| State | Texas |
|---|---|
| Name | Quartermaster Formation |
| Geologic age | Permian; Guadalupe Series |
| Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)
Minor
Sedimentary > Chemical > Evaporite > Gypsum (Bed)
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Mixed-clastic > Sandstone-mudstone (Bed)
|
| Comments | shale, siltstone, sandstone, gypsum, and dolomite, interbedded. Shale indurate, thin interbeds of satinspar, various shades of red, reddish-brown, reddish-orange. Sandst fine-grain quartz, red, reddish-orange. Shale sandy, massive, red. gypsum and dolomite discontinuous and thin bedded. Thickness 300 + ft. |
| References | Bureau of Economic Geology, 1968, Plainview Sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000.Bureau of Economic Geology, 1983, Tucumcari 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 | Armstrong - Briscoe - Coke - Crosby - Dickens - Donley - Fisher - Floyd - Garza - Hall - Kent - King - Mitchell - Motley - Nolan - Randall - Scurry - Sterling - Stonewall |