Anacacho Limestone

Anacacho Limestone; North, central, and south Texas including Quaternary for all of west Texas.
State Texas
Name Anacacho Limestone
Geologic age Late Cretaceous; Gulfian Series
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)
Minor
Unconsolidated > Marl (Bed)
Comments In Ouachita tectonic belt province limestone and marl, limest. lt. yell to yell-brn and lt.gray, thick beds, in part crossbedded, fossilif.; alternates with marl, lt gray to yell; in part sandy, some volcanic rock fragments and weathered bentonite beds, scarce sandstone ledges; marine megafossils abdt; thickness as much as 500 ft.
References

Bureau of Economic Geology, 1974, San Antonio Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000.

Bureau of Economic Geology, 1977, Del Rio Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000.

Hill, R.T., and Vaughan, T.W., 1898, Geology of the Edwards Plateau and Rio Plain adjacent to Austin and San Antonio, Texas, with reference to the occurrence of underground waters: U.S. Geological Survey Annual Report 18, pt. 2, p. 193-321.

https://pubs.er.usgs.gov/publication/ar18

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 Bexar - Kinney - Medina - Uvalde