DIGITAL DATABASE FOR THE QUATERNARY GEOLOGIC MAP OF THE AUSTIN QUADRANGLE,
UNITED STATES, MISCELLANEOUS INVESTIGATIONS SERIES I-1420 (NH-14)

Files available through this site represent the digital component of the
	Austin Quadrangle of the Quaternary Geologic Atlas of the U.S., 
	Miscellaneous Investigations Series, Map I-1420 (NH-14).  The files
	contain .e00 files, shapefiles, and pdf files of the map's illustrations
	and correlation diagram, and pdf files of the map unit descriptions and
	sources of information.  An ARC/INFO aml, keyfiles and shadeset
        are included to produce the plot of the data.  


The following ARC/INFO export coverages are included in austinGIS.zip:

	>geo_net--map unit polygons and open water; lines that are geologic
		contacts and shorelines.

	>geo_pnt--a point coverage of point data shown on the map

	>geo_lin--a line coverage 

	>hydr_lin--a line coverage indicating locations of streams and water bodies

	>topo_lin--a line coverage containing contour lines

	>bnd_lin--a line coverage with a neatline and State boundary lines

	>bnd_poly--a polygon coverage containing county and administrative areas

	>rd_lin--a line coverage of State and Federal highways in the U.S.

	>rr_lin--a line coverage of railroads

	>grid_lin--a line coverage of 1 degree projection lines


Included in austinIMG.zip: 

	I-1420_nh-14_map.pdf--A scan of the original published paper map

	I-1420_nh-14_plotfile.pdf--A plot of the digital files
		containing map units, linear features, hydrology,
            	                   topography, State boundaries, and list of map symbols

	I-1420_nh-14_correlation.pdf--A scan of the diagram showing
             		correlation of map units

	>I-1420_nh-14_physiographic.pdf--A scan of the illustration showing
		features mentioned in description of Map Units

	I-1420_nh-14_index.pdf--An index map showing location of
      	                 Quaternary Geologic Atlas of the U.S. quadrangles

	I-1420_nh-14_responsibility.pdf--A scan of the illustration of
            		compilation responsibilities shown on the paper map

	I-1420_nh-14_textonly.pdf--Text description of map units, figure
	     	 captions, and sources of information used in preparing the
            	      	original map
		
Errors noted on I-1420_nh_14_map.pdf

	In DESCRIPTION OF MAP UNITS, BEAUMONT FORMATION, turtle should be spelled turtles

	In DESCRIPTION OF MAP UNITS, zse, CLAYEY SAND AND SANDY CLAY DECOMPOSITON, DECOMPOSITON should
	  be spelled DECOMPOSITION

	In SOURCES OF INFORMATION, Wood, W.W., and Ostercamp, W.R., Ostercamp 
	  should be spelled Osterkamp

Also available in the file austinAV.zip are the ArcView shape files of the
            Arc/Info coverages

  Charles A. Bush
  U.S. Geological Survey                                                     
  (303) 236-4723
  cbush@usgs.gov