|Name||Bell Canyon, Cherry Canyon, and Brushy Canyon Formations undivided|
|Geologic age||Permian; Guadalupe Series|
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Carbonate > Limestone (Bed)
|Comments||Mostly sandstone, with some limestone, and siltstone. Total thickness about 3,000 ft. (See individual unit descriptions)|
Bureau of Economic Geology, 1968, Van Horn-El Paso Sheet, Geologic Atlas of Texas: Bureau of Economic Geology, The University of Texas at Austin, 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.