| State | Texas |
|---|---|
| Name | Bluff Mesa Formation |
| Geologic age | Early Cretaceous |
| Lithologic constituents |
Major
Sedimentary > Carbonate > Limestone (Bed)
Incidental
Sedimentary > Clastic > Sandstone (Bed, Lens)
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)
|
| Comments | Exposed in Quitman, Eagle, and Van Horn Mtns, Presidio Co., on Marfa Sheet (1979). Limestone, sandstone, and sandy shale. Mostly limestone, v. fine grained, sandy, oolitic near middle, thin to thick lenticular beds; lenses of quartz sandstone; some interbeds of sandy shale; abdt marine megafossils and foraminifers; thickness 1,100-1,470 ft. |
| 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.Bureau of Economic Geology, 1979, Marfa Sheet, Geologic Atlas of Texas: Bureau of Economic Geology and The 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 | Culberson - Hudspeth - Jeff Davis - Presidio |