Identification_Information:

  Citation:
    Citation_Information:
      Originator: Robert B. Scott
      Originator: Harding, Anne E.
      Publication_Date: 2006
      Title: Geologic Map of the Vigo NE Quadrangle, Lincoln County, Nevada
      Edition: Version 1.0
      Geospatial_Data_Presentation_Form: Map
      Series_Information:
        Series_Name: USGS Scientific Investigations Map
        Issue_Identification: SIM 2892
      Publication_Information:
        Publication_Place: Denver, CO
        Publisher: U.S. Geological Survey
      Online_Linkage: http://pubs.usgs.gov/sim/2006/2892/

  Description:

    Abstract: This map of the Vigo NE quadrangle, Lincoln County, Nevada records the distribution, stratigraphy, and structural relationships of Tertiary intracaldera lavas and tuffs in the southeastern part of the Kane Springs Wash caldera, extracaldera Tertiary and upper Paleozoic rocks, and late Cenozoic surficial deposits both within and outside the caldera.  The alkaline to peralkaline Kane Springs Wash caldera is the youngest (14 Ma) of three chemically related metaluminous to peralkaline calderas (Boulder Canyon caldera, 15 Ma; Narrow Canyon caldera, 16 Ma) of the nested Kane Springs Wash caldera complex.  The chemistry of this caldera complex became progressively more alkalic with time, in contrast to the older calc-alkalic calderas and caldera complexes to the north that migrated progressively southward in eastern Nevada.  The increasingly peralkaline eruptions from the Kane Springs Wash caldera complex reached a climax that was simultaneous with the end of both rapid extension and magmatism in this part of the Basin and Range.  Using the assumption that degree of tilting is related to the degree of extension, the rate of extension increased until the abrupt halt at about 14 Ma.  Silicic volcanism terminated at the Kane Springs Wash caldera followed only by local sporadic basaltic eruptions that ended by about 8 Ma.  The northern boundary of an east-west-trending magmatic corridor appears in the Vigo NE quadrangle south of the Kane Springs Wash caldera.
    Purpose: The purpose of this multipurpose geologic map is to provide geologic information for the public, government agencies, and academic interests.
    Supplemental_Information:
      Arc/Info export files and related files included in this dataset:

      vigonegeo.e00
      vigoneline.e00
      vigonepnt.e00
      vigone_base.tif
      vigone_base.tfw

      Arc/Info shadesets and linesets included:
      color524.shd
      geol_sfo.lin
      geoscamp1.lin



  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2005
    Currentness_Reference: Date of publication

  Status:
    Progress: complete
    Maintenance_and_Update_Frequency: None planned

  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -114.625
      East_Bounding_Coordinate: -114.5
      North_Bounding_Coordinate: 37.25
      South_Bounding_Coordinate: 37.125

  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: AGI Glossary of Geology
      Theme_Keyword: Peralkaline volcanism
      Theme_Keyword: Basin and Range
      Theme_Keyword: Miocene
      Theme_Keyword: extensional tectonism
      Theme_Keyword: magmatic dilation
    Place:
      Place_Keyword_Thesaurus: U.S. Board on Geographic Names
      Place_Keyword: Kane Springs Wash caldera complex
      Place_Keyword: Vigo NE quadrangle
      Place_Keyword: USA
      Place_Keyword: Nevada
      Place_Keyword: Lincoln County
      Place_Keyword: Meadow Valley Mountains

  Access_Constraints: none

  Use_Constraints: none. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Robert B. Scott
        Contact_Organization: U.S. Geological Survey
      Contact_Position: geologist (emeritus)
      Contact_Address:
        Address_Type: Mailing and physical address
        Address: USGS, MS 980, Box 25046, Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: 303-236-1230
      Contact_Electronic_Mail_Address: rbscott@usgs.gov

  Data_Set_Credit: The field assistance by Thomas Rosnovsky is deeply appreciated.  Dwight Schmidt (USGS, emeritus, Denver) provided considerable advice on methods to evaluate basin-fill deposits in Meadow Valley Wash.  Ric Page helped with structural advice dealing with Paleozoic exposures.  Both K-Ar dates by Harold Mehnert (USGS retired) and 40Ar/39Ar dates by Larry Snee (USGS, Denver) were critical for stratigraphic time resolution. The map was reviewed by Chris Fridrich and Ric Page
  Native_Data_Set_Environment:
    SunOS, 5.7, sun4d UNIX
    ARC/INFO version 8.1

  Browse_Graphic:
    Browse_Graphic_File_Name: <http://pubs.usgs.gov/sim/2005/sim2892.pdf
    Browse_Graphic_File_Description: link to graphic
    Browse_Graphic_File_Type: PDF
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Data was entered and checked by the geologist who made the observations.  The attributes of this geospatial data set consist of text identifiers and numeric codes that indicate the identity of the geologic unit or type of geologic feature, and determine how each feature is colored or symbolized.  To check attribute accuracy, a color check plot was visually compared to the geologist's original compilation.  Discrepancies between the digital geospatial dataset and the original analog compilation were corrected as needed.  Machine-created listings of unique attribute values were used to identify spelling errors or other inconsistencies, and corrections were made as needed.  This map has been thoroughly reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature.

  Logical_Consistency_Report: Map elements were visually checked by the author for overshoots, undershoots, duplicate features, polygon attributes, and other errors. Automated (ARC/INFO) routines were also used to check the database for polygon label errors, line or point attribution errors, sliver polygons, dangling arcs, intersection errors, and projection information.  Maps were digitized utilizing the 'heads-up' method by scanning image and registering it to within less than a meter.  The scale of the Vigo NE map is 1:24,000.  The map was reviewed by other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards.
  Completeness_Report: Data are complete: no features were eliminated or generalized at the scale of map compilation (1:24,000)

  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: Use of 1:30,000-scale color aerial photographs; then data transferred to a stable mylar base using PG-2 stereographic plotters allows approximate 10 m horizontal accuracy in location on this 1:24,000-scale map.
  Lineage:
    Process_Step:
      Process_Description: Field work was done in the spring of 1995 and the field data were compiled onto a mylar greenline in the summer of 1995.
      Process_Date: 1995

    Process_Step:
      Process_Description: Digitized by Randy Kuehn in GSMCAD
      Process_Date: 1996
    Process_Step:
      Process_Description: Converted map from GSMCAD to ARC/INFO.  Draft check plots of the geologic map were submitted to Bob Scott on 2002 for corrections.
      Process_Date: 2002
    Process_Step:
      Process_Description:
        First draft of metadata created by ssmith using
        FGDCMETA.AML ver. 1.32 01/11/99 on ARC/INFO data set
        vigone_g
      Process_Date: 2002

    Process_Step:
      Process_Description: The database files, metadata, and check plots were edited by the USGS Central Publications Group, and revisions made to the geospatial database and metadata as needed.
      Process_Date: 2005
    Process_Step:
      Process_Description: The geospatial database files and metadata were quality checked for completeness and consistency.
      Process_Date: 2005
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Transverse Mercator
        Transverse_Mercator:
          Scale_Factor_at_Central_Meridian: .9999
          Longitude_of_Central_Meridian: -115.583
          Latitude_of_Projection_Origin: 0
          False_Easting: 0
          False_Northing: 0
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 1.399124979973
          Ordinate_Resolution: 1.399124979973
        Planar_Distance_Units: Meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1927
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.4
      Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
  Overview_Description:
    Entity_and_Attribute_Overview:

      ---------------------------------------------------------------
      COVERAGE NAME: vigonegeo
      ---------------------------------------------------------------
      DATABASE ITEM STRUCTURE FOR VIGONE_GEOL.PAT:

      COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME     INDEXED?
      1  AREA                   4    12     F      3                        -
      5  PERIMETER              4    12     F      3                        -
      9  VIGONE_G#              4     5     B      -                        -
      13  VIGONE_G-ID           4     5     B      -                        -
      17  UNIT                  10    10    C      -                        -
      27  DESCRIPTION           100   100    C      -    DESC                -
      127  SYMBOL               4     5     B      -    S                   -
      ----------------------------------------------------------------------------------------

      ATTRIBUTE NAMES AND DESCRIPTIONS:

      SYMBOL:        Number given to geological map unit representing a value of color used from shadeset "color524.shd".
      UNIT:          Label given to polygons representing name of geological entities.
      DESCRIPTION    Brief geological explanation of unit.
      -----------------------------------------------------------------------------------------
      Unit:   Description:

      Pkt	Kaibab Limestone and Toroweap Limestone, undivided  (Lower Permian)
      Prb	Permian red beds (Lower Permian)
      QTa	Alluvium and colluvium (early Pleistocene and Pliocene?)
      QTes	Eolian silt (early Pleistocene? and Pliocene?)
      Qae	Alluvium and colluvium (early Holocene and latest Pleistocene)
      Qaj	Alluvium and colluvium of Jumbo Wash (late Pleistocene)
      Qal	Alluvium and colluvium (late Holocene)
      Qaw	Alluvium and colluvium of Willow Spring (middle Pleistocene)
      Qaw/Tas	Alluvium and colluvium of Willow Spring (middle Pleistocene) over Aggradational side-stream fan deposit (Pliocene)
      Qc	Colluvium (Quaternary)
      Qt1	Alluvial and colluvial terrace deposit (middle Pleistocene)
      Qt2	Alluvial and colluvial terrace deposit (late Pleistocene)
      Qt2.5	Alluvial and colluvial terrace deposit (late Pleistocene)
      Qt3	Alluvial and colluvial terrace deposit (early Holocene and latest Pleistocene)
      Tam	Aggradational main-stream fan deposit (Pliocene)
      Tar	Aphyric rhyolitic flows (Miocene)
      Tard	Aphyric rhyolitic dikes (Miocene)
      Tas	Aggradational side-stream fan deposit (Pliocene)
      Tbd	Basaltic dike (Miocene)
      Tbil	Lower basaltic intracaldera flows (Miocene)
      Tbiu	Upper basaltic intracaldera flows (Miocene)
      Tbrd	Biotite-rhyolitic dikes (Miocene)
      Tbrf	Biotite-rhyolitic flows (Miocene)
      Tbt	Bedded tuff (Miocene)
      Tby	Basaltic flows (Miocene)
      Tcb	Bauers Tuff Member of the Condor Canyon Formation (Miocene)
      Tcg	Unnamed cobble conglomerate (Oligocene)
      Tdl	Delamar Lake Tuff (Miocene)
      Tgls	Unnamed gray limestone and pebble conglomerate (Oligocene)
      Tgr	Gray rhyolitic flows (Miocene)
      Th	Hiko Tuff (Miocene)
      Thh	Harmony Hills Tuff (Miocene)
      Tmh	Muddy Creek and Horse Spring Formations (late and middle Miocene)
      Tmh?      Muddy Creek and Horse Spring Formations (late and middle Miocene)
      Tkblc	Comenditic zone of the lower cooling
      Tkblt	Trachytic zone of the lower cooling
      Tkfc	Comenditic zone
      Tkft	Trachytic zone
      Tkg	Grapevine Spring Member
      Tkjc	Comenditic zone
      Tkjt	Trachytic zone
      Tkqr	Quartz-rich rhyolitic ash-flow tuff (Miocene)
      Tkwl	Welded lithic-rich rhyolitic tuff (Miocene)
      Tl	Unnamed limestone (Oligocene)
      Tlc	Leach Canyon Formation (Oligocene)
      Tlpc	Unnamed gray limestone and red pebble conglomerate (Oligocene)
      Tpr	Pumice-rich ash-flow tuff of Narrow Canyon caldera (Miocene)
      Tpt	Precaldera trachyte flow (Miocene)
      Traf	Red ash-flow tuff (Miocene)
      Trd	Rhyolitic dikes (Miocene)
      Trds	Rhyolitic dike swarm (Miocene)
      Trf	Rhyolitic flows (Miocene)
      Trlr	Red-lithic rhyolitic ash-flow tuff (Miocene)
      Trls	Unnamed red limestone (Oligocene)
      Ts	Tuffaceous sandstone (Miocene)
      Tsml	Lower zone of Sunflower Mountain tuff (Miocene)
      Tsmu	Upper zone of Sunflower Mountain tuff (Miocene)
      Tt	Trachytic stock (Miocene)
      Tt1	Unnamed rhyolitic ash-flow tuff (Oligocene)
      Tt2	Unnamed rhyolitic ash-flow tuff (Oligocene)
      Tt3	Unnamed rhyolitic ash-flow tuff (Oligocene)
      Twb	Caldera wall breccia (Miocene)
      Tyt	Yellow ash-flow tuff (Miocene)
      --------------------------------------------------------------------------------------
      DATABASE ITEM STRUCTURE FOR VIGONE_G.AAT:

      COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME     INDEXED?
      1  FNODE#                  4     5     B      -                        -
      5  TNODE#                  4     5     B      -                        -
      9  LPOLY#                  4     5     B      -                        -
      13  RPOLY#                 4     5     B      -                        -
      17  LENGTH                 4    12     F      3                        -
      21  VIGONE_G#              4     5     B      -                        -
      25  VIGONE_G-ID            4     5     B      -                        -
      29  DESCRIPTION           80    80     C      -    DESC                -
      109  SYMBOL                3     3     I      -    S                   -
      112  SYMBOLSET            25    25     C      -                        -
      137  UNIT                  6     6     C      -                        -

      ATTRIBUTE NAMES AND DESCRIPTIONS:

      DESCRIPTION    Brief geological explanation of unit
      SYMBOL:        Number given to geological map unit representing a value of a line used from lineset geol_sfo.lin or geoscamp1.lin
      SYMBOLSET:     Identify name of symbolset
      UNIT:          Name given to lines representing name of geological units

      -----------------------------------------------------------------------------------------
      DESCRIPTION                                                UNIT:

      Section line A - A'
      caldera margin - certain
      caldera margin - queried
      contact - certain
      contact - concealed
      contact - approximately located
      fault - approximately located queried
      fault - certain
      fault - concealed
      fault - inferred
      fault - inferred, queried
      intrusive contact - certain                                  Tard/Traf/Tbd
      low-angle fault
      map boundary
      normal fault - certain
      normal fault - concealed
      normal fault - inferred
      normal fault - inferred, queried
      thrust fault - certain
      thrust fault - inferred
      thrust fault - concealed

      ---------------------------------------------------------------
      COVERAGE NAME: vigoneline
      ---------------------------------------------------------------
      DATABASE ITEM STRUCTURE FOR VIGONE_L.AAT

      COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME     INDEXED?
      1  FNODE#                 4     5     B      -                        -
      5  TNODE#                 4     5     B      -                        -
      9  LPOLY#                 4     5     B      -                        -
      13  RPOLY#                4     5     B      -                        -
      17  LENGTH                4    12     F      3                        -
      21  VIGONE_L#             4     5     B      -                        -
      25  VIGONE_L-ID           4     5     B      -                        -
      29  DESCRIPTION           80    80     C      -    DESC                -
      109  SYMBOL               3     3     I      -    S                   -

      ATTRIBUTE NAMES AND DESCRIPTIONS:

      DESCRIPTION   Brief geologic explanation of type of lines.
      SYMBOL        Number given to geological map unit representing a value of a line used from lineset geol_sfo.lin or geoscamp1.lin
      ---------------------------------------------------------------
      Description

      caldera margin - queried
      caldera margin - concealed


      ---------------------------------------------------------------
      COVERAGE NAME: vigonepnt
      ---------------------------------------------------------------
      DATABASE ITEM STRUCTURE FOR VIGONE_P.PAT

      COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME     INDEXED?
      1  AREA                   4    12     F      3                        -
      5  PERIMETER              4    12     F      3                        -
      9  VIGONE_P#              4     5     B      -                        -
      13  VIGONE_P-ID           4     5     B      -                        -
      17  ROTATION              7     7     I      -    R                   -
      24  INCLINATION           5     5     I      -    I                   -
      29  DESCRIPTION          80    80     C      -    DESC                   -
      109  SYMBOL               3     3     I      -    S                   -

      ATTRIBUTE NAMES AND DESCRIPTIONS:

      ROTATION     Compass direction, in degrees
      INCLINATION  Angel of dip in degrees from horizontal
      DESCRIPTION  Brief geologic explanation of point type
      SYMBOL       Numeric value given to each point

      --------------------------------------------------------------
      DESCRIPTION

      Prospect pit
      fault - showing dip
      flow lineation direction-showing bearing and plunge
      horizontal bedding
      inclined bedding-showing strike and dip
      inclined flow foliation-showing strike and dip
      lineation-showing bearing and plunge
      vertical foliation - showing strike
      dip of contact
    Entity_and_Attribute_Detail_Citation: none

Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address:
          Central Publications Group
          U.S. Geological Survey
          MS 902, Box 25046 DFC

        City: Denver
        State_or_Province: Colorado
        Postal_Code: 80225-0046
        Country: USA
      Contact_Voice_Telephone: 303-236-5486

  Distribution_Liability:

    Although these data have been used by the U.S. Geological Survey,
    U.S. Department of the Interior, no warranty expressed or implied
    is made by the U.S. Geological Survey as to the accuracy of the
    data.

    The act of distribution shall not constitute any such warranty,
    and no responsibility is assumed by the U.S. Geological Survey in
    the use of this data, software, or related materials.

  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARCE, SHP
        Format_Version_Number: 8.1
        File_Decompression_Technique: GZIP compressed TAR file (Unix), ZIP archive (Windows).
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://pubs.usgs.gov/sim/2006/2892
    Fees: None
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address:
          USGS Information Services
          Denver Federal Center
          Box 25286
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: 1-888-ASK-USGS
  Resource_Description: Scientific Investigations Map 2892 (Map-on-Demand)
  Distribution_Liability: none
  Standard_Order_Process:
    Non-digital_Form: Available as one printed sheet and a pamphlet.  Order from USGS at the address listed above or see <http://rmmcweb.cr.usgs.gov/public/mod/order.html> for more ordering information.
    Fees: for current charges please see http://rmmcweb.cr.usgs.gov/public/mod/order.html
Metadata_Reference_Information:
  Metadata_Date: 2003
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Kenzie J. Turner
      Contact_Address:
        Address_Type: mailing address
        Address:
          USGS Denver Federal Center
          MS 980
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: 303-236-4610
      Contact_Electronic_Mail_Address: kturner@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2")
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Access_Constraints: none
  Metadata_Use_Constraints: none
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector