Map showing geology and hydrostratigraphy of the Edwards aquifer catchment 
area, northern Bexar County, south-central Texas

By Amy R. Clark, Charles D. Blome, and Jason R. Faith


This geologic spatial 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/2009/1008/.  ArcInfo export files and ArcGIS shapefiles 
may be extracted from a gzip-compressed tar file (2009-1008.tar.gz) or zip-
compressed file (2009-1008.zip).  In addition, Adobe Portable Document Format 
(PDF) files can be downloaded for the map sheet and the pamphlet, from which 
paper copies may be printed.


This geospatial database consists of ArcInfo export files and ArcGIS 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 2009-1008.met for detailed metadata documentation for 
this geospatial database.


List of files:
  2009-1008_map.pdf
  2009-1008_pamphlet_508.pdf
  2009-1008.met

2009-1008.tar.gz or 2009-1008.zip:

  00README.TXT
  2009-1008.met
  e00 directory:
    bexar_geo.e00 -- geologic units, contacts, and faults
  shapefile directory:
    bexar_geo_polygon.shp – geologic units
    bexar_geo_polygon.shx
    bexar_geo_polygon.dbf
    bexar_geo_polygon.prj
    bexar_geo_polygon.sbn
    bexar_geo_polygon.sbx
    bexar_geo_arc.shp – geologic contacts and faults
    bexar_geo_arc.shx
    bexar_geo_arc.dbf
    bexar_geo_arc.prj
    bexar_geo_arc.sbn
    bexar_geo_arc.sbx