Snake/Salt River Basin Plan - Faults

Metadata also available as

Frequently-anticipated questions:

What does this data set describe?
    Title: Snake/Salt River Basin Plan - Faults
    Abstract:
    Data was digitized from original scribe sheets used to prepare the published Geologic Map of Wyoming (Love and Christiansen, 1985), consequently at a 1:500,000 scale.

  1. How should this data set be cited?

    U.S. Geological Survey, 1994, Snake/Salt River Basin Plan - Faults: U.S. Geological Survey, Denver, CO.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -111.045865
    East_Bounding_Coordinate: -109.822637
    North_Bounding_Coordinate: 44.489660
    South_Bounding_Coordinate: 42.499463

  3. What does it look like?

    <URL:http://www.sdvc.uwyo.edu/clearinghouse/images/faults.jpg> (GIF)
    Faults and Dikes

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 1985
    Currentness_Reference: date of publication

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • String (2305)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?

    faults_ssdd27

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    P1

    CCA

    BW

    MAJOR1

    MINOR1

    DESCRIPT

    Entity_and_Attribute_Overview:
    Faults and dikes are accompanied with decorations for cartographic purposes. The DECO database is an attributed vector graphic overlay of the decoration coverage. This dataset contains the teeth of thrust faults, shear zones, bars and balls, impact structure, diatremes, and ARC/INFO annotation. DIKES is the attributed vector file of the single line outcrops. Dikes at a scale of 1:500,000 are best represented by a thin single line and consequently have no area. Line Types and Attributes 
      P1   CCA  BW  MAJOR1  MINOR1  Name
   1    1    0    500    401  contact
   2    0    0    500    402  nonprinting contact
   3    4    0    500    403  fault
   4    0  106    500    404  dotted fault
   5    4    0    500    405  thrust fault
   6    0  106    500    406  dotted thrust fault
   7    4    0    500    407  thrust fault w/younger normal fault
   8    0  106    500    408  dotted thrust fault w/younger normal fault
   9    4    0    500    409  fault ? - based on source maps
  10    1    0    500    410  base of Shannon Sandstone Member
  11  135    0     50    200  shoreline
  12  135    0     50    103  edge of ice
  13    0  127     91     56  State Boundary
  20  386    0    501    420  Ti intrusive
  21  449    0    501    421  Yd intrusive
  22  449    0    501    422  YX intrusive
  23  223    0    501    423  XM intrusive
  24  331    0    501    424  ~W intrusive
  30    2    0    502    430  diatreme
  31  212    0    502    431  impact structure
  32    1    0    502    432  ball outline
  33    1    0    502    433  tooth outline
  34    1    0    502    434  bar
  35    1    0    502    435  shear zone
  40  212    0    503    440  anticline axis
  41  212    0    503    441  anticline arrow
  42  345    0    503    442  boundary region
    Entity_and_Attribute_Detail_Citation:
    More information about associated files and attributes are contained in the USGS Open-File 94-0425 accompaning the data set in a text format. These documents can be downloaded via anonymous ftp from a USGS server, greenwood.cr.usgs.gov (137.177.48.5) in a directory named /pub/open-file-reports/ofr-94-0425.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    David Love, Anne Coe Christiansen: original scribe sheets. Pat Stamile, USGS. Chris Arneson and Laisan Serebryakov, WWRC.

  3. To whom should users address questions about the data?

    Gregory N. Green and Patricia H. Drouillard
    U.S. Geological Survey
    Box 25046 Mail Stop 905
    Denver, Colorado 80225
    USA

    n/a (voice)
    n/a

    Hours_of_Service: n/a

Why was the data set created?
This geologic map was prepared as part of a study of digital methods and techniques as applied to complex geologic maps.

How was the data set created?
  1. From what previous works were the data drawn?

    scribe sheets (source 1 of 1)
    Christiansen, Love and , 1985, geologic scribe sheets.

    Type_of_Source_Media: stable base contact prints
    Source_Contribution: source data

  2. How were the data generated, processed, and modified?

    Date: Unknown (process 1 of 2)
    The geologic map was digitized from scribe sheets used to prepare the published Geologic Map of Wyoming (Love and Christiansen, 1985), consequently at a 1:500,000 scale. Stable base contact prints of the scribe sheets were scannned on a Tektronix 4991 digital scanner. The scanner automatically converts the scanned image to an ASCII vector format. These vectors were transferred to a VAX minicomputer, where they were loaded into Arc/Info. The dataset includes both linear and polygon features, with attributes derived from the original 1985 map.

    (process 2 of 2)
    Metadata imported.

    This shapefile was reprojected and clipped to the Snake/Salt Basin Boundary as part of the Wyoming Water Plan

  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    The accuracy of the attributing is unknown

  2. How accurate are the geographic locations?

    The USGS does not have National Mapping Accuracy Standards for data produced at the 1:500,000-scale.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    Unknown, but likely to be as complete in attributing as the Love and Christiansen geologic map.

  5. How consistent are the relationships among the observations, including topology?

    Line toplogy present.

How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

Access_Constraints: none
Use_Constraints: scale is 1:500,000 and should not be used outside that range

  1. Who distributes the data set? (Distributor 1 of 1)

    Data Manager
    Spatial Data and Visualization Center
    Box 4008 University Station
    Laramie, Wyoming 82071
    USA

    307-766-2735 (voice)
    n/a

  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    The distributor shall not be held liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate used described in this metadata document.

  4. How can I download or order the data?

Who wrote the metadata?
Dates:
Last modified: 19-May-2004

Metadata author:
Margo Berendsen
Box 4008 University Station
Laramie, Wyoming 82071
USA

307-766-2751 (voice)
meh@uwyo.edu

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

Generated by mp version 2.7.33 on Wed May 19 09:05:33 2004