Preliminary Geologic Map of the Townsend 30' x 60' Quadrangle, Montana


by Mitchell W. Reynolds and Theodore R. Brandt, version 1.0


This geospatial 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.

The database can be downloaded via the Web from http://pubs.usgs.gov/of/2006/1138/.  ArcInfo export files and ArcView shapefiles may be extracted from a gzip-compressed tar file (1138.tar.gz)or zip-compressed file (1138.zip).  In addition, an Adobe Portable Document Format (PDF) file (OFR-2006-1138_map.pdf) can be downloaded, from which paper copies may be printed.  

The database contact is:      Mitchell W. Reynolds 
                              303-236-8007
                              mwreynol@usgs.gov
                              U.S. Geological Survey
                              Box 25046, Mail Stop 980
                              Denver, CO  80225

The data were compiled from field mapping and published geologic map sources.  Dwight Schmidt, U.S. Geological Survey, and Susan Vuke, Montana Bureau of Mines and Geology, reviewed the geologic map.  

This geospatial database consists of ArcInfo export files (.e00) and ArcView shapefiles contained in a gzipped tar archive or zip archive.  Both compressed archive files contain both types of geospatial database files.  See the list below.  Please refer to the file 1138.met for detailed metadata documentation for this geospatial database. 

List of files:
OFR-2006-1138_map.pdf
1138.met
town100r.tif
town100r.tfw


1138.tar.gz or 1138.zip:
   00README.TXT
   1138.met
   e00 directory:
      towngeo.e00
      towndike.e00
      townfold.e00
      townpts.e00
      townwell.e00
      wpgcmykg.shd.e00
      geol_sfo.lin.e00
      geoscamp2.mrk.e00
      import.aml
  shapefiles directory:
      towngeop.shp (contains polygon attributes for towngeo database)
      towngeop.shx
      towngeop.dbf
      towngeop.prj
      towngeo.shp (contains line attributes for towngeo database)
      towngeo.shx
      towngeo.dbf
      towngeo.prj
      towndike.shp (contains line attributes for towndike database)
      towndike.shx
      towndike.dbf
      towndike.prj
      townfold.shp (contains line attributes for townfold database)
      townfold.shx
      townfold.dbf
      townfold.prj
      townpts.shp (contains point attributes for townpts database)
      townpts.shx
      townpts.dbf
      townpts.prj
      townwell.shp (contains point attributes for townwell database)
      townwell.shx
      townwell.dbf
      townwell.prj