domain_Value_Definition: Neogene reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Rrlith
      Attribute_Definition:
        Dominant reservoir rock lithology, primarily distinguishing
        siliciclastics from carbonates. An "other" class is included
        to describe such reservoir situations as fractured basement
        or volcanics.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: ss
          Enumerated_Domain_Value_Definition: Siliciclastic reservoir lithology, primarily sandstones.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: LS
          Enumerated_Domain_Value_Definition: Limestone and other carbonate reservoir rock lithology.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: ssLS
          Enumerated_Domain_Value_Definition:
            Mixed siliciclastic and carbonate reservoir rock lithology,
            including both equal and subequal proportions significant
            to the assessment unit. There is no indication of which
            lithology is greater.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Ot
          Enumerated_Domain_Value_Definition:
            Other lithology that is neither siliciclastic nor carbonate,
            such as fractured basement or volcanics.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Rrenvt
      Attribute_Definition:
        Major reservoir rock depositional environment.
        Values are a continuum from continental (C) through
        paralic (P) through shallow marine (S) through deep
        marine (D) environments. Hybrids or multiples
        characterize some Assessment Units, there is not
        necessarily any significance in the order of the
        elements of these compound values.
        Assessment units that were not assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: C
          Enumerated_Domain_Value_Definition: Continental deposition of reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CP
          Enumerated_Domain_Value_Definition:
            Continental to paralic deposition of reservoir rock
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CPS
          Enumerated_Domain_Value_Definition:
            Continental and paralic and shallow marine
            deposition of reservoir rock, not necessarily
            in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CPSD
          Enumerated_Domain_Value_Definition:
            Continental and paralic and shallow marine and
            deep marine deposition of reservoir rock, not
            necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CS
          Enumerated_Domain_Value_Definition:
            Continental and shallow marine deposition of
            reservoir rock, not necessarily in that order
            of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: P
          Enumerated_Domain_Value_Definition: Paralic deposition of reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PS
          Enumerated_Domain_Value_Definition:
            Paralic to shallow marine deposition of
            reservoir rock, not necessarily in that
            order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PSD
          Enumerated_Domain_Value_Definition:
            Paralic and shallow marine and deep marine
            deposition of reservoir rock, not necessarily
            in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: S
          Enumerated_Domain_Value_Definition: Shallow marine deposition of reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: SD
          Enumerated_Domain_Value_Definition:
            Shallow marine to deep marine deposition of
            reservoir rock, not necessarily in that order
            of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: D
          Enumerated_Domain_Value_Definition: Deep marine deposition of reservoir rock.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Trap
      Attribute_Definition:
        Major trap type, limited to two of six trap categories-
        compressional structures (C), extensional structures (E),
        non-tectonic structures (N) (such as drapes and diapirs),
        paleogeomorphic (P) (reefs, erosional relief etc.), stratigraphic (S), and
        generalized hybrid structural-stratigraphic (ss).
        Compound elements are combined in alphabetic order without
        reference to order of importance. Assessment Units that were
        not assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: C
          Enumerated_Domain_Value_Definition: Compressional structure type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CE
          Enumerated_Domain_Value_Definition:
            Compressional and extensional structure type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CN
          Enumerated_Domain_Value_Definition:
            Compressional and non-tectonic structure type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CP
          Enumerated_Domain_Value_Definition:
            Compressional structure and paleogeomorphic type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CS
          Enumerated_Domain_Value_Definition:
            Compressional structure and stratigraphic type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: E
          Enumerated_Domain_Value_Definition: Extensional structure type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: EN
          Enumerated_Domain_Value_Definition:
            Extensional and non-tectonic structure type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: EP
          Enumerated_Domain_Value_Definition:
            Extensional structure and paleogeomorphic type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: ES
          Enumerated_Domain_Value_Definition:
            Extensional structure and stratigraphic type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: N
          Enumerated_Domain_Value_Definition: Non-tectonic structure type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: NP
          Enumerated_Domain_Value_Definition:
            Non-tectonic structure and paleogeomorphic type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: NS
          Enumerated_Domain_Value_Definition:
            Non-tectonic structure and stratigraphic type traps,
            not necessarily in that order of importance.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: P
          Enumerated_Domain_Value_Definition: Paleogeomorphic type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: S
          Enumerated_Domain_Value_Definition: Stratigraphic type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: ss
          Enumerated_Domain_Value_Definition: Generalized hybrid structural-stratigraphic type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: CPS
          Enumerated_Domain_Value_Definition: Compressional structure and paleogeomorphic and general stratigraphic type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: ENS
          Enumerated_Domain_Value_Definition: Extensional structure and non-tectonic structure and general stratigraphic type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: EPS
          Enumerated_Domain_Value_Definition: Extensional structure and paleogeomorphic and general stratigraphic type traps.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Seal
      Attribute_Definition:
        Major seal lithology. Shale seals are differentiated
        from salt and evaporite seals.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: sh
          Enumerated_Domain_Value_Definition: Shale major seal lithology.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: salt
          Enumerated_Domain_Value_Definition: Salt and evaporites major seal lithology.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: sh salt
          Enumerated_Domain_Value_Definition:
            Mixed shale and salt and evaporite major seal lithology,
            including both equal and subequal proportions.
            Order does not indicate which is greater.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Migr
      Attribute_Definition:
        Migration path magnitude. Assessment Units are
        differentiated between those with a distal (greater
        than approximately 20 miles) component of
        hydrocarbon migration and those without. Unassessed
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: P
          Enumerated_Domain_Value_Definition:
            Proximal lateral and vertical hydrocarbon migration,
            no scenario with lateral migration greater than approximately 20 miles
            to charge reservoirs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PD
          Enumerated_Domain_Value_Definition:
            Distal lateral migration (greater than approximately 20 miles)
            scenario is probably necessary.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Matn
      Attribute_Definition:
        Peak maturation time.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Pz
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Paleozoic time or earlier.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pz+Mz
          Enumerated_Domain_Value_Definition:
            Peak source rock maturation occurred in two or more episodes during
            the Paleozoic and Mesozoic epochs.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PzMz
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Paleozoic to Mesozoic time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mz
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Mesozoic time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPg
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Mesozoic to Paleogene time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: MzPgNg
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Mesozoic to Neogene time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Mz-Ng
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Mesozoic through Neogene time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pg
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Paleogene time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: PgNg
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Paleogene to Neogene time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Ng
          Enumerated_Domain_Value_Definition: Peak source rock maturation occurred during Neogene time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Ng+Not
          Enumerated_Domain_Value_Definition:
            Peak source rock maturation occurred during Neogene time
            and some source rock is immature.
            (Possibly the source of biogenic gas.)
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Not Mature
          Enumerated_Domain_Value_Definition: Source rock is immature. (Possibly the source of biogenic gas.)
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Exp_stat
      Attribute_Definition:
        Exploration status based on the number of fields.
        Assessment units that have not been assessed have no value.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: F
          Enumerated_Domain_Value_Definition:
            Frontier status. Between one and 13 oil or gas fields
            present in the assessment unit.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: E
          Enumerated_Domain_Value_Definition:
            Established status. More than 13 oil or gas fields
            present in the assessment unit.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: H
          Enumerated_Domain_Value_Definition:
            Hypothetical status. No oil or gas fields present in
            the assessment unit.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey

  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: au_geo.pat
      Entity_Type_Definition: Polygon Attribute Table
      Entity_Type_Definition_Source: Software generated
    Attribute:
      Attribute_Label: Area
      Attribute_Definition: Area of polygon
      Attribute_Definition_Source: Software computed
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 11245.50000
          Range_Domain_Maximum: 1635854258130.40360
    Attribute:
      Attribute_Label: Perimeter
      Attribute_Definition: Perimeter of polygon
      Attribute_Definition_Source: Software computed
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2730.01136
          Range_Domain_Maximum: 7713823.17784
    Attribute:
      Attribute_Label: Asm_geo#
      Attribute_Definition: Internal feature number
      Attribute_Definition_Source: Software computed
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2
          Range_Domain_Maximum: 759
    Attribute:
      Attribute_Label: Asm_geo-id
      Attribute_Definition: Feature identification number
      Attribute_Definition_Source: User Defined
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 10138
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address:
          Box 25286
          Building 810
          Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225
        Country: U.S.A.
      Contact_Voice_Telephone:
        1-888-ASK-USGS
        1-888-275-8747
  Resource_Description:
    Digital Data Series DDS-60
    World Petroleum Assessment 2000

  Distribution_Liability:
    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 data
    has been used by the U.S. Geological Survey (USGS), no warranty, expressed,
    or implied, is made by the USGS as to the accuracy of the data and related
    materials.  The act of distribution shall not constitute any such warranty,
    and no responsibility is assumed by the USGS in the use of these data,
    software, or related materials.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARCE Arc/Info export format (ASCII - No compression)
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: ISO 9660 with HSF extensions
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: <URL:http://energy.cr.usgs.gov>
    Fees:
      $32.00 for CD-ROM
      No cost to download digital files
Metadata_Reference_Information:
  Metadata_Date: 20000313
  Metadata_Review_Date: 20000400
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: David A. Ferderer
      Contact_Position: Database manager, Central Energy Resources Team
      Contact_Address:
        Address_Type: mailing and physical address
        Address:
          U.S. Geological Survey, MS 939
          Box 25046
          Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: U.S.A.
      Contact_Voice_Telephone: (303) 236-3611
      Contact_Facsimile_Telephone: (303) 236-8822
      Contact_Electronic_Mail_Address: dferdere@usgs.gov
      Hours_of_Service: 8 am. to 4 pm. U.S. Mountain Time Zone
  Metadata_Standard_Name: FGDC CSDGM
  Metadata_Standard_Version: FGDC-STD-001-1998