Digital Series 170
The purpose of this report is to release a digital geologic map database for the State of Texas. This dataset was developed to provide a digital geologic map database of the Barnes 1992 Geologic Map of Texas. This data set was prepared in cooperation with the Texas Bureau of Economic Geology. The Geologic Map of Texas was originally printed as four 1:500,000-scale sheets. Original clear-film positives of these sheets were provided by the Texas Bureau of Economic Geology. These were scanned, georeferenced, digitized and attributed, edge matched, and combined into a single statewide database. There are three digital layers that cover the entire State: formations and contacts, geologic faults, and graphic decorations. The merged layers are still at 1:500,000 scale, and their use at scales significantly different is not recommended. The provided data formats are ESRI ArcInfo coverage interchange .e00 and ESRI shapefile.
Posted January 2007
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