Santa Elena Limestone (TXKse;0)

State	Texas
Name	Santa Elena Limestone
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Early
Original map label	Kse
Comments	Cliff-forming limestone unit that overlies 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 740 ft at mouth of Santa Elena Canyon, 500 ft in Santiago Peak area, 943 ft in Black Gap area.
Primary rock type	limestone
Secondary rock type	mudstone
Other rock types	chert
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed) Incidental Sedimentary > Chemical > Chert (Bed) Unconsolidated > Marl (Bed)
Map references	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
Unit references	Bureau of Economic Geology, 1979, Emory Peak--Presidio Sheet, Geologic Atlas of Texas, University of Texas at Austin. Bureau of Economic Geology, 1977, Del Rio Sheet, Geologic Atlas of Texas, University of Texas, Bureau of Economic Geology, scale 1:250,000.
Geographic coverage	Brewster - Pecos - Presidio - Terrell