Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: National Atlas of the United States
        Publication_Date: 200404
        Title: Volcanoes
        Publication_Information:
          Publication_Place: Reston, VA
          Publisher: National Atlas of the United States
        Online_Linkage: <http://nationalatlas.gov/atlasftp.html?openChapters=chpgeol#chpgeol>
    Description:
      Abstract:
        This map layer includes Holocene volcanoes, which are those thought to be
        active in the last 10,000 years, that are within an extended area of the
        northern hemisphere centered on the United States.  The data are a subset
        of data available from the Global Volcanism Program, Smithsonian
        Institution at <http://www.volcano.si.edu/world/>.  This file is a
        replacement for the November 2001 map layer.
      Purpose:
        These data are intended for geographic display and analysis at the
        national level, and for large regional areas.  The data should be
        displayed and analyzed at scales appropriate for 1:2,000,000-scale data.
        No responsibility is assumed by the National Atlas of the United States in
        the use of these data.
      Supplemental_Information:
        Further information on the Global Volcanism Program of the Smithsonian
        Institution is available at <http://www.volcano.si.edu/>.

        A glossary of volcano terminology is available at
        <http://vulcan.wr.usgs.gov/Glossary/volcano_terminology.html>.
    Time_Period_of_Content:
      Time_Period_Information:
        Single_Date/Time:
          Calendar_Date: 2004
      Currentness_Reference: Publication date
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: Irregular
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: 120
        East_Bounding_Coordinate: 7
        North_Bounding_Coordinate: 90
        South_Bounding_Coordinate: 10

    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: ISO 19115 Topic Category
        Theme_Keyword: geoscientificInformation
      Theme:
        Theme_Keyword_Thesaurus: None
        Theme_Keyword: Volcanoes
        Theme_Keyword: Eruptions
        Theme_Keyword: Calderas
        Theme_Keyword: Cinder cones
        Theme_Keyword: Complex volcanoes
        Theme_Keyword: Crater rows
        Theme_Keyword: Fissure vents
        Theme_Keyword: Fumarole field
        Theme_Keyword: Hydrothermal field
        Theme_Keyword: Lava domes
        Theme_Keyword: Maars
        Theme_Keyword: Pyroclastic cones
        Theme_Keyword: Scoria cones
        Theme_Keyword: Shield volcanoes
        Theme_Keyword: Stratovolcanoes
        Theme_Keyword: Subglacial volcanoes
        Theme_Keyword: Submarine volcanoes
        Theme_Keyword: Tuff cones
        Theme_Keyword: Tuff rings
        Theme_Keyword: Volcanic fields
      Place:
        Place_Keyword_Thesaurus: None
        Place_Keyword: Asia
        Place_Keyword: Atlantic
        Place_Keyword: Canada
        Place_Keyword: Caribbean
        Place_Keyword: Europe
        Place_Keyword: Iceland
        Place_Keyword: Mexico
        Place_Keyword: United States
        Place_Keyword: USA
        Place_Keyword: West Indies

      Place:
        Place_Keyword_Thesaurus:
          U.S. Department of Commerce, 1987, Codes for the Identification of the
          States, the District of Columbia and the Outlying Areas of the United
          States, and Associated Areas (Federal Information Processing Standard
          (FIPS) 5-2): Washington, DC, National Institute of Standards and
          Technology.
        Place_Keyword: Alabama
        Place_Keyword: Alaska
        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: Hawaii
        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
        Place_Keyword: Puerto Rico
        Place_Keyword: U.S. Virgin Islands

    Access_Constraints: None
    Use_Constraints:
      None.  Acknowledgment of the National Atlas of the United States of America
      and the Global Volcanism Program, Smithsonian Institution would be
      appreciated in products derived from these data.
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Gita Urban-Mathieux
          Contact_Organization: National Atlas of the United States
        Contact_Address:
          Address_Type: Mailing and physical address
          Address: 12201 Sunrise Valley Drive
          Address: MS 561
          City: Reston
          State_or_Province: VA
          Postal_Code: 20192
        Contact_Voice_Telephone: 703-648-5175
        Contact_Electronic_Mail_Address: atlasmail@usgs.gov
  Data_Quality_Information:
    Logical_Consistency_Report: No tests for logical consistency were performed on this map layer.
    Completeness_Report:
      This map layer includes all volcanoes thought to be active in the last
      10,000 years in the United States, Canada, Iceland, the West Indies,
      Mexico, Central America, Europe, and eastern Asia.
    Lineage:
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Global Volcanism Program, Smithsonian Institution
            Publication_Date: 2002
            Title: Volcanoes of the World
            Publication_Information:
              Publication_Place: Washington, DC
              Publisher: Smithsonian Institution
            Online_Linkage: <http://www.volcano.si.edu/world/globallists.cfm>
        Type_of_Source_Media: Online
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Single_Date/Time:
              Calendar_Date: 2002
          Source_Currentness_Reference: Publication date
        Source_Citation_Abbreviation: VOL
        Source_Contribution: Spatial and attribute information

      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: National Atlas of the United States
            Publication_Date: 2002
            Title: Shorelines for the National Atlas
            Publication_Information:
              Publication_Place: Reston, VA
              Publisher: National Atlas of the United States
        Type_of_Source_Media: Internal file
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Single_Date/Time:
              Calendar_Date: 2002
          Source_Currentness_Reference: Publication date
        Source_Citation_Abbreviation: SHORE
        Source_Contribution: Geographic extent information

      Process_Step:
        Process_Description:
          The Excel spreadsheet of Volcanoes of the World (VOL) was downloaded
          from the Global Volcanism Program Web site and converted to a dBASE IV
          file.  West longitude and south latitude values were converted to
          negative values.  The points that are within the geographic extent of
          the National Atlas SHORE file were extracted.  The file was loaded into
          ArcView and a shapefile was created.
        Source_Used_Citation_Abbreviation: VOL
        Source_Used_Citation_Abbreviation: SHORE
        Process_Date: 200404

  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method: Vector
    Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: Point
        Point_and_Vector_Object_Count: 722
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Geographic:
        Latitude_Resolution: 0.01
        Longitude_Resolution: 0.01
        Geographic_Coordinate_Units: Decimal degrees
      Geodetic_Model:
        Horizontal_Datum_Name: North American Datum of 1983
        Ellipsoid_Name: GRS1980
        Semi-major_Axis: 6378137
        Denominator_of_Flattening_Ratio: 298.257222

  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: Volcano (described by volcanx020.dbf)
        Entity_Type_Definition:
          A vent or opening in the surface of the Earth through which magma
          erupts; it is also the landform that is constructed by the erupted
          material.  This map layer includes volcanoes thought to be active in the
          last 10,000 years (Holocene).
        Entity_Type_Definition_Source: National Atlas of the United States
      Attribute:
        Attribute_Label: Shape
        Attribute_Definition: The representation of the entity in the data.
        Attribute_Definition_Source: National Atlas of the United States
        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: Volcanx020
        Attribute_Definition: Internal feature number.
        Attribute_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 1
            Range_Domain_Maximum: 722
      Attribute:
        Attribute_Label: Number
        Attribute_Definition:
          The volcano number, based on a system developed by the Catalog of
          Active Volcanoes of the World (CAVW), in the format ####-##-.  The first
          two numerals identify the region, the next two identify the subregion,
          and the last two or three (after the hyphen) identify individual
          volcanoes in that subregion.  When there are three final characters and
          the last character is "=", the number is the same as that found in the
          CAVW; where the last character is "-", the number is not found in the
          CAVW because the region was not numbered in the CAVW or has been
          renumbered for this map layer; where the last character is a number, the
          volcano is in an area included in the CAVW but the number is a new one
          that does not appear in the CAVW.  See
          <http://www.volcano.si.edu/world/globallists.cfm?listpage=summdesc#VolcanoNumber>
          for more information.
        Attribute_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Codeset_Domain:
            Codeset_Name: Catalog of Active Volcanoes of the World (CAVW)
            Codeset_Source: Global Volcanism Program, Smithsonian Institution
      Attribute:
        Attribute_Label: Name
        Attribute_Definition:
          The name of the volcano.  See
          <http://www.volcano.si.edu/world/globallists.cfm?listpage=summdesc#VolcanoName>
          for more information.
        Attribute_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Unrepresentable_Domain: There is no predefined set of valid names.
      Attribute:
        Attribute_Label: Location
        Attribute_Definition: The location of the volcano by geographical and (or) political area.
        Attribute_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Unrepresentable_Domain: There is no predefined set of valid locations.
      Attribute:
        Attribute_Label: Status
        Attribute_Definition: The type of evidence used to determine volcanic activity.
        Attribute_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Anthropology
            Enumerated_Domain_Value_Definition:
              Volcanoes with undated but recent activity described in native
              legends as well as activity dated by buried artifacts.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Dendrochronology
            Enumerated_Domain_Value_Definition:
              Volcanoes for which dating of eruptions is based on the study of
              tree ring growth.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Fumarolic
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity is based on steam and
              volcanic gas, or fume, reaching the surface.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Historical
            Enumerated_Domain_Value_Definition:
              Volcanoes with eruptions documented during or shortly after
              observation.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Holocene
            Enumerated_Domain_Value_Definition:
              Volcanoes without dated products but that are virtually certain to
              have been active in postglacial time.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Holocene?
            Enumerated_Domain_Value_Definition:
              Volcanoes without dated products but where there is some certainty
              that they have been active in postglacial time.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Hot springs
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity is based on a large amount
              of hot water at the surface.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Hydrophonic
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity and dating is based on
              hydrophonic methods that use information recorded under water.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Pleistocene-Fumarolic
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity is based on postglacial
              steam and volcanic gas, or fume, reaching the surface.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Potassium-Argon
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity and dating is based on
              potassium-argon dating methods.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Radiocarbon
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity and dating is based on
              radiocarbon methods.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Seismicity
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity and dating is based on
              seismic activity.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Tephrochronology
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity and dating is based on
              volcanic ash beds and tuffs.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Uncertain
            Enumerated_Domain_Value_Definition:
              Volcanoes with possible Holocene activity, but with questionable
              documentation.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Varve Count
            Enumerated_Domain_Value_Definition:
              Volcanoes for which evidence of activity and dating is based on
              annual layers of sediment.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
      Attribute:
        Attribute_Label: Elev
        Attribute_Definition: The summit elevation in meters above or below sea level.
        Attribute_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: -6000
            Range_Domain_Maximum: 5675
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: -9999
            Enumerated_Domain_Value_Definition: The elevation is unknown.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
      Attribute:
        Attribute_Label: Type
        Attribute_Definition: The shape and size of the volcano (morphology).
        Attribute_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Caldera(s)
            Enumerated_Domain_Value_Definition:
              A large volcanic collapse depression, commonly circular or
              elliptical when seen from above.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Cinder cone(s)
            Enumerated_Domain_Value_Definition:
              A steep-sided volcano formed by the explosive eruption of cinders
              that form around a vent.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Complex volcano(es)
            Enumerated_Domain_Value_Definition:
              A volcano composed of a mixture of landforms.  In most cases, they
              occur because of changes either in eruptive habit or in location of
              the principal vent area.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Compound volcano
            Enumerated_Domain_Value_Definition:
              A volcano composed of a mixture of landforms.  In most cases, they
              occur because of changes either in eruptive habit or in location of
              the principal vent area.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Cones
            Enumerated_Domain_Value_Definition:
              Volcanic cones composed of fragmented material ejected from a
              volcano.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Crater rows
            Enumerated_Domain_Value_Definition:
              An area of congealed lava produced by isolated lava fountains along
              a fissure (volcanic vent).
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Fissure vent(s)
            Enumerated_Domain_Value_Definition:
              Linear volcanic vents through which lava erupts, usually without
              any explosive activity.  The vents are usually a few meters wide and
              may be many kilometers long.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Fumarole field
            Enumerated_Domain_Value_Definition:
              Areas where there are cracks in the ground that allow gases to
              reach the surface.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Hydrothermal field
            Enumerated_Domain_Value_Definition:
              An area where water heated by magma or in association with magma
              reaches the surface.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Lava dome(s)
            Enumerated_Domain_Value_Definition:
              A rounded, steep-sided mount that forms when very viscous lava is
              extruded from a volcanic vent.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Maar(s)
            Enumerated_Domain_Value_Definition:
              Shallow, flat-floored craters formed above diatremes (volcanic vents
              or pipes drilled through rocks by the explosive energy of gas-
              charged magmas) as a result of a violent expansion of magmatic gas
              or steam.  Maars often fill with water to form a lake.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Pyroclastic cone(s)
            Enumerated_Domain_Value_Definition:
              A volcanic cone composed of fragmented material ejected from a
              volcano.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Pyroclastic shield
            Enumerated_Domain_Value_Definition:
              A volcano with long, gentle slopes composed of ejected fragmental
              material.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Scoria cones
            Enumerated_Domain_Value_Definition:
              A steep-sided volcano formed by the explosive eruption of scoria.
              Scoria is formed when blobs of gas-charged lava are thrown into the
              air during an eruption and cool in flight, falling as dark volcanic
              rock containing cavities created by trapped gas bubbles.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Shield volcano(es)
            Enumerated_Domain_Value_Definition:
              A volcano that resembles an inverted warrior's shield, with broad,
              gentle slopes, built by multiple eruptions of fluid basalt lava.
              Basalt lava tends to build enormous, low-angle cones because it
              flows across the ground easily and can form lava tubes that enable
              lava to flow tens of kilometers from an erupting vent with very
              little cooling.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Somma volcano(es)
            Enumerated_Domain_Value_Definition:
              A large volcanic collapse depression that is partially filled by
              a new central cone.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Stratovolcano(es)
            Enumerated_Domain_Value_Definition:
              A steep-sided volcano built by lava flows and tephra deposits.
              Tephra is solid material of all sizes explosively ejected from a
              volcano into the atmosphere.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Stratovolcano ?
            Enumerated_Domain_Value_Definition:
              A steep-sided volcano possibly built by lava flows and tephra
              deposits.  Tephra is solid material of all sizes explosively ejected
              from a volcano into the atmosphere.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Subglacial volcano
            Enumerated_Domain_Value_Definition:
              A volcanic form produced by eruptions beneath a glacier or beneath
              the surface of a lake within a glacier.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Submarine volcano(es)
            Enumerated_Domain_Value_Definition: A volcanic form produced by eruptions in the ocean.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Submarine volcano ?
            Enumerated_Domain_Value_Definition: A possible volcanic form produced by eruptions in the ocean.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Tuff cone(s)
            Enumerated_Domain_Value_Definition:
              A volcanic cone formed by the interaction of basaltic magma and
              water.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Tuff rings
            Enumerated_Domain_Value_Definition:
              Shallow, flat-floored craters formed by the interaction of magma and
              water.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Unknown
            Enumerated_Domain_Value_Definition: The volcano morphology is not known.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Volcanic field
            Enumerated_Domain_Value_Definition: A collection of cinder cones and (or) lava flows.
            Enumerated_Domain_Value_Definition_Source: National Atlas of the United States

      Attribute:
        Attribute_Label: Timeframe
        Attribute_Definition: Age of the volcanic eruption
        Attribute_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: D
            Enumerated_Domain_Value_Definition: Last known eruption B.C. (Holocene)
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: D1
            Enumerated_Domain_Value_Definition: Last known eruption in 1964 or later.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: D2
            Enumerated_Domain_Value_Definition: Last known eruption from 1900-1963, inclusive.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: D3
            Enumerated_Domain_Value_Definition: Last known eruption from 1800-1899, inclusive.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: D4
            Enumerated_Domain_Value_Definition: Last known eruption from 1700-1799, inclusive.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: D5
            Enumerated_Domain_Value_Definition: Last known eruption from 1500-1699, inclusive.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: D6
            Enumerated_Domain_Value_Definition: Last known eruption from A.D. 1-1499, inclusive.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: D7
            Enumerated_Domain_Value_Definition: Last known eruption B.C. (Holocene)
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Q
            Enumerated_Domain_Value_Definition:
              Quaternary eruption(s) with the only known Holocene activity being
              hydrothermal.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: U
            Enumerated_Domain_Value_Definition: Undated, but probable Holocene eruption.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: ?
            Enumerated_Domain_Value_Definition: Uncertain Holocene eruption.
            Enumerated_Domain_Value_Definition_Source: Global Volcanism Program, Smithsonian Institution
      Attribute:
        Attribute_Label: Long
        Attribute_Definition: The volcano longitude as a single value, in decimal degrees (NAD83).
        Attribute_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: -178.794
            Range_Domain_Maximum: 179.580
      Attribute:
        Attribute_Label: Lat
        Attribute_Definition: The volcano latitude as a single value, in decimal degrees (NAD83).
        Attribute_Definition_Source: National Atlas of the United States
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 10.030
            Range_Domain_Maximum: 88.270

  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: Earth Science Information Center, U.S. Geological Survey
        Contact_Address:
          Address_Type: Mailing address
          Address: 507 National Center
          City: Reston
          State_or_Province: VA
          Postal_Code: 20192
        Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747)
        Contact_Voice_Telephone: 703-648-5920
        Contact_Instructions:
          In addition to the address above, there are other ESIC offices
          throughout the country.  A full list of these offices is at
          <http://ask.usgs.gov/esic_index.html>.
    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: ESRI Shapefile
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:
                Network_Resource_Name: <http://nationalatlas.gov/atlasftp.html?openChapters=chpgeol#chpgeol>
      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: SDTS
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:
                Network_Resource_Name: <http://nationalatlas.gov/atlasftp.html?openChapters=chpgeol#chpgeol>
      Fees: There is no charge for the map layer.

  Metadata_Reference_Information:
    Metadata_Date: 20060912
    Metadata_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Gita Urban-Mathieux
          Contact_Organization: National Atlas of the United States
        Contact_Address:
          Address_Type: Mailing and physical address
          Address: 12201 Sunrise Valley Drive
          Address: MS 561
          City: Reston
          State_or_Province: VA
          Postal_Code: 20192
        Contact_Voice_Telephone: 703-648-5175
        Contact_Electronic_Mail_Address: atlasmail@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