|Name||Santa Elena Limestone, Sue Peaks Formation, Del Carmen Limestone, and Telephone Canyon Formation, undivided|
|Geologic age||Early Cretaceous|
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)
|Comments||Santa Elena Limestone forms cliffs over Sue Peaks Formation. Santa Elena Ls is lt-gray to white, fine-grained to microgranular, massive, beds to 10 ft thick, some marl interbeds, chert nodules and silicified rudistids common in massive beds. Thickness about 350-450+ft. Sue Peaks Formation is gray aphanitic limestone and interbedded yell-gray shale thickness 75 -250 ft. Occupies slope between overlying Santa Elena Ls and underlying Del Carmen Ls. Del Carmen Ls is gray limestone aphanitic to fine grained, massive, chert nodules, weathers brown; rudistids and milliolids common. thickness 350-475 ft. Telephone Canyon Fm is yell-gray, marly, nodular limestone, marine fossils common thickness about 75 ft in Big Bend N.P.|
Bureau of Economic Geology, 1977, Del Rio Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000.
Bureau of Economic Geology, 1979, Emory Peak--Presidio Sheet, Geologic Atlas of Texas, University of Texas at Austin.
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||Brewster - Presidio|