Identification_Information:
  Citation:
    Citation_Information:
      Originator: David R. Bedford
      Originator: David M. Miller
      Originator: Geoffrey A. Phelps
      Publication_Date: 2010
      Title: Surficial Geologic Map of the Amboy 30' x 60' Quadrangle, San Bernardino County, California
      Edition: 1.1
      Geospatial_Data_Presentation_Form: vector digital data
      Series_Information:
        Series_Name: U.S. Geological Survey Scientific Investigations Map
        Issue_Identification: SIM 3109
      Publication_Information:
        Publication_Place: Menlo Park, CA
        Publisher: U.S. Geological Survey
      Online_Linkage: http://pubs.usgs.gov/sim/3109
  Description:
    Abstract:
      This report supercedes a previously published report, Open-File Report 06-1165.  The intent of this version is to present the map at a print scale of 1:100,000 and to improve database usability.  The map data has been generalized to remove small polygons to enable ease of use in print form.  Some new faults were added in the far northwest corner of the map area to match with data from surrounding quadrangle maps.  The database is also present as an ArcGIS Personal Geodatabase, and the data structuring has been modified to facilitate ease of use in queries.   In some cases, geologic unit labels have been truncated to only include the two primary deposit types, and there are no new geologic units.  

      The surficial geologic map database of the Amboy 30' x 60' quadrangle presents characteristics and physical properties of surficial materials for an area approximately 5,000 sq km in the eastern Mojave Desert of California at a scale of 1:100,000.  This map consists of new surficial mapping conducted between 2000 and 2005 in the area, as well as compilations of previous bedrock mapping simplified to emphasize lithologic source material.  Surficial geologic units are mapped and described based on depositional process and age categories that reflect the mode of deposition, pedogenic effects occurring postdeposition, and, where appropriate, the lithologic nature of the material.

      The physical properties recorded in the database focus on those that drive hydrologic, biologic, and physical processes such as particle size distribution (PSD) and bulk density.  This database is distributed with point data, representing locations of both laboratory determined physical properties and semiquantitative field-based information.

      This database structure is intended to provide easy access to information that is traditionally stored in complex geologic labels.  For example, geologic lines are typically attributed with a string "fault, approximately located, queried."  This attribute in fact stores three types of information:  what the feature is, its locational accuracy, and how well understood the feature is.  Similarly, geologic unit labels such as "Qya/Qia?" encode three pieces of information:  two unit types (Qya, Qia), the relation to each other ("/" meaning that unit Qya overlies unit Qia), and an identifier that the unit call is relatively uncertain (the question mark).  We have included a new database structure that explicitly separates these types of information and, in the case of geologic unit polygons, the original map unit designation (the concatenation of all three types of information).

      For geologic lines, we have separated the original attribute field "ltype" into three fields:
      Ltype:  the type of line feature: this is either fault or contact.
      Loc_accuracy: the locational accuracy of the feature.  For this report these values include: "approximate", "certain", "concealed", "eolian gradational" and "gradational".  These values are meant to correspond to traditional assessments of locational accuracy for geologic maps at the map scale.
      Certainty:  the overall scientific certainty of the feature"s existence and the certainty of the nature of the feature.  Values included are: "certain", "queried", and "uncertain."  Certain features have been observed, and their nature is well understood.  Queried features are the most uncertain features and they are often placed where features would be buried or would likely exist.  Uncertain features can be through of as inferred features, where there is some evidence to their existence, but they have not been directly observed, or there is only a small amount of evidence suggesting their existence.

      For geologic unit labels, we have kept the original attribute field "ptype" and included three other fields:
      	Ptype:  a concatenation of the different components of a geologic unit designation.
      	Map_Unit1:  the primary map unit, which consists of only one unit designator (Qia or Qya).  This unit can include a queried symbol (?) to designate that the map unit is relatively uncertain.
      	Operator1:  this attribute is used when there is a secondary map unit and is used to designate the relation between the two units.  Common values are "+", "/", and "-".  A "+" value designates that the polygon consists of both map_unit1 and map_unit2 deposits, and that the unit in map_unit1 is more abundant than map_unit2.  A "/" value denotes that the unit in map_unit1 overlies the unit in map_unit2.  A value of "-" is used in the context of pediments.  In this context, the unit in map_unit1 describes the type of pediment, and the unit in map_unit2 describes the lithology of the pediment.
      	Map_unit2: the secondary map unit that is typically a less abundant map unit, is a basal (buried) unit, or in the case of hillslope deposits, denotes the lithology of the bedrock material.

      The database is distributed in 3 parts: spatial map-based data, documentation, and printable map graphics of the database.  Spatial data is distributed as an ArcGIS Personal Geodatabse file.  Documentation includes an accompanying pamphlet, which provides a discussion of the surficial geology.  The documentation also includes this file, FGDC metadata for the spatial map information, which describes the format and content of the map data.  Map graphics files are distributed as Postscript and Adobe Portable Document Format (PDF) files and are appropriate for representing a view of the spatial database at the mapped scale.
    Purpose: Describe the surficial materials in the mapped area
    Supplemental_Information:
      Geologic polygon (map unit) types are stored in two ways.  The PTYPE field of the polgyon feature class "Amb_geo_polygon" contains the map unit label as depicted on a traditional geologic map.  This feature class also contains attributes that devolve the "PTYPE" field into primary and secondary deposit types, and the nature of the relation between the two units.  Note that the PTYPE field is a concatenation of the Map_Unit1, Operator1, and Map_Unit2 fields

      Geologic line types (contact, fault) are stored in the Ltype field of the arc feature class "amb_geo_arc."  This feature class also contains attributes that describe its certainty.  "Loc_accuracy" describes how well located the arc/line is on the map, and "Certainty" describes the overall scientific understanding of the feature.  The Certainty attribute is most commonly used with faults.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 1994-2007
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -116.0
      East_Bounding_Coordinate: -115.0
      North_Bounding_Coordinate: 35.0
      South_Bounding_Coordinate: 34.5
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: This Report
      Theme_Keyword: Mojave Desert
      Theme_Keyword: Surficial Geology
  Access_Constraints: None
  Use_Constraints: Uses of this digital geologic map should not violate the spatial resolution of the data.  Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: David R. Bedford
        Contact_Organization: U.S. Geological Survey
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 345 Middlefield Rd MS973
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025
        Country: USA
      Contact_Voice_Telephone: 650-329-5272
      Contact_Facsimile_Telephone: 650-329-4936
      Contact_Electronic_Mail_Address: dbedford@usgs.gov
  Browse_Graphic:
    Browse_Graphic_File_Name: amb_browse.jpg
    Browse_Graphic_File_Description: Small browse graphic of the Amboy 1:100,000 scale quadrangle
    Browse_Graphic_File_Type: JPEG
  Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 8.2.0.700
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: map units, contacts, or faults are attributed with an appended "?" if their designation is assumed and not definite.
  Logical_Consistency_Report: Geologic lines attributed as a "contact" do not separate geologic map units of the same type.  We also ensured that lines attributed as a "contact" only enclose map unit polygons, and as such are not "dangles".  All geologic polygons are attributed with map unit designators found in the Description of Map Units
  Completeness_Report: Complete for publication standards
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        Accuracy of line locations is carried in the database in the "Loc_accuracy" field and displayed by different line symbols (solid vs. dashed lines) in the cartographic display.

        Lines attributed as "certain" and displayed as solid lines represent contacts and faults located with an accuracy greater than 10 m and commonly greater than 5 m.
        Lines attributed as "approximate" and displayed as dashed lines are located with an accuracy of 10 to 30 m.
        Lines attributed as "gradational" are displayed as vertical ticks, represent interleaving of sediments, and are located with an accuracy of 30-100 m.
        Lines attributed as "eolian gradational" are displayed as spaced vertical ticks represent smooth gradations in characteristics such as percentage of eolian sand.  In general, these gradations take place over distances of 50 to 150 m.
        Lines attributed as "concealed" are displayed as dotted lines are often inferred from nearby geologic relations, and  are located with an average accuracy of 20-75 m.
      Quantitative_Horizontal_Positional_Accuracy_Assessment:
        Horizontal_Positional_Accuracy_Value: certain
        Horizontal_Positional_Accuracy_Explanation: represent contacts and faults located with an accuracy greater than 10 m and commonly greater than 5 m.
      Quantitative_Horizontal_Positional_Accuracy_Assessment:
        Horizontal_Positional_Accuracy_Value: approximate
        Horizontal_Positional_Accuracy_Explanation: lines are located with an accuracy of 10 to 30 m.
      Quantitative_Horizontal_Positional_Accuracy_Assessment:
        Horizontal_Positional_Accuracy_Value: gradational
        Horizontal_Positional_Accuracy_Explanation: located with an accuracy of 30-100 m.
      Quantitative_Horizontal_Positional_Accuracy_Assessment:
        Horizontal_Positional_Accuracy_Value: eolian gradational
        Horizontal_Positional_Accuracy_Explanation: lines with gradations located over distances of 50 to 150 m.
      Quantitative_Horizontal_Positional_Accuracy_Assessment:
        Horizontal_Positional_Accuracy_Value: concealed
        Horizontal_Positional_Accuracy_Explanation: located with an average accuracy of 20-75 m.
  Lineage:
    Process_Step:
      Process_Description: Map generalization was performed in order to better represent the map in printed form.  Two forms of manual generalization were performed.  In most cases, small polygons have been deleted.  In other cases, groups of polygons of the same type separated by small distances have been merged into one larger polygon.  Users who require more detailed information for spatial analysis or other uses should consult the original Open-File Report, OF 2006-1165.
      Process_Date: 2007
    Process_Step:
      Process_Description:
        The new database structure is intended to provide easy access to what is traditionally stored in complex geologic labels.  For example, geologic lines are typically attributed with a string "fault, approximately located, queried."  This attribute in fact stores three types of information:  what the feature is, its locational accuracy, and how well understood the feature is.  Similarly for geologic unit labels such as "Qya/Qia?" encodes three pieces of information:  two unit types (Qya, Qia), the relationship to each other ("/" meaning that unit Qya overlies unit Qia), and an identifier that the unit call is relatively uncertain (the question mark).  We have included a new database structure that explicitly separates these types of information and, in the case of geologic unit polygons, the original map unit designation (the concatenation of all three types of information.
        For geologic lines, we have separated the original attribute field "LTYPE" into three fields:
        LTYPE:  the type of line feature:  in this report, this is either fault or contact.
        Loc_accuracy: the locational accuracy of the feature.  For this report these values include: "approximate", "certain", "concealed", "eolian gradational" and "gradational".  The values are meant to correspond to traditional assessments of locational accuracy for geologic maps at the map scale.
        Certainty:  the overall scientific certainty of the feature"s existence and the certainty of the nature of the feature.  For this report, values included are: "certain", "queried", and "uncertain."  Certain features have been observed, and their nature is well understood.  Queried features are the most uncertain features and they are often placed where features would be buried or would likely exist.  Uncertain features can be thought of as inferred features, where there is some evidence to their existence, but they have not been directly observed or there is only a small amount of evidence suggesting their existence.
        For  geologic unit labels, we have kept the original attribute field "ptype" and included three other fields:
        Ptype:  a concatenation of the different components of a geologic unit designation.
        Map_Unit1:  the primary map unit, which consists of only one unit designator (e.g. Qia or Qya).  This unit can include a queried symbol (?) to designate that the map unit is relatively uncertain.
        Operator1:  this attribute is used when there is a secondary map unit and is used to designate the relationship between the two units.  Common values are "+", "/",  and "-".  A "+" value designates that the polygon consists of both map_unit1 and map_unit2 deposits, and that the unit in map_unit1 is more abundant that map_unit2.  A "/" value denotes that the unit in map_unit1 overlies the unit in map_unit2.  A "-" value is used in this report in the context of pediments.  In this context, the unit in map_unit1 describes the type of pediment, and the unit in map_unit2 describes the lithology of the pediment.
        Map_unit2: the secondary map unit that is typically a less abundant map unit, is a basal (buried) unit, or in the case of hillslope deposits denotes the lithology of the bedrock material.
      Process_Date: 2007
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: String
      Point_and_Vector_Object_Count: 8289
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 2363
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Entity point
      Point_and_Vector_Object_Count: 1626
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 2363
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 11
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.999600
            Longitude_of_Central_Meridian: -117.000000
            Latitude_of_Projection_Origin: 0.000000
            False_Easting: 500000.000000
            False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.000860
          Ordinate_Resolution: 0.000860
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: amb_geo_arc
      Entity_Type_Definition: Attributes for line feature class "amb_geo_arc" (Faults, depositional contacts, and rock units)
      Entity_Type_Definition_Source: This Report
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: LTYPE
      Attribute_Definition: Geologic Line types (contact, fault)
      Attribute_Definition_Source: This Report
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: contact
          Enumerated_Domain_Value_Definition: Boundary between two mapped units that is depositional or erosional in nature
          Enumerated_Domain_Value_Definition_Source: This Report
        Enumerated_Domain:
          Enumerated_Domain_Value: fault
          Enumerated_Domain_Value_Definition: Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset
          Enumerated_Domain_Value_Definition_Source: This report
        Enumerated_Domain:
          Enumerated_Domain_Value: map boundary
          Enumerated_Domain_Value_Definition: Edge of mapped area, used to bound polygons at the edge of the map database.
          Enumerated_Domain_Value_Definition_Source: This report
    Attribute:
      Attribute_Label: Shape_Length
      Attribute_Definition: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: Loc_accuracy
      Attribute_Definition: Qualitatively describes the locational accuracy of the feature.
      Attribute_Definition_Source: This Report
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: approximate
          Enumerated_Domain_Value_Definition: The location is not precise
          Enumerated_Domain_Value_Definition_Source: This Report
        Enumerated_Domain:
          Enumerated_Domain_Value: certain
          Enumerated_Domain_Value_Definition: The location is precise
          Enumerated_Domain_Value_Definition_Source: This Report
        Enumerated_Domain:
          Enumerated_Domain_Value: concealed
          Enumerated_Domain_Value_Definition: The location is approximate and buried
          Enumerated_Domain_Value_Definition_Source: This Report
        Enumerated_Domain:
          Enumerated_Domain_Value: eolian gradational
          Enumerated_Domain_Value_Definition: The location is gradational over relatively large distances due to eolian processes
          Enumerated_Domain_Value_Definition_Source: This Report
        Enumerated_Domain:
          Enumerated_Domain_Value: gradational
          Enumerated_Domain_Value_Definition: The location is gradational over several 10"s to 100"s of meters
          Enumerated_Domain_Value_Definition_Source: This Report
    Attribute:
      Attribute_Label: Certainty
      Attribute_Definition_Source: This Report
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: certain
          Enumerated_Domain_Value_Definition: The feature has been observed
          Enumerated_Domain_Value_Definition_Source: This Report
        Enumerated_Domain:
          Enumerated_Domain_Value: queried
          Enumerated_Domain_Value_Definition: The feature has not been observed but there is some evidence for its existence
          Enumerated_Domain_Value_Definition_Source: This Report
        Enumerated_Domain:
          Enumerated_Domain_Value: uncertain
          Enumerated_Domain_Value_Definition: The feature has been observed but there is some uncertainty about its nature
          Enumerated_Domain_Value_Definition_Source: This Report
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: amb_geo_polygon
      Entity_Type_Definition: Attributes for polygon feature class "amb_geo_polygon" (Faults, depositional contacts, and rock units)
      Entity_Type_Definition_Source: This Report
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: Shape_AREA
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: PTYPE
      Attribute_Definition: Geologic polygon (map unit) designation
      Attribute_Definition_Source: This report
      Attribute_Domain_Values:
        Unrepresentable_Domain: Represent conatenations of Map_Unit1, Operator1, and Map_Unit2 fields.  See their enumerated domains and associated text for detailed descriptions
    Attribute:
      Attribute_Label: Map_Unit1
      Attribute_Definition: The primary (dominant) map unit
      Attribute_Definition_Source: This Report
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: QToa
          Enumerated_Domain_Value_Definition: Extremely old alluvial fan deposit  (early Pleistocene to Pliocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qaa
          Enumerated_Domain_Value_Definition: Active alluvial fan deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qaag
          Enumerated_Domain_Value_Definition: Active alluvial fan composed predominately of clasts from granitic source that weathers to grus
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qae
          Enumerated_Domain_Value_Definition: Active eolian sand deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qaed
          Enumerated_Domain_Value_Definition: Active eolian sand dune deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qaw
          Enumerated_Domain_Value_Definition: Active wash deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qawg
          Enumerated_Domain_Value_Definition: Active wash deposit made up of clasts from granitic source materials that weather to grus (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qha
          Enumerated_Domain_Value_Definition: Abundant hillslope deposits  (Holocene and Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qhs
          Enumerated_Domain_Value_Definition: Sparse hillslope deposits  (Holocene and Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qia
          Enumerated_Domain_Value_Definition: Intermediate alluvial fan deposit (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiad
          Enumerated_Domain_Value_Definition: Old alluvial fan deposit dominated by debris flows of bouldery, matrix-supported material (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiag
          Enumerated_Domain_Value_Definition: Intermediate alluvial fan deposit made up of clasts from granitic source that weathers to grus (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiao
          Enumerated_Domain_Value_Definition: Older intermediate alluvial deposits (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiaog
          Enumerated_Domain_Value_Definition: older intermediate deposits made up of clasts from granitic sources that weather to grus (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qie
          Enumerated_Domain_Value_Definition: Intermediate eolian sand deposit  (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qimc
          Enumerated_Domain_Value_Definition: Intermediate mass-movement colluvial deposits  (Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiw
          Enumerated_Domain_Value_Definition: Intermediate wash deposit  (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qmc
          Enumerated_Domain_Value_Definition: Mass-movement colluvial deposits, undivided  (Holocene and Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qoa
          Enumerated_Domain_Value_Definition: Old alluvial fan deposit (middle to early Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qoad
          Enumerated_Domain_Value_Definition: Old alluvial deposits dominated by debris flows of bouldery, matrix-supported material (middle to early Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qoag
          Enumerated_Domain_Value_Definition: Old alluvial fan made up of clasts from granitic source that weathers to grus (middle to early Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qpd
          Enumerated_Domain_Value_Definition: Deeply dissected pediment
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qpi
          Enumerated_Domain_Value_Definition: Incised pediment
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qpv
          Enumerated_Domain_Value_Definition: Veneered pediment
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qya
          Enumerated_Domain_Value_Definition: Young alluvial fan deposit (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyad
          Enumerated_Domain_Value_Definition: Young alluvial deposits dominated by debris flows of bouldery, matrix-supported material   (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyae
          Enumerated_Domain_Value_Definition: Young mixed alluvial and eolian sand deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyaf
          Enumerated_Domain_Value_Definition: Young alluvial deposits dominated by fine-grained sediments in the extreme distal portions of fans (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyag
          Enumerated_Domain_Value_Definition: Young alluvial fan deposits made up of clasts from granitic source that weathers to grus (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyao
          Enumerated_Domain_Value_Definition: Older young alluvial deposits (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyay
          Enumerated_Domain_Value_Definition: Younger alluvial deposits, mapped as areas that lack deposits of unit Qyao (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qye
          Enumerated_Domain_Value_Definition: Young eolian sand deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyea
          Enumerated_Domain_Value_Definition: Young mixed eolian sand and alluvial deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyed
          Enumerated_Domain_Value_Definition: Young eolian sand dune deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyer
          Enumerated_Domain_Value_Definition: Young eolian sand ramp deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyes
          Enumerated_Domain_Value_Definition: Young eolian sand sheet deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyg
          Enumerated_Domain_Value_Definition: Young groundwater discharge deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyp
          Enumerated_Domain_Value_Definition: Young playa deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qypf
          Enumerated_Domain_Value_Definition: Young playa fringe deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyv
          Enumerated_Domain_Value_Definition: Young valley-axis deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyw
          Enumerated_Domain_Value_Definition: Young wash deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qywg
          Enumerated_Domain_Value_Definition: Young wash deposits made up of clasts from granitic source that weathers to grus (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: ml
          Enumerated_Domain_Value_Definition: Made land
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
    Attribute:
      Attribute_Label: Operator1
      Attribute_Definition: this attribute is used when there is a secondary map unit and is used to designate the relationship between the two units.  Common values are "+", "/",  and "-".  A "+" value designates that the polygon consists of both map_unit1 and map_unit2 deposits, and that the unit in map_unit1 is more abundant that map_unit2.  A "/" value denotes that the unit in map_unit1 overlies the unit in map_unit2.  A "-" value is used in this report in the context of pediments.  In this context, the unit in map_unit1 describes the type of pediment, and the unit in map_unit2 describes the lithology of the pediment.
      Attribute_Definition_Source: This Report
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: +
          Enumerated_Domain_Value_Definition: Denotes a mapped area  made up of deposits too small to show individually (representing more than 20 percent of the area) are indicated by deposits separated by a plus sign (+), with the most common deposit listed first.  Thus, Qya + Qia indicates an area with both Qya and Qia deposits and associated surfaces, and that Qya is more common than Qia; other deposits in the area compose less than 20 percent.
          Enumerated_Domain_Value_Definition_Source: This report
        Enumerated_Domain:
          Enumerated_Domain_Value: -
          Enumerated_Domain_Value_Definition: Used to denote lithology of hillslope and pediment landforms.  The lithology is contained in the Map_Unit2 field
          Enumerated_Domain_Value_Definition_Source: This report
        Enumerated_Domain:
          Enumerated_Domain_Value: /
          Enumerated_Domain_Value_Definition: Denotes areas mapped as a thin veneer deposit of unit Map_Unit1, overlying  a deposit of map in Map_unit2.   The younger, or overlying, unit is indicated first.  Thus, Qya/Qoa indicates an area where a veneer of young alluvial fan deposits overlies old alluvial fan deposits and Qya/fpg indicates an area where a veneer of young alluvial fan deposits overlies felsic grussy granite.
          Enumerated_Domain_Value_Definition_Source: This report
    Attribute:
      Attribute_Label: Map_Unit2
      Attribute_Definition: The secondary map unit
      Attribute_Definition_Source: This Report
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: QTmv
          Enumerated_Domain_Value_Definition: Mafic volcanic rocks (Quaternary to Tertiary)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: QToa
          Enumerated_Domain_Value_Definition: Extremely old alluvial fan deposit  (early Pleistocene to Pliocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qaa
          Enumerated_Domain_Value_Definition: Active alluvial fan deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qaag
          Enumerated_Domain_Value_Definition: Active alluvial fan composed predominately of clasts from granitic source that weathers to grus (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qae
          Enumerated_Domain_Value_Definition: Active eolian sand deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qaed
          Enumerated_Domain_Value_Definition: Active eolian sand dune deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qav
          Enumerated_Domain_Value_Definition: Active valley-axis deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qaw
          Enumerated_Domain_Value_Definition: Active wash deposit  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qawg
          Enumerated_Domain_Value_Definition: Active wash deposits made up of clasts from granitic source materials that weather to grus (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qia
          Enumerated_Domain_Value_Definition: Intermediate alluvial fan deposit (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiae
          Enumerated_Domain_Value_Definition: Intermediate mixed alluvial and eolian sand deposit  (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiag
          Enumerated_Domain_Value_Definition: Intermediate alluvial fan made up of clasts from granitic source that weathers to grus (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiea
          Enumerated_Domain_Value_Definition: Intermediate mixed eolian and alluvial sand deposit (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qiw
          Enumerated_Domain_Value_Definition: Intermediate wash deposit  (late to middle Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qmv
          Enumerated_Domain_Value_Definition: Mafic volcanic rocks (Quaternary)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qoa
          Enumerated_Domain_Value_Definition: Old alluvial fan deposit (middle to early Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qoag
          Enumerated_Domain_Value_Definition: Old alluvial fan made up of clasts from granitic source that weathers to grus (middle to early Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qya
          Enumerated_Domain_Value_Definition: Young alluvial fan deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyae
          Enumerated_Domain_Value_Definition: Young mixed alluvial and eolian sand deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyag
          Enumerated_Domain_Value_Definition: Young alluvial fan deposits made up of clasts from granitic source that weathers to grus (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyao
          Enumerated_Domain_Value_Definition: Older young alluvial deposits (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qye
          Enumerated_Domain_Value_Definition: Young eolian sand deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyea
          Enumerated_Domain_Value_Definition: Young mixed eolian sand and alluvial deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyed
          Enumerated_Domain_Value_Definition: Young eolian sand dune deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyg
          Enumerated_Domain_Value_Definition: Young groundwater discharge deposit  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qymc
          Enumerated_Domain_Value_Definition: Young mass-movement colluvial deposits  (Holocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyvo
          Enumerated_Domain_Value_Definition: Older valley-axis deposits  (Holocene and late Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qyw
          Enumerated_Domain_Value_Definition: Young wash deposit  (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: Qywg
          Enumerated_Domain_Value_Definition: Young wash deposit  made up of clasts from granitic source that weathers to grus (Holocene and latest Pleistocene)
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: ca
          Enumerated_Domain_Value_Definition: Carbonate rocks
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: fp
          Enumerated_Domain_Value_Definition: Felsic plutonic rocks
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: fpg
          Enumerated_Domain_Value_Definition: Felsic plutonic rocks that weather to produce grus
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: fv
          Enumerated_Domain_Value_Definition: Felsic volcanic rocks
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: mp
          Enumerated_Domain_Value_Definition: Mafic plutonic rocks
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: mr
          Enumerated_Domain_Value_Definition: Metamorphic rocks
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: mv
          Enumerated_Domain_Value_Definition: Mafic volcanic rocks
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: pc
          Enumerated_Domain_Value_Definition: Partly consolidated rocks
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
        Enumerated_Domain:
          Enumerated_Domain_Value: sl
          Enumerated_Domain_Value_Definition: Siliciclastic rocks
          Enumerated_Domain_Value_Definition_Source: This report, see associated pamphlet for detailed unit descriptions
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: Amboy_field_observations
      Entity_Type_Definition: Locations, map unit types, and nature of other observations for the map area
      Entity_Type_Definition_Source: This report, map units may represent those found in Bedford, 2003, and others (see map text)
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: UTM_E
      Attribute_Definition: UTM (NAD83 Zone 11N) easting (X) coordinate
      Attribute_Definition_Source: This report
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy: handheld GPS
    Attribute:
      Attribute_Label: UTM_N
      Attribute_Definition: UTM (NAD83 Zone 11N) northing(Y) coordinate
      Attribute_Definition_Source: This report
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy: Handheld GPS
    Attribute:
      Attribute_Label: Date
      Attribute_Definition: Date of observation
      Attribute_Definition_Source: This report
    Attribute:
      Attribute_Label: StationID
      Attribute_Definition: Text of the Author"s station identification corresponding to notes
      Attribute_Definition_Source: This Report
    Attribute:
      Attribute_Label: Last_Name
      Attribute_Definition: The last name of the Authors making the observation
      Attribute_Definition_Source: This report
    Attribute:
      Attribute_Label: map_unit
      Attribute_Definition: The Author"s free-form map unit designation made in the field (ptype in the geologic map) which may not correspond to exact map units in the 1:100,000 scale map classification.  Units may correspond to more detailed map units in related 1:24,000 maps.  Users encouraged to use descriptions and correlations in Yount, J.C., Schermer, E.R., Felger, T.J., Miller, D.M., and Stephens, K.A., 1994, Preliminary geologic map of Fort Irwin basin, north-central Mojave Desert, California: U. S. Geological Survey Open-File Report 94-173, scale 1:24,000, 27 p. and Menges, C.M., Taylor, E.M., Workman, J.B., and Jayko, A.S., 2001, Regional surficial-deposit mapping in the Death Valley area of California and Nevada in support of ground-water modeling, in Machette, M.N., Johnson, M., and Slate, J.L., eds., Quaternary and late Pliocene geology of the Death Valley region; recent observations on tectonics, stratigraphy, and lake cycles, U.S. Geological Survey Open-File Report OF 01-0051, p. 151-166.
      Attribute_Definition_Source: This report
    Attribute:
      Attribute_Label: BD_Moist
      Attribute_Definition: Boolean (Y or N) for presence or absence of a Bulk Density/Field Moisture determination
      Attribute_Definition_Source: This Report
    Attribute:
      Attribute_Label: Chronology
      Attribute_Definition: Boolean (Y or N) for presence or absence of a geochronology sample
      Attribute_Definition_Source: This report
    Attribute:
      Attribute_Label: Lithology
      Attribute_Definition: Boolean (Y or N) for presence or absence of a parent lithology determination(s)
      Attribute_Definition_Source: This report
    Attribute:
      Attribute_Label: PSA
      Attribute_Definition: Boolean (Y or N) for presence or absence of a particle size analysis (texture) sample
      Attribute_Definition_Source: This report
    Attribute:
      Attribute_Label: Photos
      Attribute_Definition: Boolean (Y or N) for presence or absence of digital photograph(s)
      Attribute_Definition_Source: This report
    Attribute:
      Attribute_Label: Surface_desc
      Attribute_Definition: Boolean (Y or N) for presence or absence of surface description (clast size, lichen, eolian processes)
      Attribute_Definition_Source: This Report
    Attribute:
      Attribute_Label: Vegetation
      Attribute_Definition: Boolean (Y or N) for presence or absence of vegetation measurements
      Attribute_Definition_Source: This report
  Overview_Description:
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U. S. Geological Survey
        Contact_Person: USGS Information Services
      Contact_Address:
        Address_Type: mailing address
        Address: Box 25286 Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: USA
      Contact_Voice_Telephone: 1-888-ASK-USGS
      Contact_Electronic_Mail_Address: infoservices@usgs.gov
  Resource_Description: This Report is primarily available through the web.  Contact USGS Information Services, above, to purchase a plot of the report.
  Distribution_Liability:
    Use of the database beyond the intended map scale (1:100,000) is not recommended.

    Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

    This database has been approved for release and publication by the Director of the USGS.  Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review.
    Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Version_Number: 9.3
        Format_Specification: ArcGIS 9.3 Personal Geodatabase in MS Access format
        Transfer_Size: 4.484
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://pubs.usgs.gov/sim/3109
    Ordering_Instructions:
      Obtaining the Digital Database and Plotfile Packages

      The digital data can be obtained from the publication web page

      To obtain files of database or plot file packages from the USGS web pages:
      The direct URL to the web page for this report is:
      http://pubs.usgs.gov/sim/3109
Metadata_Reference_Information:
  Metadata_Date: 20060630
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: David R. Bedford
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 345 Middlefield Rd MS973
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025
        Country: USA
      Contact_Voice_Telephone: 650-329-5272
      Contact_Facsimile_Telephone: 650-329-4936
      Contact_Electronic_Mail_Address: dbedford@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile