|Name||Edwards and Comanche Peak Limestones, undivided|
|Geologic age||Early Cretaceous|
Sedimentary > Carbonate > Dolostone (Bed)
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Chemical > Chert (Bed)
|Comments||Edwards Limstone, limestone, dolostone, and chert. limest. aphanitic to fine grained, massive to thin bedded, hard, brittle, in part rudistid biostromes, much miliolid biospartie; dolostone fine to v. fine grained, porous, med gray to grayish brown; chert, nodules and plates common. 60-350 ft thick, thins northward. Comanche Peak Limestone fine to v. fine grained, fairly hard, nodular, lt. gray weathers white, extensively burrowed. Thickness as much as 80 ft.|
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.
|Counties||Bell - Travis - Williamson|