Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > Texas
| State | Texas |
|---|---|
| Name | undivided part of Washita Group |
| Geologic age | Phanerozoic | Mesozoic | Cretaceous-Early [Comanchean] |
| Original map label | Kwu |
| Comments | Thick clay units and thin limestone units; thickness 200 ft. Clayst., mudst., and sandst. Aphanitic limest. forms ledge, marine megafossils, alternating clay, marl, and limestone. |
| Primary rock type | clay or mud |
| Secondary rock type | limestone |
| Other rock types | mudstone |
| Lithologic constituents | Major
Unconsolidated > Fine-detrital > Clay (Bed) Minor
Sedimentary > Carbonate > Limestone (Bed) Unconsolidated > Marl (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, 1972, Dallas sheet, Geologic Atlas of Texas, Bureau of Economic Geology, University of Texas at Austin, scale 1:250,000. |
| Geographic coverage | Bosque - Erath - Hill - Hood - Johnson - McLennan - Parker - Somervell - Tarrant |
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