Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Texas
| State | Texas |
|---|---|
| Name | Briggs Formation |
| Geologic age | Phanerozoic | Paleozoic | Permian [Leonard] |
| Original map label | Pbg |
| Comments | In Malone Mtns unit is mostly gypsum, some carbonate rocks. Gypsum sparry, granular, white. Carbonate rxs upper part--ls and pisolitic dolomite interbedded with gypsum; at base persistent 25-ft unit of brwn-yell sandy dolomite; in middle--mostly dolomite; in lower part--ls, fine grained, cherty, dk gray, marine megafossils. Thickness 630 ft, base not exposed |
| Primary rock type | evaporite |
| Secondary rock type | dolostone (dolomite) |
| Other rock types | |
| Lithologic constituents | Major
Sedimentary > Chemical > Evaporite > Gypsum (Bed) Minor
Sedimentary > Carbonate > Dolostone (Bed) Incidental
Sedimentary > Carbonate > Limestone (Bed) |
| Map references | Bureau of Economic Geology, 1992, Geologic Map of Texas: University of Texas at Austin, Virgil E. Barnes, project supervisor, Hartmann, B.M. and Scranton, D.F., cartography, scale 1:500,000 |
| Unit references | Bureau of Economic Geology, 1968, Van Horn-El Paso Sheet, Geologic Atlas of Texas: Bureau of Economic Geology, The University of Texas at Austin, scale 1:250,000. |
| Geographic coverage | Hudspeth |
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U.S. Department of the Interior |
U.S. Geological Survey
URL:
http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=TXPbg;0
Page Contact Information: Peter Schweitzer
