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Geologic map datasets of the Custer and Gallatin National Forests of South-central Montana, in ARC/INFO format: Pryor Mountains

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  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?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   Green, Gregory N. , Bradley S. Van Gosen, Wilson, Anna B. , and Silkwood, Jeffery T. , 1999, Geologic map datasets of the Custer and Gallatin National Forests of South-central Montana, in ARC/INFO format: Pryor Mountains: U.S. Geological Survey Open-File Report 99-450, U.S. Geological Survey, Denver, Colorado.

   Online Links:

   • <http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-99-0450>

   Other_Citation_Details: ARC/INFO coverages available to download.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -108.66

   East_Bounding_Coordinate: -108.3

   North_Bounding_Coordinate: 45.25

   South_Bounding_Coordinate: 45.0

3. What does it look like?

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

   Calendar_Date: 1999

   Currentness_Reference: publication date

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

   Geospatial_Data_Presentation_Form: map

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.

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

      Grid_Coordinate_System_Name: Universal Transverse Mercator

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 1
      Ordinates (y-coordinates) are specified to the nearest 1
      Planar coordinates are specified in Meters

      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 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
      

7. How does the data set describe geographic features?

   PRYOR.PAT

   Geologic map units (Source: OFR-99-0450)

   LABEL

   Geologic map unit symbol (Source: OFR-99-0450)

   Value	Definition
   Qs	Surficial deposits (Quaternary)
   JPs	Jurassic, Triassic, and Permian sedimentary rocks--Includes Morrison Formation (Jurassic); Ellis Group (Jurassic) including the Swift, Rierdon, and Piper Formations; Chugwater Formation (Triassic); and Phosphoria Formation equivalents (Permian).
   &s (Ps)	Pennsylvanian sedimentary rocks--Includes Tensleep Sandstone and Amsden Formation
   Mm	Madison Limestone Group (Mississippian)
   Ds	Devonian sedimentary rocks--Includes Jefferson Formation (Dolomite) and Beartooth Butte Formation.
   Ob	Bighorn Dolomite (Ordovician)
   _s (Cs)	Cambrian sedimentary rocks--Includes Gallatin Limestone, Gros Ventre Shale (Formation), and Flathead Quartzite
   p_r (pCr)	Precambrian rocks--Includes granitic gneiss; hornblende schist; quartz veins; and aplite dikes

   EXPLANATION

   Short definition of every map unit (Source: OFR-99-0450)

   P1

   numerical representation of map units (Source: OFR-99-0450)

   Range of values
   Minimum:	1
   Maximum:	8

   CALCOMP1

   numerical representations of map units (Source: OFR-99-0450)

   Range of values
   Minimum:	14
   Maximum:	725

   PRYOR.AAT

   Linear map features (Source: OFR-99-0450)

   LABEL

   Definition of linear feature (Source: OFR-99-0450)

   Value	Definition
   BOUNDRY	map boundary
   CONTACT	Observed contact
   CONTACT_CONCEALED	Contact that is concealed and its position inferred.
   FAULT	Observed fault
   FAULT_CONCEALED	Fault that is concealed and its position inferred.
   FAULT_INFERRED	Fault whose position is inferred

   FOLDS.AAT

   Folds, linear (Source: OFR-99-0450)

   LABEL

   explaination of linear fold features (Source: OFR-99-0450)

   Value	Definition
   ANTICLINE	Observed anticlinal fold axis
   ANITCLINE_APPROXIMAT	Inferred approximate location of fold
   SYNCLINE	Observed synclinal fold axis

   Entity_and_Attribute_Overview:

   Pryor Data files:
   DECO.E00:  ARC/INFO interchange file that can be used to create the
   decorations on the line work shown on the geologic map of USGS
   Open-File Report 96-256, figure 2 (p. 4).
   FNT003.E00:  ARC/INFO interchange file that can be used to create
   the fonts labeling the map units shown on the geologic map of USGS
   Open-File Report 96-256, figure 2 (p. 4).
   FOLDS.E00:  ARC/INFO interchange file that can be used to create the
   fold axes shown on the geologic map of USGS Open-File Report 96-256,
   figure 2 (p. 4).
   GEOL.KEY:  Text file providing a description of the map units
   LOAD.AML:  ARCPLOT command that recreates the database structure of
   this directory
   MAPBAR.AML:  ARCPLOT command that creates the map-scale bar
   PROJECT.TXT:  Text file describing the projection applied to this
   database
   PRYOR.AML:  ARCPLOT command that creates the geologic map of USGS
   Open-File Report 96-256, figure 2 (p. 4).
   PRYOR.BOX:  Text file for the map legend in the description of map
   units shown on the geologic map of USGS Open-File Report 96-256,
   figure 2 (p. 4).
   PRYOR.E00:  ARC/INFO interchange file that can be used to create the
   database for figure 2 (p. 4) of USGS Open-File Report 96-256.
   PRYOR.MET:  Metadata file
   PRYOR.PDF:  "Portable Document Format" file that can be viewed with
   the free software Adobe Acrobat Reader
   PRYOR.RTL:  A Hewlett Packard graphics plot file ("Raster Transfer
   Language") format
   PRY_TIC.E00:  ARC/INFO interchange file that can be used to create
   the latitude-longitude tic marks shown on the geologic map of USGS
   Open-File Report 96-256, figure 2 (p. 4). \SDTS:  PRYOR.EOO in SDTS
   (Spatial Data Transfer Standard)
   

   Entity_and_Attribute_Detail_Citation: For more information see the file readme.txt.

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Gregory N. Green
   • Bradley S. Van Gosen
   • Anna B. Wilson
   • Jeffery T. Silkwood

2. Who also contributed to the data set?

   Gregory N. Green, Anna B. Wilson, and Bradley S. Van Gosen of the U.S. Geological Survey and Jeffrey T. Silkwood of the USDA Forest Service

3. To whom should users address questions about the data?
   Bradley S. Van Gosen
   U.S. Geological Survey
   geologist
   MS 905, USGS, Denver Federal Center
   Denver, CO 80225
   USA
   

   (303) 236-1566 (voice)
   bvangose@usgs.gov
   

Why was the data set created?

This dataset was developed to provide a geologic map GIS database of the Custer National Forest in the Pryor Mountains for use in spatial analysis by a variety of users.

How was the data set created?

1. From what previous works were the data drawn?

   Mineral Resources of the Pryor Mountains, Van Gosen and others, 1996 (source 1 of 1)

   Van Gosen, B.S., Wilson, A.B., Hammarstrom, J.M., and Kulik, D.M., 1996, Mineral Resource Assessment of the Custer National Forest in the Pryor Mountains, Carbon County, South-Central Montana.: U.S. Geological Survey Open-File Report 96-256, U.S. Geological Survey, Denver, Colorado.

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 126720

   Source_Contribution: New and compiled geologic mapping

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

   Date: 1999 (process 1 of 1)

   The original digital GSMAP data files that were used to create the open-file map were transfered to ARC via the GENERATE/UNGENERATE tool. The lines and polygons attributes were checked against the orginal and corrected to match the published map as neccessary. Shadeset and lineset attributes were added in ARC. This work was done by Green. The digital database was quality checked against original materials by Van Gosen.

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?

2. How accurate are the geographic locations?

3. How accurate are the heights or depths?

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

   finished

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

   manual check against orginals

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:

This database is not meant to be used or displayed at any scale other than 1:126,720.

1. Who distributes the data set? (Distributor 1 of 1)
   U.S. Geological Survey
   Database Administrator
   MS 905, USGS, Denver Federal Center
   Denver, CO 80225
   USA
   

   (303) 236-1566 (voice)
   bvangose@usgs.gov
   

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

   USGS Open-File Report 99-450

3. What legal disclaimers am I supposed to read?

   This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey (USGS) editorial standard nor with the North American stratigraphic codes. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the USGS. Although these data have been used by the USGS and have been successfully imported into data base programs, no warranty, expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. This data base GIS is not meant to be used or displayed at any scale other than 1:126,720.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Geologic map of the Custer National Forest in the Pryor Mountains, Montana in format ARC/INFO export (version 7.1.2) Size: 77 Mbyte
     Network links:	<http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-99-0450>

   • Cost to order the data: none

Who wrote the metadata?

Dates:

Last modified: 28-Apr-1999
Last Reviewed: 21-Jul-2000

Metadata author:

U.S. Geological Survey
c/o Bradley S. Van Gosen
MS 905, USGS, Denver Federal Center
Denver, CO 80225
USA

(303) 236-1566 (voice)
bvangose@usgs.gov

Metadata standard:

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