Eagle Ford Formation and Buda Limestone, undivided

Eagle Ford Formation and Buda Limestone, undivided
State Texas
Name Eagle Ford Formation and Buda Limestone, undivided
Geologic age Late Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Mixed-clastic > Siltstone-mudstone (Bed)
Minor
Sedimentary > Carbonate > Limestone (Bed)
Comments Eagle Ford Fm--Shale, siltstone, and limestone; upper part limest. and shale, ls lt-yellowish-brown, flaggy; lower part, siltst. and v. fine-grained sandst., lt-yellow to gray, laminated flaggy, some limestone, silty, med-brown, laminated, thickness 75-200 ft, thins NEward. Buda Ls--fine grained, bioclastic (mollusk-fragment-bearing), marly interbeds, commonly glauconitic, pyrite, hard, massive lt gray to pale orange; formation is 45-100 ft thick.
References

Bureau of Economic Geology, 1974, Austin Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, 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 Hays - Travis - Williamson