|Geologic age||Early Cretaceous|
Sedimentary > Carbonate > Limestone (Bed)
Sedimentary > Clastic > Mixed-clastic > Sandstone-mudstone (Bed)
|Comments||Exposed in Quitman Mtns., Hudspeth Co., TX. Lower part is about 700 ft of lt- to dk-gray and bluish limestone, sl. arenaceous, with sm. lentils and thin intercalated layers of shale and sandy shale; middle part is 340 ft of platy white thin-bedded to laminated arenaceous to argillaceous limestone; upper part about 270 ft thick is mainly buff, marly limestone, brn sandst, and few interbedded shale beds. In northern Quitman Mtn area, base not exposed. Name derived fr. Espy Ranch about 10 mi east of Love Hogback.|
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.