Identification_Information:
  Citation:
    Citation_Information:
      Originator: Wilson, F.H.
      Originator: Labay, K.A.
      Originator: Shew, N.B.
      Originator: Mohadjer, Solmaz
      Publication_Date: 2005
      Title:
        Preliminary integrated geologic map databases for the United
        States:  Digital data for the reconnaissance geologic map
        for the Yukon-Koyukuk basin, Alaska
      Edition: ver. 1.0
      Geospatial_Data_Presentation_Form: vector digital data
      Series_Information:
        Series_Name: United States Geological Survey
        Issue_Identification: OFR 2005-1341
      Online_Linkage: XXX
  Description:
    Abstract:
      The 1:500,000-scale reconnaissance geologic map of the
      Yukon-Koyukuk basin, Alaska covers more than 80,000 square
      miles (200,000 square kilometers) of western Alaska, or
      nearly 15 percent of the total land area of the state.  It
      stretches from the Brooks Range on the north, to the
      Kuskokwim River and lower reaches of the Yukon River on
      the south, and from Kotzebue Sound, Seward Peninsula, and
      Norton Sound on the west, to the Yukon-Tanana Uplands and
      Tanana-Kuskokwim Lowlands on the east.  The region is
      characterized by isolated hilly areas and low mountain
      ranges separated by broad alluviated interior and coastal
      lowlands.  Most of the lowlands, except those bordering
      Kotzebue Sound and Norton Sound, support a heavy vegetation
      cover.  Exposures of bedrock are generally limited to
      rubble-strewn ridgetops and cutbanks along rivers.

      The data was compiled largely from geologic field data
      collected between 1953 and 1986 by the U.S. Geological
      Survey and published as 1:250,000 scale geologic
      quadrangle maps.  Additional data for parts of the
      Wiseman, Ruby, Medfra, and Ophir quadrangles came from
      1:63,360 scale quadrangle map published by the Alaska
      Division of Geological and Geophysical Surveys.  This
      compilation also incorporates unpublished field data.

      This data set is also a portion of a statewide geology
      database, which is being compiled by the U.S. Geological
      Survey's National Surveys and Analysis (NSA) project, whose
      goal is to compile geologic, geochemical, geophysical,
      and other data.
    Purpose:
      This data set represents part of a systematic effort to
      release geologic map data for the United States in a
      uniform manner.  Geologic data in this series has been
      compiled from a wide variety of sources, published and
      unpublished, ranging from state and regional geologic maps
      to large-scale field mapping.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2005
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -162.0
      East_Bounding_Coordinate: -150.0
      North_Bounding_Coordinate: 68.0
      South_Bounding_Coordinate: 63.0
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: geology
      Theme_Keyword: bedrock geology
      Theme_Keyword: surficial geology
    Theme:
      Theme_Keyword_Thesaurus: Geographic names information system (GNIS)
      Theme_Keyword: Ambler River
      Theme_Keyword: Baird Mountains
      Theme_Keyword: Bettles
      Theme_Keyword: Candle
      Theme_Keyword: Hughes
      Theme_Keyword: Kateel River
      Theme_Keyword: Medfra
      Theme_Keyword: Melozitna
      Theme_Keyword: Nulato
      Theme_Keyword: Norton Bay
      Theme_Keyword: Ophir
      Theme_Keyword: Ruby
      Theme_Keyword: Selawik
      Theme_Keyword: Shungnak
      Theme_Keyword: Survey Pass
      Theme_Keyword: Tanana
      Theme_Keyword: Unalakleet
      Theme_Keyword: Wiseman
  Access_Constraints: None
  Use_Constraints:
    None.  Acknowledgment of the U.S. Geological Survey would
    be appreciated in products derived from these data.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Frederic H. Wilson
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 4200 University Drive
        City: Anchorage
        State_or_Province: Alaska
        Postal_Code: 99508-4667
        Country: U.S.A.
      Contact_Voice_Telephone: 907-786-7448
      Contact_Electronic_Mail_Address: fwilson@usgs.gov
  Data_Set_Credit:
    This data set was prepared by Keith Labay (contractor),
    F.H. Wilson (USGS) and Solmaz Mohadjer (contractor)
  Native_Data_Set_Environment:
    Data set was created using ESRI ARC/Info version 7 on a
    Unix platform
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      The original source materials for this data set are from
      various scales (1:63,360 to 1:250,000), medium (digital,
      mylar, paper), and scope (bedrock, surficial, tectonic).
      All vector features were originally hand digitized on a
      large digitizing tablet or on screen.  Vector and polygon
      attributes were assigned based on the original source.  The
      digital data has been visually checked, and the geologic
      map has been technically reviewed and edited.
  Logical_Consistency_Report:
    Each geology coverage is a network coverage containing
    attributed arcs and polygons.  Each polygon has coded a
    attribute designating the mapped geologic unit.  Faults,
    stratigraphic contacts, and other linear features are
    represented as arcs.  When a fault is also a stratigraphic
    contact, only a single arc is present.  Dangling arcs may
    be present (faults, dike, etc.)
  Completeness_Report:
    The complete data set consists of the GIS files and an
    associated database of geologic units.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        This data is presented for use at a nominal scale of
        1:500,000, although individual datasets may contain data
        for use at larger scales.  Details within the attribute
        tables and metadata provide information on map sources
        and the appropriate scales for use.
  Lineage:
    Process_Step:
      Process_Description:
        Linework for the geology compilation was hand digitized from
        material of various media and scale.  The arcs and polygons
        were attributed.  The spatial databases are provided in
        UTM projection and geographic coordinates.  The native
        ARC/Info coverages have been exported to an interchange
        file format, .e00, and also converted to Arc/View shape files.
      Process_Date: 2005
      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
            Contact_Organization: U.S. Geological Survey, Alaska Science Center
            Contact_Person: Frederic H. Wilson
          Contact_Position: Geologist
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 4200 University Drive
            City: Anchorage
            State_or_Province: Alaska
            Postal_Code: 99508
            Country: USA
          Contact_Voice_Telephone: 907-786-7445
          Contact_Electronic_Mail_Address: fwilson@usgs.gov
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 4
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.9996
            Longitude_of_Central_Meridian: -159.0
            Latitude_of_Projection_Origin: 0.0
            False_Easting: 0.0
            False_Northing: 0.0
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.000256
          Ordinate_Resolution: 0.000256
        Planar_Distance_Units: meters
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 5
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.9996
            Longitude_of_Central_Meridian: -153.0
            Latitude_of_Projection_Origin: 0.0
            False_Easting: 0.0
            False_Northing: 0.0
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.000256
          Ordinate_Resolution: 0.000256
        Planar_Distance_Units: meters
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: polygons
      Entity_Type_Definition:
        Characteristics of the polygon features in the geology
        coverages are coded in the polygon attribute table.  The
        table <cov>.pat includes the following items:  CLASS,
        NSACLASS, NSAMOD, QCLASS, SOURCE, LABEL, MIN_AGE, and
        MAX_AGE
      Entity_Type_Definition_Source: This data set
    Attribute:
      Attribute_Label: NSACLASS
      Attribute_Definition:
        NSACLASS is a positive integer value (4 5 B) item in the
        polygon attribute table.  Values range discontinuously from
        100 to 9325.  NSACLASS is a numeric code for the geologic
        unit.  This data set represents a generalized map, thus it
        is possible that a geologic unit is made of multiple NSACLASS
        values.  Some map areas include more detailed Quaternary
        mapping, requiring some of the NSACLASS values to be
        subdivided.  These geologic units are attributed in the .pat
        item QCLASS.  Each NSACLASS or QCLASS matches with geologic
        unit labels in LABEL and has a minimum (MIN_AGE) and
        maximum (MAX_AGE) range, given in million of years (my).

        Supplemental attribute tables included with this data set,
        contain additional descriptive information of each geologic
        unit.  A user may use items SOURCE and CLASS to retrieve
        information about the original units from which these
        generalized units were formed.

        NOTE:  Because of the limitations of common GIS fonts, the
        letters "Mz", "Pz", "Tr", and "Pa" are substituted for
        the standard symbols for "Mesozoic", "Paleozoic",
        "Triassic", and "Pennsylvanian."
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 100
          Enumerated_Domain_Value_Definition:
            Qua - Surficial deposits, undifferentiated (Quaternary);
            age 0-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 102
          Enumerated_Domain_Value_Definition: Water
        Enumerated_Domain:
          Enumerated_Domain_Value: 105
          Enumerated_Domain_Value_Definition:
            Qf - Floodplain and tidal flats deposits (Holocene); age
            0-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 107
          Enumerated_Domain_Value_Definition:
            Qua - Surficial deposits, undifferentiated (Quaternary);
            age 0-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 108
          Enumerated_Domain_Value_Definition:
            Qua - Surficial deposits, undifferentiated (Quaternary);
            age 0-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 110
          Enumerated_Domain_Value_Definition:
            Qua - Surficial deposits, undifferentiated (Quaternary);
            age 0-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 111
          Enumerated_Domain_Value_Definition:
            Qf - Floodplain and tidal flats deposits (Holocene); age
            0.01-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 116
          Enumerated_Domain_Value_Definition:
            Qf - Floodplain and tidal flats deposits (Holocene); age
            0-0.01 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 119
          Enumerated_Domain_Value_Definition:
            Qsa - Actively drifting and recently stabilized dune fields
            (Holocene); age 0-0.01 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 120
          Enumerated_Domain_Value_Definition:
            Qs - Eolian and water-laid sand and silt sheets and
            stabilized dune fields (Holocene and Pleistocene); age
            0-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 125
          Enumerated_Domain_Value_Definition:
            QTgl - Glacial and glaciolacustrine deposits (Pleistocene
            and Pliocene?); age 0-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 135
          Enumerated_Domain_Value_Definition:
            QTgl - Glacial and glaciolacustrine deposits (Pleistocene and
            Pliocene?); age 0.01-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 190
          Enumerated_Domain_Value_Definition:
            QTgl - Glacial and glaciolacustrine deposits (Pleistocene
            and Pliocene?); age 0.06-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 285
          Enumerated_Domain_Value_Definition:
            QTgr - Quartz gravel deposits (Quaternary or Tertiary);
            age 0.01 - 5.3 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 300
          Enumerated_Domain_Value_Definition:
            Qab - Alkalic basalt cones and flows (Pleistocene); age
            0-1.6 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 305
          Enumerated_Domain_Value_Definition:
            Qtb - Tholeiitic basalt cones and flows (Holocene? and
            Pleistocene); age 0-0.01 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 350
          Enumerated_Domain_Value_Definition:
            QTb - Basalt flows (Pleistocene and Pliocene); age
            0.01-5.3 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 640
          Enumerated_Domain_Value_Definition:
            Ts - Small deposits of nonmarine conglomerate, sandstone,
            shale, and coal (Tertiary); age 5.3-57.8 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1002
          Enumerated_Domain_Value_Definition:
            Td - Dacite and rhyolite lava flows, domes, and volcaniclastic
            rocks (Eocene and Paleocene); age 1.6-66.4 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1004
          Enumerated_Domain_Value_Definition: Tb - Basalt flows (Oligocene); age 1.6-66.4 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1011
          Enumerated_Domain_Value_Definition:
            Thr - Rhyolite hypabyssal bodies (Miocene to Paleocene,
            mostly Early Tertiary or Eocene?); age 1.6-66.4 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1081
          Enumerated_Domain_Value_Definition:
            Tad - Andesite and basalt lava flows and volcaniclastic rocks
            and dacite and rhyolite lava flows, domes, and volcaniclastic
            rocks, undivided (Eocene and Paleocene); age 39-49 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1103
          Enumerated_Domain_Value_Definition:
            Ta - Andesite and basalt lava flows and volcaniclastic rocks
            (Eocene and Paleocene); age 36.6-84 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1120
          Enumerated_Domain_Value_Definition:
            Tt - Tuff and tuff breccia (Eocene and Paleocene); age
            36.6-66.4 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1320
          Enumerated_Domain_Value_Definition: Tg - Granite (Eocene or Paleocene); age 57.8-66.4 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1600
          Enumerated_Domain_Value_Definition:
            TKad - Andesite and basalt lava flows and volcaniclastic
            rocks and dacite and rhyolite lava flows, domes, and
            volcaniclastic and hypabyssal rocks, undivided (early
            Tertiary and Late Cretaceous); age 52-84 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1601
          Enumerated_Domain_Value_Definition:
            TKi - Shallow intrusive rocks of silicic and intermediate
            composition (Tertiary and Late Cretaceous); age 23.7-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1602
          Enumerated_Domain_Value_Definition:
            TKi - Shallow intrusive rocks of silicic and intermediate
            composition (Tertiary and Late Cretaceous); 57.8-84 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1603
          Enumerated_Domain_Value_Definition:
            TKd - Dacite and rhyolite lava flows, domes, and volcaniclastic
            and hypabyssal rocks (early Tertiary and Late Cretaceous);
            age 23.7-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1605
          Enumerated_Domain_Value_Definition:
            TKa - Andesite and basalt lava flows and volcaniclastic
            rocks (early Tertiary and Late Cretaceous); age 23.7-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1620
          Enumerated_Domain_Value_Definition:
            TKi - Shallow intrusive rocks of silicic and intermediate
            composition (Tertiary and Late Cretaceous); age 1.6-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1630
          Enumerated_Domain_Value_Definition:
            TKvc - Volcano-plutonic complexes (early Tertiary and
            Cretaceous); age 23.7-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1641
          Enumerated_Domain_Value_Definition:
            TKi - Shallow intrusive rocks of silicic and intermediate
            composition (Tertiary and Late Cretaceous); age 23.7-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1650
          Enumerated_Domain_Value_Definition:
            TKi - Shallow intrusive rocks of silicic and intermediate
            composition (Tertiary and Late Cretaceous); age 23.7-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1655
          Enumerated_Domain_Value_Definition:
            TKg - Granite and granodiorite (early Tertiary and Late
            Cretaceous); age 23.7-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1660
          Enumerated_Domain_Value_Definition:
            TKm - Monzonite (early Tertiary and Late Cretaceous);
            age 23.7-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1680
          Enumerated_Domain_Value_Definition:
            TDg - Gabbro and diabase (Tertiary? to Devonian?); age
            1.6-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1815
          Enumerated_Domain_Value_Definition:
            Kcc - Carbonate-clast conglomerate, sandstone and shale
            (Cretaceous); age 66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1820
          Enumerated_Domain_Value_Definition:
            Kcvg - Carbonate- and volcanic-clast graywacke and
            mudstone (Cretaceous); age 66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1821
          Enumerated_Domain_Value_Definition:
            Kcg - Carbonate-clast graywacke and mudstone (Cretaceous);
            age 66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1822
          Enumerated_Domain_Value_Definition:
            Kcc - Carbonate-clast conglomerate, sandstone, and shale
            (Cretaceous); age 66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1823
          Enumerated_Domain_Value_Definition:
            Kcvg - Carbonate- and volcanic-clast graywacke and mudstone
            (Cretaceous); age 66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1905
          Enumerated_Domain_Value_Definition:
            Ksu - Shale, siltstone, and sandstone, undivided (Cretaceous);
            age 74.5-87.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1906
          Enumerated_Domain_Value_Definition:
            Ksu - Shale, siltstone, and sandstone, undivided (Cretaceous);
            age 66.4-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1940
          Enumerated_Domain_Value_Definition:
            Kss - Shallow marine sandstone, siltstone, and shale (Late
            Cretaceous); age 91-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1941
          Enumerated_Domain_Value_Definition:
            Ks - Fluvial and shallow marine sandstone and shale,
            undivided (Cretaceous); age 66.4-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1942
          Enumerated_Domain_Value_Definition:
            Ksu - Shale, siltstone, and sandstone, undivided (Cretaceous);
            age 66.4-113 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1970
          Enumerated_Domain_Value_Definition:
            Ksu - Shale, siltstone, and sandstone, undivided
            (Cretaceous); age 66.4-113 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1971
          Enumerated_Domain_Value_Definition:
            Kss - Shallow marine sandstone, siltstone, and shale (Late
            Cretaceous); age 66.4-113 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1985
          Enumerated_Domain_Value_Definition:
            Ksc - Fluvial and shallow marine sandstone and conglomerate
            (Late Cretaceous); age 66.4-113 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 1990
          Enumerated_Domain_Value_Definition:
            Kqc - Quartz- and metagraywacke-clast conglomerate,
            sandstone, and shale (Cretaceous); age 91-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2020
          Enumerated_Domain_Value_Definition:
            Ks - Fluvial and shallow marine sandstone and shale,
            undivided (Cretaceous); age 66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2021
          Enumerated_Domain_Value_Definition:
            Ks - Fluvial and shallow marine sandstone and shale,
            undivided (Cretaceous); age 88.5-113 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2023
          Enumerated_Domain_Value_Definition:
            TKic - Complexes of shallow intrusive rocks and altered
            Cretaceous sedimentary rocks of the Yukon-Koyukuk basin,
            undivided (early Tertiary and Cretaceous); age 57.8-113 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2030
          Enumerated_Domain_Value_Definition:
            Kmc - Mafic igneous-clast conglomerate, sandstone, and
            mudstone (Cretaceous); age 91-113 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2101
          Enumerated_Domain_Value_Definition:
            Kms - Marine sandstone and siltstone (Cretaceous); age
            91-113 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2106
          Enumerated_Domain_Value_Definition:
            Kvc - Volcanic-clast conglomerate, sandstone, and shale
            (Cretaceous); age 66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2125
          Enumerated_Domain_Value_Definition:
            Kqs - Quartz-carbonate sandstone (Early Cretaceous); age
            131-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2152
          Enumerated_Domain_Value_Definition:
            Kcs - Offshore calcareous sandstone, siltstone, and
            shale (Cretaceous); age 97.5-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2180
          Enumerated_Domain_Value_Definition:
            Kvg - Volcanic-clast graywacke and mudstone (Cretaceous);
            age 97.5-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2182
          Enumerated_Domain_Value_Definition:
            Kgc - Volcanic graywacke and conglomerate (Early Cretaceous?);
            age 119-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2210
          Enumerated_Domain_Value_Definition:
            Krd - Rhyolite, dacite, and trachyte lava flows and
            volcaniclastic rocks (Late Cretaceous); age 57.8-97.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2320
          Enumerated_Domain_Value_Definition:
            Ktg - Tuff, volcanic graywacke, and mudstone (Early
            Cretaceous); age 97.5-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2330
          Enumerated_Domain_Value_Definition:
            Kv - Andesite and basalt lava flows and volcaniclastic
            rocks (Early Cretaceous); age 97.5-163 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2335
          Enumerated_Domain_Value_Definition:
            Kbd - Spilitic basalt and diabase (Early Cretaceous);
            age 97.5-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2336
          Enumerated_Domain_Value_Definition:
            Kft - Shoshonitic tuffs and lava flows (Early Cretaceous);
            age 113-124 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2410
          Enumerated_Domain_Value_Definition:
            Kgu - Granitic rocks of uncertain affinities (Cretaceous?);
            age 66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2420
          Enumerated_Domain_Value_Definition:
            Kgd - Granodiorite and granite (Late Cretaceous); age
            66.4-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2460
          Enumerated_Domain_Value_Definition: Ksm - Syenite and monzonite (Late Cretaceous); age 66.4-88.5 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2515
          Enumerated_Domain_Value_Definition:
            Kgr - Granite and granodiorite (Early Cretaceous);
            age 110-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2530
          Enumerated_Domain_Value_Definition:
            Kgr - Granite and granodiorite (Early Cretaceous); age
            110-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2535
          Enumerated_Domain_Value_Definition:
            Knsy - Syenite, monzonite, and nepheline syenite; nepheline
            syenite unit (Early
            Cretaceous); age 97.5-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 2545
          Enumerated_Domain_Value_Definition:
            Ksy - Syenite, monzonite, and nepheline syenite (Early
            Cretaceous); 97.5-144 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 3380
          Enumerated_Domain_Value_Definition:
            Jgt - Trondhjemite and tonalite (Late and Middle Jurassic);
            age 131-152 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 3496
          Enumerated_Domain_Value_Definition:
            MzPzum - Mafic-ultramafic complexes (Mesozoic and Paleozoic?);
            age 152-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 3497
          Enumerated_Domain_Value_Definition:
            MzPzum - Mafic-ultramafic complexes (Mesozoic and Paleozoic?);
            age 152-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 3498
          Enumerated_Domain_Value_Definition:
            MzPzum - Mafic-ultramafic complexes (Mesozoic and Paleozoic?);
            age 152-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 3851
          Enumerated_Domain_Value_Definition:
            JMc - Chert, cherty tuff, argillite, crystal-lithic tuff,
            volcanic breccia, and conglomerate (Jurassic? to Mississippian);
            age 200-360 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 4032
          Enumerated_Domain_Value_Definition:
            Trs - Spiculite and sandy limestone (Late Triassic); age
            208-225 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5021
          Enumerated_Domain_Value_Definition:
            TrMg - Graywacke, grit, and argillite (Triassic? to
            Mississippian?); age 187-360 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5131
          Enumerated_Domain_Value_Definition:
            TrMbc - Pillow basalt, chert, and minor agglomerate (Triassic?
            to Mississippian?); age 208-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5140
          Enumerated_Domain_Value_Definition:
            JDv - Altered basalt, gabbro, chert, argillaceous rocks,
            tuff, graywacke, and carbonate rocks (Jurassic to Devonian);
            age 144-360 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5145
          Enumerated_Domain_Value_Definition: KJm - Melange (Early Cretaceous? and Jurassic); age 144-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5150
          Enumerated_Domain_Value_Definition:
            MzPzum - Mafic-ultramafic complexes (Mesozoic and Paleozoic?);
            age 187-286 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5241
          Enumerated_Domain_Value_Definition: MzZma - Metabasite (Mesozoic? to Proterozoic?); age 66.4-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5242
          Enumerated_Domain_Value_Definition: MzZmr - Metabasite (Mesozoic? to Proterozoic?); age 245-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5243
          Enumerated_Domain_Value_Definition: MzZms - Metabasite (Mesozoic? to Proterzoic?); age 66.4-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5280
          Enumerated_Domain_Value_Definition:
            JDv - Altered basalt, gabbro, chert, argillaceous rocks,
            tuff, graywacke, and carbonate rocks (Jurassic to Devonian);
            age 187-360 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5295
          Enumerated_Domain_Value_Definition:
            MzZfm - Metabasite and felsic schist, undivided (Mesozoic? to
            Proterozoic?); age 66.4-2500 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5310
          Enumerated_Domain_Value_Definition:
            DCd - East Fork Hills Formation (Devonian to Cambrian);
            age 374-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5320
          Enumerated_Domain_Value_Definition: Pzcs - Carbonate rocks (Paleozoic); age 360-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5321
          Enumerated_Domain_Value_Definition:
            PzZus - Pelitic schist, calc schist, and quartzite and
            carbonate rocks, undivided (Paleozoic and Proterozoic?);
            age 360-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5322
          Enumerated_Domain_Value_Definition:
            PzZss - Pelitic schist, calc schist, and quartzite
            (Paleozoic and Proterozoic?); age 360-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5340
          Enumerated_Domain_Value_Definition: Pzcr - Carbonate rocks (Paleozoic); age 245-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5521
          Enumerated_Domain_Value_Definition:
            MzZrc - Complex of the Reindeer Hills (Mesozoic to
            Proterozoic?); age 245-570 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5525
          Enumerated_Domain_Value_Definition: Pzca - Carbonate rocks (Paleozoic); age 245-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5542
          Enumerated_Domain_Value_Definition:
            MzPzq - Quartzite, grit, argillite, and quartz-mica schist
            (Early Paleozoic and Proterozoic?); age 144-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5560
          Enumerated_Domain_Value_Definition:
            Pzpa - Phyllite and subordinate metagraywacke (Paleozoic?);
            age 245-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5561
          Enumerated_Domain_Value_Definition: Pzpr - Phyllite (Paleozoic?); age xxx
        Enumerated_Domain:
          Enumerated_Domain_Value: 5565
          Enumerated_Domain_Value_Definition:
            Pzg - Metagraywacke and subordinate phyllite (Paleozoic?);
            age 208-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 5740
          Enumerated_Domain_Value_Definition:
            Ps - Sandstone, sandy limestone, and conglomerate (Permian);
            age 245-286 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 6080
          Enumerated_Domain_Value_Definition:
            TrDc - Chert, argillite, and limestone (Triassic? to
            Devonian); age 208-374 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 6522
          Enumerated_Domain_Value_Definition: Dgnr - Granitic gneiss (Devonian); age 360-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 6523
          Enumerated_Domain_Value_Definition: Dgna - Granitic gneiss (Devonian); age 360-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 6620
          Enumerated_Domain_Value_Definition:
            DSp - Paradise Fork Formation (Early Devonian and Silurian);
            age 421-438 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 6960
          Enumerated_Domain_Value_Definition:
            DSw - Whirlwind Creek Formation (Devonian and Late Silurian);
            age 387-421 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 7261
          Enumerated_Domain_Value_Definition: Df - Felsic schist (Devonian); age 360-408 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 7520
          Enumerated_Domain_Value_Definition:
            Ont - Novi Mountain and Telsitna Formations, undivided
            (Ordovician); age 438-505 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 7581
          Enumerated_Domain_Value_Definition: Oc - Chert and argillite (Ordovician); age 438-505 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8300
          Enumerated_Domain_Value_Definition:
            PzZq - Quartzite, grit, argillite, and quartz-mica schist
            (Early Paleozoic and Proterozoic?); age 505-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8500
          Enumerated_Domain_Value_Definition:
            PzZi - Granitic gneiss (Paleozoic? and Proterozoic); age
            360-705 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8601
          Enumerated_Domain_Value_Definition:
            PzZsr - Pelitic schist, calc, schist, and quartzite
            (Paleozoic and Proterozoic?); age 286-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8602
          Enumerated_Domain_Value_Definition:
            PzZsa - Pelitic schist, calc schist, and quartzite
            (Paleozoic and Proterozoic); age 286-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8605
          Enumerated_Domain_Value_Definition:
            PzZua - Pelitic schist, calc schist, and quartzite and
            carbonate rocks, undivided (Paleozoic and Proterozoic);
            age 286-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8610
          Enumerated_Domain_Value_Definition:
            Zc - Calc schist, quartz-mica schist, and greenstone
            (Proterozoic); age 360-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8625
          Enumerated_Domain_Value_Definition:
            PzZsr - Pelitic schist, calc schist, and quartzite (Paleozoic
            and Proterozoic?); age 360-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8640
          Enumerated_Domain_Value_Definition:
            Zs - Pelitic schist, quartzite, quartzo-feldspathic gneiss,
            and greenstone (Proterozoic); age 570-1600 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8641
          Enumerated_Domain_Value_Definition:
            Zs - Pelitic schist, quartzite, quartzo-feldspathic gneiss,
            and greenstone (Proterozoic); age 570-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8700
          Enumerated_Domain_Value_Definition: Zv - Metavolcanic rocks (Late Proterozoic); age 360-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 8801
          Enumerated_Domain_Value_Definition:
            MzZkc - Complex of the Kokrines Hills (Mesozoic to
            Proterozoic?); age 360-900 my
        Enumerated_Domain:
          Enumerated_Domain_Value: 9325
          Enumerated_Domain_Value_Definition:
            PzZsr - Pelitic schist, calc schist, and quartzite
            (Paleozoic and Proterozoic?); age 144-2500 my
    Attribute:
      Attribute_Label: NSAMOD
      Attribute_Definition:
        NSAMOD is a character (8 10 C) item in the polygon
        attribute table
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          HFS - contact metamorphism; hornfels
          Q - queried unit
    Attribute:
      Attribute_Label: SOURCE
      Attribute_Definition:
        SOURCE is a character (6 8 C) item found in both the arc
        and polygon attribute tables.  The values are abbreviated
        codes representing the original source reference for the
        polygon or arc feature.  The format for SOURCE is
        XX###, where XX is a two letter code for the 1:250,000
        scale quadrangle and ### is a three digit number (with
        leading zeros).  All source codes with '001' are unspecified
        sources for water and ice features, often paper topographic
        maps, and DRG or DLG files.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: AR003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: BM002
          Enumerated_Domain_Value_Definition:
            Karl, S.M., Dumoulin, J.A., Ellersieck, Inyo, Harris, A.G.,
            and Schmidt, J.M., 1989, Preliminary geologic map of the
            Baird Mountains and part of the Selawik quadrangles,
            Alaska:  U.S. Geological Survey Open-File Report 89-551,
            scale 1:250,000, 65 p.
        Enumerated_Domain:
          Enumerated_Domain_Value: BM003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: BT002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., and Miller, T.P., 1973, Bedrock
            geologic map of the Bettles and southern part of Wiseman
            quadrangles, Alaska:  U.S. Geological Survey Miscellaneous
            Field Studies Map MF-492, scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: BT003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: CA002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., 1967, Regional geologic map of the
            Candle quadrangle, Alaska:  U.S. Geological Survey
            Miscellaneous Geologic Investigations Map I-492,
            scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: CA003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: HU002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., and Miller, T.P., 1966, Regional geologic
            map of the Hughes quadrangle, Alaska:  U.S. Geological
            Survey Miscellaneous Geologic Investigations Series Map
            I-459, scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: HU003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: KT002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., 1966, Regional geology of the Kateel
            River quadrangle, Alaska:  U.S. Geological Survey
            Miscellaneous Investigations Map I-437, 1 sheet,
            scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: KT003
          Enumerated_Domain_Value_Definition: Patton, W.W., Jr., unpub. data, 1997
        Enumerated_Domain:
          Enumerated_Domain_Value: KT004
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: MD002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Moll, E.J., Dutro, J.T., Jr., Silberman,
            M.L., and Chapman, R.M., 1980, Preliminary geologic map of
            the Medfra quadrangle, Alaska:  U.S. Geological Survey
            Open-File Report 80-811A, 1 sheet, scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: MD003
          Enumerated_Domain_Value_Definition:
            Bundtzen, T.K., Pinney, D.S., and Laird, G.M., 1997,
            Preliminary geologic map and data table from the Ophir C-1
            and western Medfra C-6 quadrangles, Alaska:  Alaska Division
            of Geological and Geophysical Surveys Public Data File 97-46,
            scale 1:63,360, 10 p.
        Enumerated_Domain:
          Enumerated_Domain_Value: MD004
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: MZ002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Miller, T.P., Chapman, R.M., and Yeend,
            Warren, 1978, Geologic map of the Melozitna quadrangle,
            Alaska:  U.S. Geological Survey Miscellaneous Geologic
            Investigations Map I-1071, scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: MZ003
          Enumerated_Domain_Value_Definition:
            Roeske, S.M., Dusel-Bacon, Cynthia, Aleinikoff, J.N., Snee,
            L.W., and Lanphere, M.A., 1995, Metamorphic and structural
            history of continental crust at a Mesozoic collisional
            margin, the Ruby terrane, central Alaska:  Journal of
            Metamorphic Geology, v. 13, p. 25-40.
        Enumerated_Domain:
          Enumerated_Domain_Value: MZ004
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: NL003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., and Moll-Stalcup, E.J., 2000, Geologic map of
            the Nulato quadrangle, west-central Alaska:  U.S. Geological
            Survey Geologic Investigations Series I-2677, 41 p.,
            1 sheet, scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: NL004
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, Keith, Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: NR002
          Enumerated_Domain_Value_Definition: Patton, W.W., Jr., unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: NR003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: OP002
          Enumerated_Domain_Value_Definition:
            Chapman, R.M., Patton, W.W., Jr., and Moll, E.J., 1985,
            Reconnaissance geologic map of the Ophir quadrangle,
            Alaska:  U.S. Geological Survey Open-File Report 85-203,
            1 sheet, scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: OP005
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: RB009
          Enumerated_Domain_Value_Definition: Patton, W.W., Jr., unpub. data, 2001
        Enumerated_Domain:
          Enumerated_Domain_Value: SE002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., and Miller, T.P., 1968, Regional
            geologic map of the Selawik and southeastern Baird
            Mountains quadrangles, Alaska:  U.S. Geological Survey
            Miscellaneous Geologic Investigations Map I-530, scale
            1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: SE003
          Enumerated_Domain_Value_Definition:
            Karl, S.M., Dumoulin, J.A., Ellersieck, Inyo, Harris, A.G.,
            1989, Preliminary geologic map of the Baird Mountains and
            part of the Selawik quadrangles, Alaska:  U.S. Geological
            Survey Open-File Report 89-551, scale 1:250,000, 65 p.
        Enumerated_Domain:
          Enumerated_Domain_Value: SE004
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: SH002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Miller, T.P., and Tailleur, I.L., 1968,
            Regional geologic map of the Shungnak and southern part
            of the Ambler River quadrangles, Alaska:  U.S. Geological
            Survey Miscellaneous Geological Investigations Map
            I-554, scale 1:250,000.
        Enumerated_Domain:
          Enumerated_Domain_Value: SH003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: SH004
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: SP003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: TN008
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: UL002
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., and Moll-Stalcup, E.J., 1996, Geologic
            map of the Unalakleet quadrangle, west-central Alaska:
            U.S. Geological Survey Miscellaneous Investigations
            Series Map I-2559, scale 1:250,000, 39 p.
        Enumerated_Domain:
          Enumerated_Domain_Value: UL003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
        Enumerated_Domain:
          Enumerated_Domain_Value: WI003
          Enumerated_Domain_Value_Definition:
            Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew,
            Nora, unpub. data, 2005
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: arcs
      Entity_Type_Definition:
        Characteristics of the arc features in the geology coverages
        are coded in the arc attribute table.  Table <cov>.aat
        includes the following items:  ARC-CODE, ARC-PARA1, and
        SOURCE.  For explanation of SOURCE, see attribute definitions
        for polygons.
      Entity_Type_Definition_Source: this data set
    Attribute:
      Attribute_Label: ARC-CODE
      Attribute_Definition:
        ARC-CODE is a positive integer value (3 3 I) item in the
        arc attribute table.  Values range discontinuously from
        1 to 99.  Values match one-for-one with geologic features
        (such as stratgraphic boundary, fault, etc.).  Some ARC-CODE
        features have additional modifiers in item ARC-PARA1.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Stratigraphic or intrusive contact, location certain
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: Stratigraphic or intrusive contact, location approximate
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition: Stratigraphic or intusive contact, loaction inferred, queried
        Enumerated_Domain:
          Enumerated_Domain_Value: 4
          Enumerated_Domain_Value_Definition:
            Normal fault, location certain; if ARC-PARA1 = 1, then
            upthrown side on on right from origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 5
          Enumerated_Domain_Value_Definition:
            Normal fault, location approximate, if ARC-PARA1 = 1, then
            upthrown side is on right from origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 6
          Enumerated_Domain_Value_Definition:
            Normal fault, location inferred or queried; if ARC-PARA1 = 1,
            then upthrown side is on right from origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 7
          Enumerated_Domain_Value_Definition: Shoreline or riverbank
        Enumerated_Domain:
          Enumerated_Domain_Value: 9
          Enumerated_Domain_Value_Definition: Boundary or altered zone or hornfels
        Enumerated_Domain:
          Enumerated_Domain_Value: 10
          Enumerated_Domain_Value_Definition: Thrust fault, location certain; teeth on right from origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 11
          Enumerated_Domain_Value_Definition:
            Thrust fault, location approximate; teeth on right from
            origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 12
          Enumerated_Domain_Value_Definition:
            Thrust fault, location inferred, queried; teeth on right
            from origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 14
          Enumerated_Domain_Value_Definition: Caldera or crater rim
        Enumerated_Domain:
          Enumerated_Domain_Value: 19
          Enumerated_Domain_Value_Definition: Internal contact having tics on right from origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 30
          Enumerated_Domain_Value_Definition: Fault, sense of displacement uncertain; location certain
        Enumerated_Domain:
          Enumerated_Domain_Value: 31
          Enumerated_Domain_Value_Definition: Fault, sense of displacement uncertain, location approximate
        Enumerated_Domain:
          Enumerated_Domain_Value: 32
          Enumerated_Domain_Value_Definition: Fault, sense of displacement uncertain, location inferred
        Enumerated_Domain:
          Enumerated_Domain_Value: 51
          Enumerated_Domain_Value_Definition: Contact, concealed
        Enumerated_Domain:
          Enumerated_Domain_Value: 52
          Enumerated_Domain_Value_Definition:
            Normal fault, concealed; if ARC-PARA1 = 1, then upthrown
            side is on the right from origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 53
          Enumerated_Domain_Value_Definition: Thrust fault, concealed; teeth on right from origin
        Enumerated_Domain:
          Enumerated_Domain_Value: 56
          Enumerated_Domain_Value_Definition: Concealed normal fault, having left lateral oblique slip
        Enumerated_Domain:
          Enumerated_Domain_Value: 57
          Enumerated_Domain_Value_Definition: Concealed right lateral fault
        Enumerated_Domain:
          Enumerated_Domain_Value: 58
          Enumerated_Domain_Value_Definition: Concealed left lateral fault
        Enumerated_Domain:
          Enumerated_Domain_Value: 72
          Enumerated_Domain_Value_Definition:
            Normal fault, location approximate, having right lateral
            oblique slip
        Enumerated_Domain:
          Enumerated_Domain_Value: 74
          Enumerated_Domain_Value_Definition:
            Normal fault, location approximate, having left lateral
            oblique slip
        Enumerated_Domain:
          Enumerated_Domain_Value: 87
          Enumerated_Domain_Value_Definition: Right lateral fault, location certain
        Enumerated_Domain:
          Enumerated_Domain_Value: 88
          Enumerated_Domain_Value_Definition: Right lateral fault, location approximate
        Enumerated_Domain:
          Enumerated_Domain_Value: 90
          Enumerated_Domain_Value_Definition: Left lateral fault, location certain
        Enumerated_Domain:
          Enumerated_Domain_Value: 99
          Enumerated_Domain_Value_Definition: Bounding line of coverage
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: MS 902 Box 25286 Denver Federal Center
        City: Lakewood
        State_or_Province: CO
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: 1-888-ASK-USGS
  Resource_Description: Open-File Report 2005-1341
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Metadata_Reference_Information:
  Metadata_Date: 20050922
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Nora B. Shew
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 4200 University Drive
        City: Anchorage
        State_or_Province: AK
        Postal_Code: 99508
        Country: USA
      Contact_Voice_Telephone: 907-786-7445
      Contact_Electronic_Mail_Address: nshew@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998