| State | Texas |
|---|---|
| Name | Quartermaster Formation and Whitehorse Group, undivided |
| Geologic age | Permian; Guadalupe Series |
| Lithologic constituents |
Major
Sedimentary > Clastic > Mixed-clastic > Sandstone-mudstone (Bed)
Minor
Sedimentary > Chemical > Evaporite > Gypsum (Bed)
Sedimentary > Carbonate > Dolostone (Bed)
|
| Comments | shale, siltstone, sandstone, gypsum, and dolomite interbedded |
| References | Bureau of Economic Geology, 1974, San Angelo Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000.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. |
| NGMDB product | |
| Counties | Carson - Collingsworth - Donley - Gray - Hemphill - Hutchinson - Moore - Oldham - Potter - Wheeler |