Entry_ID: (required)
Entry_Title: The Digital Geologic Map of Colorado in ARC/INFO Format
Group: Data_Set_Citation
  Originator(s): Gregory N. Green
  Title: The Digital Geologic Map of Colorado in ARC/INFO Format
  Publication: U.S. Geological Survey Open-File Report
  Publication_Date: 1992
  Publication_Place: Denver
  Publisher: U.S. Geological Survey
  Edition: version 1.0
  Data_Presentation_Form: map
  URL: http://pubs.usgs.gov/of/1992/ofr-92-0507/
End_Group
Keyword: geology
Keyword: geologic maps
Keyword: geologic structure
Keyword: bedrock geologic units
Keyword: geospatial datasets
Group: Temporal_Coverage
  Start_date: 1992
  Stop_date: 1992
End_Group
Data_Set_Progress: Complete
Group: Spatial_Coverage
  Southernmost_Latitude: 37.0
  Northernmost_Latitude: 41.0
  Westernmost_Longitude: -109.1
  Easternmost_Longitude: -102.0
End_Group
Location: US08 = Colorado
Group: Data_Resolution
  Latitude_Resolution: 1.0
  Longitude_Resolution: 1.0
End_Group
  Access_Constraints: none
  Use_Constraints: This database is not meant to be used or displayed at any scale other than 1:500,000.  Any hardcopies utilizing these data sets shall clearly indicate their source.  If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map.  Licensee specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the U.S. Geological Survey. 
Originating_Center: (required)
Group: Data_Center
  Data_Center_Name: U.S. Geological Survey Information Services
  Dataset_ID: USGS Open-File Report 92-507
Group: Data_Center_Contact
  Last_name: U.S. Geological Survey Information Services
  First_name: N/A
  Email: infoservices@usgs.gov
  Phone: 1-888-ASK-USGS
  Group: Address
    Open-File Reports, PO Box 25286, Denver Federal Center
    Denver, CO 80225-0046
    USA
  End_Group
End_Group
End_Group
  Storage_Medium: VAX/VMS 5.4 ARC/INFO version 5.0 
Group: Distribution
  Distribution_Media: online
  Distribution_Format : ARCE
  Distribution_Size: 11
  Fees: none
End_Group
Group: Distribution
  Distribution_Media: online
  Distribution_Format : Plain text
  Distribution_Size: 0.0508
  Fees: none
End_Group
Group: Reference
End_Group
Group: Summary
  This dataset was developed to provide geologic map GIS database of
  Colorado for use in future spatial analysis by a variety of users.
  
  This database is not meant to be used or displayed at any scale other
  than 1:500,000.
  
  
  This geologic map was prepared as a part of a study of digital
  methods and techniques as applied to complex geologic maps.  The
  geologic map was digitized from the original scribe sheets used to
  prepare the published Geologic Map of Colorado (Tweto 1979).
  Consequently the digital version is at 1:500,000 scale using the
  Lambert Conformal Conic map projection parameters of the state base
  map.  Stable base contact prints of the scribe sheets were scanned 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 then loaded into
  ARC/INFO.  Each vector and polygon was given attributes derived from
  the original 1979 geologic map.
  
  
  This data base consists of three major Arc/Info GIS datasets:
  - one the geologic map with faults, formations and volcanic vents,
  - two the index and correlation chart and
  - three the sources of geologic data.
  
  April 1995,
  An update was done solely for the purpose of adding the abilitly to
  plot to an HP650c plotter.  Two new ARC/INFO plot AMLs along with a lineset
  and shadeset for the HP650C design jet printer have been included.  These
  new files are COLORADO.650, INDEX.650, TWETOLIN.E00 and TWETOSHD.E00.  These
  files were created on a UNIX platform with ARC/INFO 6.1.2.  Updated versions
  of INDEX.E00, CONTACT.E00, LINE.E00, DECO.E00 and BORDER.E00 files that
  included the newly defined HP650c items are also included.
  
End_Group
Group: DIF_Author
  Last_name: Schweitzer
  First_name: Peter
  Middle_name: N
  Email: pschweitzer@usgs.gov
  Phone: 703-648-6533
  Group: Address
    Mail Stop 954
    12201 Sunrise Valley Dr
    Reston, VA 20192-0002
    USA
  End_Group
End_Group
DIF_Revision_Date: 20150204
Science_Review_Date: