Preliminary Geologic Map of the Sanchez Reservoir Quadrangle and eastern part of
the Garcia Quadrangle, Costilla County, Colorado


by Ren A. Thompson, Michael N. Machette, and Benjamin J. Drenth, 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/2006/1074/.  ArcInfo export files and ArcView shapefiles 
may be extracted from a gzip-compressed tar file (1074.tar.gz)or zip-compressed 
file (1074.zip).  In addition, an Adobe Portable Document Format (PDF) file 
(OF07-1074map.pdf) can be downloaded, from which paper copies may be 
printed.  

The database contact is:      Theodore R. Brandt 
                              303-236-1901
                              tbrandt@usgs.gov
                              U.S. Geological Survey
                              Box 25046, Mail Stop 980
                              Denver, CO  80225

The data were compiled from field mapping.  Karl Kellogg, U.S. Geological Survey,
and Chester Ruleman, U.S. Geological Survey, 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 1074.met for detailed metadata documentation 
for this geospatial database. 

List of files:
OF07-1074map.pdf
1074.met
sanresr.tif
sanresr.tfw


1074.tar.gz or 1074.zip:
   00README.TXT
   1074.met
   e00 directory:
      sanrgeo.e00
      sanrpts.e00
      wpgcmykg.shd.e00
      geol_sfo.lin.e00
      geoscamp2.mrk.e00
      import.aml
  shapefiles directory:
      sanrgeop.shp (contains polygon attributes for sanrgeo database)
      sanrgeop.shx
      sanrgeop.dbf
      sanrgeop.prj
      sanrgeo.shp (contains line attributes for sanrgeo database)
      sanrgeo.shx
      sanrgeo.dbf
      sanrgeo.prj
      sanrpts.shp (contains point attributes for sanrpts database)
      sanrpts.shx
      sanrpts.dbf
      sanrpts.prj