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Geologic Atlas of Texas (GAT)
Digital Format

Digital 15-minute GAT Quads for the State of Texas
(Projection: TSMS, NAD 83)

 
GAT Quad and legend files are divided geographically into SE, NE, NW, and SW quadrants of the state (approximately 2.05 GB total)
 
This dataset, designed for use with ArcView GIS 3.x and 8.x software products, consists of 1133 georeferenced 15-minute GAT (Geologic Atlas of Texas) quadrangle tiff (tfw) images, along with 1357 scanned legend and formation description images. Layer files (used in ArcView 8.x) for the 1-degree quads have been included to display up to 16 GAT Sheets at a time as a seamless image. Pyramid image files are included for faster frame redraw in ArcView 8.x.
 
DQ NE……..……$10
DQ NW……….…$10
DQ SE…………..$10
DQ SW………….$10
DQ All4………….$40
Source: John D. Estepp, P.G. TCEQ Surface Casing
 
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