Geologic Map of the San Luis Quadrangle, Costilla County, Colorado by Michael N. Machette, Ren A. Thompson, and Benjamin J. Drenth, version 1.0 This database, identified as SIM_2963, 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. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implies is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. Although this information product, for the most part, is in the public domain, it also contains copyrighted material as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. The database can be downloaded via the Web from http://pubs.usgs.gov/sim/2963/. ArcInfo export files and ArcView shapefiles may be extracted from a gzip-compressed tar file (2963.tar.gz)or zip- compressed file (2963.zip). In addition, an Adobe Portable Document Format (PDF) file (2963_map.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. Robert Kirkham, Colorado Geological Survey, and Anthony Crone, 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 2963.met for detailed metadata documentation for this geospatial database. List of files: 2963_map.pdf 2963.met sanluisr.tif sanluisr.tfw 2963.tar.gz or 2963.zip: 00README.TXT 2963.met e00 directory: sanlgeo.e00 sanlpnt.e00 sanlage.e00 wpgcmykg.shd.e00 geol_sfo.lin.e00 geoscamp2.mrk.e00 import.aml shapefiles directory: sanlgeop.shp (contains polygon attributes for sanlgeo database) sanlgeop.shx sanlgeop.dbf sanlgeop.prj sanlgeo.shp (contains line attributes for sanlgeo database) sanlgeo.shx sanlgeo.dbf sanlgeo.prj sanlpnt.shp (contains point attributes for sanlpnt database) sanlpnt.shx sanlpnt.dbf sanlpnt.prj sanlage.shp (contains point attributes for sanlage database) sanlage.shx sanlage.dbf sanlage.prj