Identification_Information:
  Citation:
    Citation_Information:
      Originator: John C. Reed, Jr.
      Originator: Charles A. Bush
      Publication_Date: 2001
      Title: Generalized Geologic Map of the Conterminous United States
      Edition: 1.0
      Geospatial_Data_Presentation_Form: map
      Publication_Information:
        Publication_Place: Denver, CO
        Publisher: U.S. Geological Survey
      Online_Linkage: <http://geology.cr.usgs.gov/pub/National-Atlas/>
  Description:
    Abstract:
      This data set contains boundaries and tags for major geologic units in the 
      conterminous United States.  In addition to the polygons representing the 
      areal extent of geologic units, it identifies boundaries of metamorphic
      provinces, major faults, calderas, impact structures, and the limits of
      continental glaciation.  The data depict the geology of the bedrock that
      lies at or near the land surface, but not the distribution of surficial
      materials such as soils, alluvium, and glacial deposits.

      The data are generalized from a compilation prepared for use in the 
      Geologic Map of North America, to be published in hard copy by the 
      Geological Society of America and released as a digital file by the U.S.
      Geological Survey.
    Purpose:
      These data have been prepared with a degree of detail appropriate for 
      viewing at a scale of 1:7,500,000.  Because of the degree of
      generalization required (generalization based on compilation scale), the 
      data are intended primarily for display and for regional and national
      analysis, rather than for more detailed analysis in specific areas.

      No responsibility is assumed by the U.S. Geological Survey in the use of 
      these data.
     
    Supplemental_Information:
      The data set for the Geologic Map of the Conterminous United States 
      consists of 9 data layers.  The data layers for faults and glacial limit 
      lines are included in two different versions.  The data are available as 
      shapefiles, SDTS files, or Arc/INFO Export files.  The data layers are 
      distributed and should be used together.  All the data layers were created 
      as ARC/INFO coverages and converted to other formats for distribution 
      purposes.  The following files are included:
      > Calderl075 - Outlines of major calderas and impact structures
      > Faultgl075 - Fault lines, with line decorations*
      > Faultl075 - Fault lines, without line decorations**
      > Geolgym075 - Geologic units, as polygons
      > Geotxtl075 - Graphic representation of geologic unit text*
      > Glacagl075 - Glacial limit lines, with line decorations*
      > Glacal075 - Glacial limit lines, without line decorations**
      > Impactx075 - Impact structure locations, as points
      > Metfacp075 - Areas and facies types of metamorphism, as polygons
      >
      >* these files are not 'true' Arc/INFO coverages; they are graphic
      >  representations of symbols and text used on the geologic map.   These 
      >  files should be used to produce appropriately symbolized graphics.
      >  The decorations and text only appear correctly in Lambert Azimuthal
      >  Equal Area projection.
      >
      >** these files are the same as the files marked with * but do not
      >   include the line decorations.  They are the 'true' fault and glacial
      >   limit line Arc/INFO coverages.  These files should be used for data 
      >   analysis.

      Any use of trade, product, or firm names is for descriptive purposes only 
      and does not imply endorsement by the U.S. Government

      Although this Federal Geographic Data Committee-compliant metadata
      file is intended to document the data set in nonproprietary form, some
      Arc/INFO-specific terminology is included for clarity and expediency.

  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 19980301
        Ending_Date: 19990601
    Currentness_Reference: Compilation date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -124.73301687
      East_Bounding_Coordinate: -66.95458457
      North_Bounding_Coordinate: 50.00006074
      South_Bounding_Coordinate: 24.51789429
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: 
        American Geological Institute (AGI) Glossary of Geology
      Theme_Keyword: Bedrock
      Theme_Keyword: Faults
      Theme_Keyword: Geologic History
      Theme_Keyword: Geologic Map
      Theme_Keyword: Geology
      Theme_Keyword: Glacial Limits
      Theme_Keyword: Impact Structures
      Theme_Keyword: Metamorphic Rocks
      Theme_Keyword: Plutonic Rocks
      Theme_Keyword: Regional Geology
      Theme_Keyword: Sedimentary Rocks
      Theme_Keyword: Tectonic History
      Theme_Keyword: Tectonics
      Theme_Keyword: Volcanic Rocks
      Theme_Keyword: Volcanoes
    Place:
      Place_Keyword_Thesaurus: U.S. Board on Geographic Names (BGN)
      Place_Keyword: Conterminous United States
      Place_Keyword: United States
      Place_Keyword: USA
      Place_Keyword: Alabama
      Place_Keyword: Arizona
      Place_Keyword: Arkansas
      Place_Keyword: California
      Place_Keyword: Colorado
      Place_Keyword: Connecticut
      Place_Keyword: Delaware
      Place_Keyword: District of Columbia
      Place_Keyword: Florida
      Place_Keyword: Georgia
      Place_Keyword: Idaho
      Place_Keyword: Illinois
      Place_Keyword: Indiana
      Place_Keyword: Iowa
      Place_Keyword: Kansas
      Place_Keyword: Kentucky
      Place_Keyword: Louisiana
      Place_Keyword: Maine
      Place_Keyword: Maryland
      Place_Keyword: Massachusetts
      Place_Keyword: Michigan
      Place_Keyword: Minnesota
      Place_Keyword: Mississippi
      Place_Keyword: Missouri
      Place_Keyword: Montana
      Place_Keyword: Nebraska
      Place_Keyword: Nevada
      Place_Keyword: New Hampshire
      Place_Keyword: New Jersey
      Place_Keyword: New Mexico
      Place_Keyword: New York
      Place_Keyword: North Carolina
      Place_Keyword: North Dakota
      Place_Keyword: Ohio
      Place_Keyword: Oklahoma
      Place_Keyword: Oregon
      Place_Keyword: Pennsylvania
      Place_Keyword: Rhode Island
      Place_Keyword: South Carolina
      Place_Keyword: South Dakota
      Place_Keyword: Tennessee
      Place_Keyword: Texas
      Place_Keyword: Utah
      Place_Keyword: Vermont
      Place_Keyword: Virginia
      Place_Keyword: Washington
      Place_Keyword: West Virginia
      Place_Keyword: Wisconsin
      Place_Keyword: Wyoming
  Access_Constraints: None
  Use_Constraints:
    None.  Acknowledgment of the National Atlas of the United States of America 
    and (or) the U.S. Geological Survey would be appreciated in products derived 
    from these data.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: John C. Reed, Jr.
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: Mailing
        Address: Mail Stop 913, Box 25046
        City: Lakewood
        State_or_Province: CO
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: 303-236-1276
      Contact_Facsimile_Telephone: 303-236-0214
      Contact_Electronic_Mail_Address: jreed@usgs.gov
  Browse_Graphic:
    Browse_Graphic_File_Name: 
      <http://geology.cr.usgs.gov/pub/National-Atlas/usgeo.pdf>
    Browse_Graphic_File_Description: An image of the map
    Browse_Graphic_File_Type: PDF
  Browse_Graphic:
    Browse_Graphic_File_Name:
      <http://geology.cr.usgs.gov/pub/National-Atlas/usgeoexp.pdf>
    Browse_Graphic_File_Description: An image of the map explanation
    Browse_Graphic_File_Type: PDF
  Data_Set_Credit:
    Nancy Shock, Digital Cartographer, U.S. Geological Survey, assisted
    in the digital compilation of this map.
  Native_Data_Set_Environment:
    SunOS, 5.6, sun4m UNIX
    ArcNFO version 7.1.2

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      The line attributes were manually checked by assigning unique line
      types to the values and then plotting the data.  The plots were
      then compared to the source.

      The polygon attributes were checked by visually comparing the final
      colored plots to maps at various larger scales.
  Logical_Consistency_Report:
    Polygon and node topology are present.  All polygons are labeled and were 
    tested by using the Arc/INFO command LABELERRORS.  All polygons were checked 
    for closure, node errors, overshoots, undershoots, dangles and intersections 
    using Arc/INFO routines. The Arc/INFO commands BUILD and CLEAN were run to
    ensure the topological consistency of the data set.
  Completeness_Report:
    This data set contains map unit boundaries and codes for the 48
    conterminous States.  Boundaries and codes are included for geologic
    units, metamorphic facies, limits of glacial advance, impact structures,
    caldera boundaries, and major faults.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        The accuracy of the original data was checked by comparing the digital 
        files to several data sources.  Both the line work and the polygon 
        labels were checked against the source compilation.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Bally, A.W. (ed.)
          Originator: Palmer, A.R. (ed.)
          Publication_Date: 1989
          Title: The Geology of North America; an Overview
          Series_Information:
            Series_Name: The Geology of North America
            Issue_Identification: v. A, 619 p.
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1989
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: DNAG-A
      Source_Contribution: Line work and attributes.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Buchfiel, B.C. (ed.)
          Originator: Lipman, P.W. (ed.)
          Originator: Zoback, M.L. (ed.)
          Publication_Date: 1992
          Title: The Cordilleran Orogen, Conterminous U.S.
          Series_Information:
            Series_Name: The Geology of North America
            Issue_Identification: v. G-3, 724 p.
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Source_Scale_Denominator: 5,000,000
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1992
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: DNAG-G
      Source_Contribution: Line work and attributes.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Hatcher, R.D. (ed.)
          Originator: Viele, G.W. (ed.)
          Originator: Thomas, W.A., (ed.)
          Publication_Date: 1989
          Title: Appalachian-Ouachita Orogen in the United States
          Series_Information:
            Series_Name: The Geology of North America
            Issue_Identification: v. F-2, 767 p.
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Source_Scale_Denominator: 5,000,000
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1989
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: DNAG-F
      Source_Contribution: Line work and attributes.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: King, P.B.
          Originator: Beikman H.M.
          Publication_Date: 1974
          Title:
            Geologic map of the United States (exclusive of Alaska and Hawaii)
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Reston, Virginia
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 2,500,000
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1974
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: GMUS
      Source_Contribution: Line work and attributes.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Reed, J.C., Jr. (ed.)
          Originator: Bickford, M.E. (ed.)
          Originator: Houston, R.S. (ed.)
          Originator: Link, P.K. (ed.)
          Originator: Rankin, D.W. (ed.)
          Originator: Sims, P.K. (ed.)
          Originator: Van Schmus, W.R. (ed.)
          Publication_Date: 1993
          Title: Precambrian: Conterminous U.S.
          Series_Information:
            Series_Name: The Geology of North America
            Issue_Identification: v. C-2, 657 p.
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Source_Scale_Denominator: 5,000,000
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1993
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: DNAG-C
      Source_Contribution: Line work and attributes.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Salvador, A., ed
          Publication_Date: 1991
          Title: The Gulf of Mexico Basin
          Series_Information:
            Series_Name: The Geology of North America
            Issue_Identification: v. J, 568 p.
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1991
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: DNAG-J
      Source_Contribution: Line work and attributes.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Sheridan, R.E. (ed.)
          Originator: Grow, J.A. (ed.)
          Publication_Date: 1988
          Title: The Atlantic Continental Margin, U.S.
          Series_Information:
            Series_Name: The Geology of North America
            Issue_Identification: v. I-2, 632 p.
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1988
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: DNAG-I
      Source_Contribution: Line work and attributes.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Silver, L.T. (ed.)
          Originator: Schultz, P.H. (ed.)
          Publication_Date: 1982
          Title:
            Geological Implications of Impacts of Large Asteroids and Comets on
            the Earth: Geological Society of America Special Paper 190, 528 p.
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1982
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: SP190
      Source_Contribution: Impact structures
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Sloss, L.L. (ed.)
          Publication_Date: 1988
          Title: Sedimentary Cover, North American Craton, U.S
          Series_Information:
            Series_Name: The Geology of North America
            Issue_Identification: v. D-2, 506 p.
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Boulder, Colorado
            Publisher: Geological Society of America
      Type_of_Source_Media: Paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1988
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: DNAG-D
      Source_Contribution: Line work and attributes.
    Process_Step:
      Process_Description:
        The geologic unit polygons (geolgym075), faults (faultl075), glacial
        limit lines (glacal075), boundaries of metamorphic provinces 
        (metfacp075), calderas (calderl075), and impact structures (impactx075) 
        were created using the following procedures:

        Data were compiled on scale-stable clear film at various scales.  The 
        lines and points were then digitized and georeferenced using the 
        computer program GSMCAD, written by Van S. Williams, USGS. The program 
        is available at no charge at
        <http://geology.cr.usgs.gov/maps/software.html>.  Polygons, lines, and 
        point features were attributed in GSMCAD.
      Source_Used_Citation_Abbreviation: DNAG-A
      Source_Used_Citation_Abbreviation: DNAG-G
      Source_Used_Citation_Abbreviation: DNAG-F
      Source_Used_Citation_Abbreviation: GMUS
      Source_Used_Citation_Abbreviation: DNAG-C
      Source_Used_Citation_Abbreviation: DNAG-J
      Source_Used_Citation_Abbreviation: DNAG-I
      Source_Used_Citation_Abbreviation: SP190
      Source_Used_Citation_Abbreviation: DNAG-D
      Process_Date: 1999
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: John C. Reed, Jr.
            Contact_Organization: U.S. Geological Survey
          Contact_Address:
            Address_Type: Mailing
            Address: Mail Stop 913, Box 25046, Federal Center
            City: Lakewood
            State_or_Province: CO
            Postal_Code: 80225
            Country: USA
          Contact_Voice_Telephone: 303-236-1276
          Contact_Facsimile_Telephone: 303-236-0214
          Contact_Electronic_Mail_Address: jreed@usgs.gov

    Process_Step:
      Process_Description:
        The data were exported from GSMCAD into Arc/INFO Generate
        format, and were imported into Arc/INFO coverages using AML
        routines provided with GSMCAD.
      Process_Date: 1999
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: John C. Reed, Jr.
            Contact_Organization: U.S. Geological Survey
          Contact_Address:
            Address_Type: Mailing
            Address: Mail Stop 913, Box 25046, Federal Center
            City: Lakewood
            State_or_Province: CO
            Postal_Code: 80225
            Country: USA
          Contact_Voice_Telephone: 303-236-1276
          Contact_Facsimile_Telephone: 303-236-0214
          Contact_Electronic_Mail_Address: jreed@usgs.gov

    Process_Step:
      Process_Description:
        Errors in polygon labeling were checked using the LABELERROR
        routine in ARCPLOT.  Node errors were checked using ARCEDIT
        routines.  Colored plots were made to make final checks of the
        overall coverages.
      Process_Date: 1999
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Charles A. Bush
            Contact_Organization: U.S. Geological Survey
          Contact_Address:
            Address_Type: Mailing
            Address: Mail Stop 913, Box 25046, Federal Center
            City: Lakewood
            State_or_Province: CO
            Postal_Code: 80225
            Country: USA
          Contact_Voice_Telephone: 303-236-4723
          Contact_Facsimile_Telephone: 303-236-0214
          Contact_Electronic_Mail_Address: cbush@usgs.gov

    Process_Step:
      Process_Description:
        Supplementary graphical coverages were created for the faults
        (faultgl075) and glacial limit lines (glacagl075).  These are the same 
        as faultl075 and glacal075 except decoration lines have been added for 
        display purposes.  Another coverage was created containing arcs that 
        represent text labels for the polygons (geotxtl075).  This is also for 
        display purposes.
      Process_Date: 1999
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Charles A. Bush
            Contact_Organization: U.S. Geological Survey
          Contact_Address:
            Address_Type: Mailing
            Address: Mail Stop 913, Box 25046, Federal Center
            City: Lakewood
            State_or_Province: CO
            Postal_Code: 80225
            Country: USA
          Contact_Voice_Telephone: 303-236-4723
          Contact_Facsimile_Telephone: 303-236-0214
          Contact_Electronic_Mail_Address: cbush@usgs.gov

Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: Point
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: String
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.0000094433083
      Longitude_Resolution: 0.0000094433083
      Geographic_Coordinate_Units: Decimal degrees
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: GRS1980
      Semi-major_Axis: 6378137.0
      Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type: 
      Entity_Type_Label: 
        Fault, with line decorations (described by faultgl075.aat or 
        faultgl075.dbf)
      Entity_Type_Definition:
        A fault is a fracture or fracture zone in the Earth's crust along which
        one side moves with respect to the other.  This data set includes both
        the faults and the line decorations.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polyline
          Enumerated_Domain_Value_Definition: 
            1-dimensional element that may or may not surround a 2-dimensional 
            element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Fnode#
      Attribute_Definition: Internal sequence number of the from-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2
          Range_Domain_Maximum: 50400
    Attribute:
      Attribute_Label: Tnode#
      Attribute_Definition: Internal sequence number of the to-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 50401
    Attribute:
      Attribute_Label: Lpoly#
      Attribute_Definition: Internal sequence number of the left polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values: 
        Range_Domain:
          Range_Domain_Minimum: -1
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Rpoly#
      Attribute_Definition: Internal sequence number of the right polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: -1
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Length
      Attribute_Definition: The length of the line in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 150.188
          Range_Domain_Maximum: 430125.406
    Attribute: 
      Attribute_Label: Faultgl075# or Faultgl#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 69825
    Attribute:
      Attribute_Label: Faultgl075-id or Faultgl-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 4
          Range_Domain_Maximum: 71912
    Attribute: 
      Attribute_Label: Code
      Attribute_Definition: The type of fault represented in the data set.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 12
          Enumerated_Domain_Value_Definition: Fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 13
          Enumerated_Domain_Value_Definition: Thrust fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 14
          Enumerated_Domain_Value_Definition: Normal fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 16
          Enumerated_Domain_Value_Definition: Low angle detachment fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 17
          Enumerated_Domain_Value_Definition: Inferred fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Text
      Attribute_Definition: The type of fault.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Fault
          Enumerated_Domain_Value_Definition: 
            A fault is a fracture or fracture zone in the Earth's crust along 
            which one side moves with respect to the other.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Thrust fault
          Enumerated_Domain_Value_Definition: 
            A thrust fault is a gently inclined fault (less than 45 degrees)
            along which the principal movement has been more nearly horizontal 
            than vertical.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Normal fault
          Enumerated_Domain_Value_Definition: 
            A normal fault is a steeply inclined fault (more than 45 degrees)
            where rocks above the fault have moved down relative to those 
            below the fault.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Low angle detachment fault
          Enumerated_Domain_Value_Definition: 
            A large, shallowly-inclined normal fault formed during extension of 
            the Earth's crust.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Inferred fault
          Enumerated_Domain_Value_Definition: 
            A fault that is assumed to be at the specified location. 
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey

  Detailed_Description:
    Entity_Type: 
      Entity_Type_Label: 
        Fault, without line decorations (described by faultl075.aat or
        Faultl075.dbf)
      Entity_Type_Definition:
        A fault is a fracture or fracture zone in the Earth's crust along which 
        one side moves with respect to the other.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polyline
          Enumerated_Domain_Value_Definition: 
            1-dimensional element that may or may not surround a 2-dimensional 
            element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Fnode#
      Attribute_Definition: Internal sequence number of the from-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 1
    Attribute:
      Attribute_Label: Tnode#
      Attribute_Definition: Internal sequence number of the to-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 4
    Attribute:
      Attribute_Label: Lpoly#
      Attribute_Definition: Internal sequence number of the left polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values: 
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Rpoly#
      Attribute_Definition: Internal sequence number of the right polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Length
      Attribute_Definition: The length of the line in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2337.81227
          Range_Domain_Maximum: 583196.36613
    Attribute: 
      Attribute_Label: Faultl075# or Faultl#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 1259
    Attribute:
      Attribute_Label: Faultl075-id or Faultl-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 83
          Range_Domain_Maximum: 1603
    Attribute: 
      Attribute_Label: Code
      Attribute_Definition: The type of fault represented in the data set.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 12
          Enumerated_Domain_Value_Definition: Fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 13
          Enumerated_Domain_Value_Definition: Thrust fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 14
          Enumerated_Domain_Value_Definition: Normal fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 16
          Enumerated_Domain_Value_Definition: Low angle detachment fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 17
          Enumerated_Domain_Value_Definition: Inferred fault
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Text
      Attribute_Definition: The type of fault.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Fault
          Enumerated_Domain_Value_Definition: 
            A fault is a fracture or fracture zone in the earth's crust along 
            which one side moves with respect to the other.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Thrust fault
          Enumerated_Domain_Value_Definition: 
            A thrust fault is a gently inclined fault (less then 45 degrees)
            along which the principal movement has been more nearly horizontal 
            than vertical.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Normal fault
          Enumerated_Domain_Value_Definition: 
            A normal fault is a steeply inclined fault (more than 45 degrees)
            where rocks above the fault have moved down relative to those 
            below the fault.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Low angle detachment fault
          Enumerated_Domain_Value_Definition: 
            A large, shallowly-inclined normal fault formed during extension of 
            the Earth's crust.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Inferred fault
          Enumerated_Domain_Value_Definition: 
            A fault that is assumed to be at the specified location.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey

  Detailed_Description:
    Entity_Type: 
      Entity_Type_Label: 
        Glacial limit line, with line decorations (described by glacagl075.aat 
        or glacagl075.dbf)
      Entity_Type_Definition:
        A line showing the southern limit of Late Wisconsin and pre-Late
        Wisconsin glaciation in the United States.  For display purposes, tics
        are included along the line for line decorations.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polyline
          Enumerated_Domain_Value_Definition: 
            1-dimensional element that may or may not surround a
            2-dimensional element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Fnode#
      Attribute_Definition: Internal sequence number of the from-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 2140
    Attribute:
      Attribute_Label: Tnode#
      Attribute_Definition: Internal sequence number of the to-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 2141
    Attribute:
      Attribute_Label: Lpoly#
      Attribute_Definition: Internal sequence number of the left polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values: 
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Rpoly#
      Attribute_Definition: Internal sequence number of the right polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Length
      Attribute_Definition: The length of the line in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 8.990
          Range_Domain_Maximum: 1291295.750
    Attribute: 
      Attribute_Label: Glacagl075# or Glacagl#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 1098
    Attribute:
      Attribute_Label: Glacagl075-id or Glacagl-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 1074
    Attribute: 
      Attribute_Label: Code
      Attribute_Definition: 
        Values representing the limits of glacial advance at two selected times.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Wisconsin glacial limit.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: Pre-Wisconsin glacial limit.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Glacial_limit
      Attribute_Definition: The type of glacial limit line.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Wisconsin Glacial Limit Line
          Enumerated_Domain_Value_Definition: 
            A line showing the maximum extent of glaciation at late Wisconsin 
            time (35,000 to 11,150 years ago).
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pre-Wisconsin Glacial Limit Line
          Enumerated_Domain_Value_Definition: 
            A line showing the maximum extent of glaciation prior to Late 
            Wisconsin time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey

  Detailed_Description:
    Entity_Type: 
      Entity_Type_Label: 
        Glacial limit line, without line decorations (described by
        glacal075.aat or glacal075.dbf)
      Entity_Type_Definition:
        A line showing the southern limit of Late Wisconsin and pre-Late
        Wisconsin glaciation in the United States.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polyline
          Enumerated_Domain_Value_Definition: 
            1-dimensional element that may or may not surround a
            2-dimensional element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Fnode#
      Attribute_Definition: Internal sequence number of the from-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Tnode#
      Attribute_Definition: Internal sequence number of the to-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Lpoly#
      Attribute_Definition: Internal sequence number of the left polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values: 
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Rpoly#
      Attribute_Definition: Internal sequence number of the right polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Length
      Attribute_Definition: The length of the line in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 5125.622
          Range_Domain_Maximum: 1291295.861
    Attribute: 
      Attribute_Label: Glacal075 or Glacal#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 91
    Attribute:
      Attribute_Label: Glacal075-id or Glacal-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 91
    Attribute: 
      Attribute_Label: Code
      Attribute_Definition: 
        Values representing the limits of glacial advance at two selected times.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Wisconsin glacial limit.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: Pre-Wisconsin glacial limit.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Glacial_limit
      Attribute_Definition: The type of glacial limit line.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Wisconsin Glacial Limit Line
          Enumerated_Domain_Value_Definition: 
            A line showing the maximum extent of glaciation at late Wisconsin 
            time (35,000 to 11,150 years ago).
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Pre-Wisconsin Glacial Limit Line
          Enumerated_Domain_Value_Definition: 
            A line showing the maximum extent of glaciation prior to Late 
            Wisconsin time.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey

  Detailed_Description:
    Entity_Type: 
      Entity_Type_Label: 
        Text labels (described by geotxtl075.aat or geotxtl075.dbf)
      Entity_Type_Definition:
        Text labels for the geology coverage, represented as lines.  Standard 
        geologic symbols are included.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polyline
          Enumerated_Domain_Value_Definition: 
            1-dimensional element that may or may not surround a
            2-dimensional element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Fnode#
      Attribute_Definition: Internal sequence number of the from-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 131
    Attribute:
      Attribute_Label: Tnode#
      Attribute_Definition: Internal sequence number of the to-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 132
    Attribute:
      Attribute_Label: Lpoly#
      Attribute_Definition: Internal sequence number of the left polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values: 
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Rpoly#
      Attribute_Definition: Internal sequence number of the right polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Length
      Attribute_Definition: The length of the line in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2373.982
          Range_Domain_Maximum: 117346.711
    Attribute: 
      Attribute_Label: Geotxtl075# or Geotxtl#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 1206
    Attribute:
      Attribute_Label: Geotxtl075-id or Geotxtl-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 1105

  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: 
        Areas of amphibolite or blueschist facies metamorphism (described by 
        metfacp075.pat or metfacp075.dbf).
      Entity_Type_Definition: 
        Metamorphism is the alteration of texture or composition in a rock by 
        pressure, heat, or water.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polygon
          Enumerated_Domain_Value_Definition: 2-dimensional element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Area
      Attribute_Definition: The size of the shape in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 21692.355
          Range_Domain_Maximum: 153870630912
    Attribute:
      Attribute_Label: Perimeter
      Attribute_Definition: The perimeter of the shape in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
       Range_Domain:
          Range_Domain_Minimum: 1355.694
          Range_Domain_Maximum: 5494734.500
    Attribute:
      Attribute_Label: Metfacp075# or Metfacp#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2
          Range_Domain_Maximum: 123
    Attribute:
      Attribute_Label: Metfacp075-id or Metfacp-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 122
    Attribute:
      Attribute_Label: Metam-fac
      Attribute_Definition: The type of facies metamorphism.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: <blank>
          Enumerated_Domain_Value_Definition: 
            An area where metamorphism is not mapped.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Amphibolite Facies Metamorphism
          Enumerated_Domain_Value_Definition: 
            A metamorphic mineral assemblage formed under medium temperature and 
            medium to high pressure.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Blueschist Facies Metamorphism
          Enumerated_Domain_Value_Definition: 
            A metamorphic mineral assemblage formed under low temperature and 
            high pressure.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey

  Detailed_Description:
    Entity_Type: 
      Entity_Type_Label: 
        Calderas and impact structures (described by calderl075.aat or 
        calderl075.dbf)
      Entity_Type_Definition: 
        Outlines of major calderas and impact structures.  A caldera is a large,
        generally circular depression at the summit of a volcano formed when
        magma is withdrawn or erupted from a shallow underground magma
        reservoir.  An impact structure is a crater formed by the impact of a
        meteoroid, asteroid, or comet with the Earth.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polyline
          Enumerated_Domain_Value_Definition: 
            1-dimensional element that may or may not surround a 2-dimensional 
            element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Fnode#
      Attribute_Definition: Internal sequence number of the from-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 47
    Attribute:
      Attribute_Label: Tnode#
      Attribute_Definition: Internal sequence number of the to-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 47
    Attribute:
      Attribute_Label: Lpoly#
      Attribute_Definition: Internal sequence number of the left polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values: 
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Rpoly#
      Attribute_Definition: Internal sequence number of the right polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 0
    Attribute:
      Attribute_Label: Length
      Attribute_Definition: The length of the line in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1600.429
          Range_Domain_Maximum: 302426.781
    Attribute: 
      Attribute_Label: Calderl075# or Calderl#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 63
    Attribute:
      Attribute_Label: Calderl075-id or Calderl-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 104
          Range_Domain_Maximum: 49926
    Attribute: 
      Attribute_Label: Code
      Attribute_Definition: 
        The type of caldera boundary or impact structure extent.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 17
          Enumerated_Domain_Value_Definition: Caldera Boundary
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 18
          Enumerated_Domain_Value_Definition: Caldera Boundary, uncertain
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 19
          Enumerated_Domain_Value_Definition: 
            Extent of large, buried impact structure.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Structure_type
      Attribute_Definition: The type of structure
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Caldera Boundary
          Enumerated_Domain_Value_Definition: 
            The areal extent of the caldera at the surface.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Caldera Boundary, uncertain
          Enumerated_Domain_Value_Definition: 
            The estimated areal extent of the caldera.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Extent of large, buried impact structure
          Enumerated_Domain_Value_Definition: 
            The estimated extent of the impact structure.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey

  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: 
        Impact site (described by impactx075.pat or impactx075.dbf)
      Entity_Type_Definition: 
        The center of an impact structure.  An impact structure is a crater 
        formed by the impact of a meteoroid, asteroid, or comet with the Earth.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Point
          Enumerated_Domain_Value_Definition: 0-dimensional element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Area
      Attribute_Definition: The size of the shape in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.000
          Range_Domain_Maximum: 0.000
    Attribute:
      Attribute_Label: Perimeter
      Attribute_Definition: The perimeter of the shape in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
       Range_Domain:
          Range_Domain_Minimum: 0.000
          Range_Domain_Maximum: 0.000
    Attribute:
      Attribute_Label: Impactx075# or Impactx#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 32
    Attribute:
      Attribute_Label: Impactx075-id or Impactx-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 47
          Range_Domain_Maximum: 78
    Attribute:
      Attribute_Label: Structure_types
      Attribute_Definition: Indicates whether site is impacted or suspected.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Impact Structure
          Enumerated_Domain_Value_Definition:
            A site where the structure has been positively determined to have 
            been created by the impact of a meteoroid, asteroid, or comet with 
            the Earth.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Suspected impact structure
          Enumerated_Domain_Value_Definition:
            A site where the structure may have been created by the impact of a 
            meteoroid, asteroid, or comet with the Earth.  Positive
            determination of the means of formation has not been made
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Id_num
      Attribute_Definition: 
        The identification number for the impact structure.  Suspected impact 
        structures have a value of 0.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 17
    Attribute:
      Attribute_Label: Name
      Attribute_Definition: The name or location of the impact site.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Unrepresentable_Domain: 
          There is no predefined set of impact structure names or locations.
    Attribute:
      Attribute_Label: Latitude
      Attribute_Definition: 
        The latitude at the center of the impact site, in degrees and 
        minutes.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 29(02'
          Range_Domain_Maximum: 47(36'
    Attribute:
      Attribute_Label: Longitude
      Attribute_Definition: 
        The longitude at the center of the impact site, in degrees and 
        minutes.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 72(50'
          Range_Domain_Maximum: 111(01'
    Attribute:
      Attribute_Label: Diameter_m
      Attribute_Definition: The diameter of the impact site in miles.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0.01
          Range_Domain_Maximum: 60.00
    Attribute:
      Attribute_Label: Age
      Attribute_Definition: 
        The age of the impact site in years.  (Ma indicates a million years.  
        For example, 100 Ma equals 100,000,000 years.)
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Unrepresentable_Domain: 
          There is no predefined set of ages.
    Attribute:
      Attribute_Label: Remarks
      Attribute_Definition: The basis of site identification.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Unrepresentable_Domain: There is no predefined set of remarks.

  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: 
        Geologic unit (described by geolgym075.pat or geolgyp075.dbf)
      Entity_Type_Definition: 
        Rock and material that lies at or near the land surface, but not 
        surficial materials such as soils, alluvium, and glacial deposits.  The 
        units are defined by sedimentary, volcanic, plutonic, or metamorphic 
        rock types and by their geologic age.  The Text attribute is included to 
        provide a method for generating the appropriate map symbols for display 
        and publication purposes.  
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polygon
          Enumerated_Domain_Value_Definition: 2-dimensional element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Area
      Attribute_Definition: The size of the shape in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 4070.129
          Range_Domain_Maximum: 566153969664
    Attribute:
      Attribute_Label: Perimeter
      Attribute_Definition: The perimeter of the shape in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
       Range_Domain:
          Range_Domain_Minimum: 540.234
          Range_Domain_Maximum: 19685880.000
    Attribute:
      Attribute_Label: Geolgyp075# or Geolgyp#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 2
          Range_Domain_Maximum: 2778
    Attribute:
      Attribute_Label: Geolgyp075-id or Geolgyp-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 3500
    Attribute:
      Attribute_Label: Geology
      Attribute_Definition: The standard geologic symbol for the rock type.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: (See table under Text)
          Enumerated_Domain_Value_Definition: (See table under Text)
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Mapunit_sy
      Attribute_Definition: A letter code representing the geology.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: (See table under Text)
          Enumerated_Domain_Value_Definition: (See table under Text)
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Text
      Attribute_Definition:
        The value recognized by the program GSMCAD and used to create the 
        special font for geologic symbols, e.g. %217 represents the geologic 
        symbol for mesozoic.  Because standard fonts available in ARC/INFO do 
        not have the special symbols used for geologic time periods, the symbols 
        were created in GSMCAD and exported as arcs.  
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: (See table below)
          Enumerated_Domain_Value_Definition: 
            The values for Text are listed below, along with the associated 
            values for the Mapunit_sy attribute and the values for the
            Geology attribute.
            >
            >MAPUNIT_SY  TEXT       GEOLOGY
            >-------------------------------------------------------------------
            >Q           Q          Quaternary deposits
            >nT          nT         Neogene sedimentary rocks
            >pgT         pgT        Paleogene sedimentary rocks
            >KT          KT         Cretaceous and Tertiary sedimentary rocks
            >Mz          %217       Mesozoic sedimentary rocks
            >lMz         l%217      Lower Mesozoic (Triassic and Jurassic)
            >                         sedimentary rocks
            >uPz         u%216      Upper Paleozoic (Pennsylvanian and
            >                         Permian) sedimentary rocks
            >PzMz        %216%217   Paleozoic and Mesozoic sedimentary rocks
            >mPz         m%216      Middle Paleozoic (Silurian, Devonian, and
            >                         Mississippian) sedimentary rocks
            >Pz          %216       Paleozoic sedimentary rocks
            >lPz         l%216      Lower Paleozoic (Cambrian and Ordovician)
            >                         sedimentary rocks
            >ZPz         Z%216      Upper Proterozoic and Lower Paleozoic
            >                         sedimentary rocks
            >Z           Z          Upper Proterozoic sedimentary rocks
            >Y           Y          Middle Proterozoic sedimentary rocks
            >P_          %215       Proterozoic sedimentary rocks
            >X           X          Lower Proterozoic sedimentary rocks
            >A           A          Archean sedimentary rocks
            >K           K          Cretaceous sedimentary rocks
            >Qv          Qv         Quaternary volcanic rocks
            >nTv         nTv        Neogene volcanic rocks
            >pgTv        pgTv       Paleogene volcanic rocks
            >Kv          Kv         Cretaceous volcanic rocks
            >Mzv         %217v      Mesozoic volcanic rocks
            >lMzv        l%217v     Lower Mesozoic (Triassic and Jurassic) 
            >                         volcanic rocks
            >PzMzv       %216%217v  Paleozoic and Mesozoic volcanic rocks
            >mPzv        m%216v     Middle Paleozoic volcanic rocks
            >lPzv        l%216v     Lower Paleozoic volcanic rocks
            >ZPzv        Z%216v     Upper Proterozoic and Lower
            >                         Paleozoic volcanic rocks
            >Zv          Zv         Upper Proterozoic volcanic rocks
            >Yv          Yv         Middle Proterozoic volcanic rocks
            >Xv          Xv         Lower Proterozoic volcanic rocks
            >pgTg        pgTg       Paleogene granitic rocks
            >pgTi        pgTi       Paleogene intermediate rocks
            >pgTm        pgTm       Paleogene mafic rocks
            >KTg         KTg        Cretaceous and Tertiary granitic rocks
            >Kg          Kg         Cretaceous granitic rocks
            >Mzg         %217g      Mesozoic granitic rocks
            >lMzg        l%217g     Early Mesozoic granitic rocks
            >lMzm        l%217m     Early Mesozoic mafic rocks
            >lMzu        l%217u     Early Mesozoic ultramafic rocks
            >uPzg        u%216g     Late Paleozoic granitic rocks
            >mPzg        m%216g     Middle Paleozoic granitic rocks
            >mPzm        m%216m     Middle Paleozoic mafic rocks
            >lPzg        l%216g     Early Paleozoic granitic rocks
            >ZPzg        Z%216g     Late Proterozoic and Early Paleozoic
            >                         granitic rocks
            >ZPzm        Z%216m     Late Proterozoic and Early Paleozoic
            >                         mafic rocks
            >P_g         %215g      Proterozoic granitic rocks
            >Yg          Yg         Middle Proterozoic granitic rocks
            >Ym          Ym         Middle Proterozoic mafic rocks
            >Ya          Ya         Middle Proterozoic anorthositic rocks
            >Xg          Xg         Early Proterozoic granitic rocks
            >Xm          Xm         Early Proterozoic mafic rocks
            >Ag          Ag         Archean granitic rocks
            >Zg          Zg         Late Proterozoic granitic rocks
            >n           n          Gneiss, age uncertain
            >ZPzn        Z%216n     Late Proterozoic and Early Paleozoic gneiss
            >Yn          Yn         Middle Proterozoic gneiss
            >Xn          Xn         Early Proterozoic gneiss
            >An          An         Archean gneiss
            >PzMzm       %216%217m  Paleozoic and Mesozoic mafic rocks
            >Tv          Tv         Tertiary volcanic rocks
            >nTg         nTg        Neogene granitic rocks
            >H2o         H2o        Water body
            >
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Geoshade
      Attribute_Definition: 
        The shade pattern number from the ARC/INFO shadeset geoshade.shd.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
       Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 231        
    Attribute:
      Attribute_Label: Red
      Attribute_Definition: Percentage values used to produce colors.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 255        
    Attribute:
      Attribute_Label: Green
      Attribute_Definition: Percentage values used to produce colors.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 255        
    Attribute:
      Attribute_Label: Blue
      Attribute_Definition: Percentage values used to produce colors.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 255        

  Detailed_Description:
    Entity_Type: 
      Entity_Type_Label: 
        Rock or geologic deposit boundary line (described by geolgym075.aat or 
        geolgyl075.dbf)
      Entity_Type_Definition: Line separating different geologic units.
      Entity_Type_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: The representation of the entity in the data.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Polyline
          Enumerated_Domain_Value_Definition: 
            1-dimensional element that may or may not surround a 2-dimensional 
            element.
          Enumerated_Domain_Value_Definition_Source: ESRI GIS software
    Attribute:
      Attribute_Label: Fnode#
      Attribute_Definition: Internal sequence number of the from-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 9432
    Attribute:
      Attribute_Label: Tnode#
      Attribute_Definition: Internal sequence number of the to-node.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 9432
    Attribute:
      Attribute_Label: Lpoly#
      Attribute_Definition: Internal sequence number of the left polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values: 
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 2778
    Attribute:
      Attribute_Label: Rpoly#
      Attribute_Definition: Internal sequence number of the right polygon.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 2768
    Attribute:
      Attribute_Label: Length
      Attribute_Definition: The length of the line in coverage units.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 4.762
          Range_Domain_Maximum: 1571543.250
    Attribute: 
      Attribute_Label: Geolgyl075# or Geolgyl#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 10599
    Attribute:
      Attribute_Label: Geolgyl075-id or Geolgyl-id
      Attribute_Definition: User-assigned feature number.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 3
          Range_Domain_Maximum: 49939
    Attribute: 
      Attribute_Label: Code
      Attribute_Definition: The type of geologic boundary code.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 11
          Enumerated_Domain_Value_Definition: Contact          
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 12
          Enumerated_Domain_Value_Definition: Fault (copied in fault file)
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 13
          Enumerated_Domain_Value_Definition: 
            Thrust fault (copied in fault file)
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 14
          Enumerated_Domain_Value_Definition: 
            Normal fault (copied in fault file)
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 16
          Enumerated_Domain_Value_Definition: 
            Low angle detachment fault (copied in fault file)
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 21
          Enumerated_Domain_Value_Definition: Shoreline
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 23
          Enumerated_Domain_Value_Definition: International boundary
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
    Attribute:
      Attribute_Label: Text
      Attribute_Definition: The type of geologic boundary.
      Attribute_Definition_Source: U.S. Geological Survey
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Contact
          Enumerated_Domain_Value_Definition: 
            The surface where two different kinds of rocks meet.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Fault (copied in fault file)
          Enumerated_Domain_Value_Definition:
            A fault is a fracture or fracture zone in the Earth's crust along
            which one side moves with respect to the other.  This data set 
            includes both the faults and the line decorations.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Thrust fault (copied in fault file)
          Enumerated_Domain_Value_Definition:
            A thrust fault is a gently inclined fault (less then 45 degrees) 
            along which the principal movement has been more nearly horizontal 
            than vertical.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Normal fault (copied in fault file)
          Enumerated_Domain_Value_Definition: 
            A normal fault is a steeply inclined fault (more than 45 degrees) 
            where rocks above the fault have moved down relative to those 
            below the fault.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: 
            Low angle detachment fault (copied in fault file)
          Enumerated_Domain_Value_Definition: 
            A large, shallowly-inclined normal fault formed during extension of 
            the Earth's crust.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: Shoreline
          Enumerated_Domain_Value_Definition: 
            The line where geologic map units are terminated by a body of water.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey
        Enumerated_Domain:
          Enumerated_Domain_Value: International boundary
          Enumerated_Domain_Value_Definition: 
            The line where geologic map units are terminated by an international 
            boundary.
          Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey

Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing
        Address: MS 902, Box 25046, Denver Federal Center
        City: Lakewood
        State_or_Province: CO
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: 303-236-0953
      Contact_Electronic_Mail_Address: gellis@usgs.gov
  Distribution_Liability:
    Although these data have been processed successfully on a computer system at 
    the U.S. Geological Survey, no warranty expressed or implied is made by the 
    U.S. Geological Survey regarding the utility of the data on any other  
    system, nor shall the act of distribution constitute any such warranty.  No 
    responsibility is assumed by the U.S. Geological Survey in the use of these 
    data.

  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARCE
        File_Decompression_Technique: gzipped tar file
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: 
                <http://geology.cr.usgs.gov/pub/National-Atlas/>
                Geologic_Map_of_the_US
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ESRI Shapefile
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name:
                <http://geology.cr.usgs.gov/pub/National-Atlas/>
                Geologic_Map_of_the_US
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: SDTS
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name:
                <http://geology.cr.usgs.gov/pub/National-Atlas/>
                Geologic_Map_of_the_US

    Fees:
      There is no charge for download of these files.  

Metadata_Reference_Information:
  Metadata_Date: 20010328
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Charles A. Bush
      Contact_Position: Geophysicist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 
          MS 913, Box 25046, Room 1512, Building 25, Denver Federal Center
        City: Lakewood
        State_or_Province: CO
        Postal_Code: 80025
        Country: USA
      Contact_Voice_Telephone: 303-236-4723
      Contact_Facsimile_Telephone: 303-236-0214
      Contact_Electronic_Mail_Address: cbush@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Security_Information:
    Metadata_Security_Classification_System: None
    Metadata_Security_Classification: Unclassified
    Metadata_Security_Handling_Description: None