Pg. 2028-2035. Post Oak conglomerate member of Wichita formation. Proposed for conglomerate and arkose beds surrounding Wichita Mountains as a near-shore facies of lower part of Wichita formation. Composed of four distinct conglomerate facies: granite boulder conglomerate, rhyollte porphyry conglomerate, limestone boulder conglomerate, and conglomerate with zeolite-opal cement. This latter facies was named Tepee Creek (Merritt and Ham, 1941 [AAPG Bull., v. 25, no. 2, p. 287, 290-299]). Tongues into Wellington formation. [Age is Permian.]
Named from Post Oak Creek in sec. 12, T. 2 N., R. 15 W., and from Post Oak Mission [no longer exists] in northeast corner of sec. 7, T. 2 N., R. 14 W., [Fort Sill Military Reservation, Quanah Mountain 7.5-min quadrangle], Comanche Co., southwestern OK, where unit is thick and well developed. [Extends into southeastern Kiowa Co. and southwestern Caddo Co.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 3111).

Pg. 28. Post Oak conglomerate member of Wichita formation. As now used, term Tepee Creek is applied to zeolite-opal sediments that were deposited as anorthosite conglomerates and sandstones unconformably on basic igneous rocks in central part of Wichita Mountain region. These sediments probably are coarse-clastic shoreward facies of shales in Wichita formation of Early Permian age. Also included in this general classification are the limestone conglomerates, granite conglomerates, and arkoses which in eastern part of Wichita Mountains are called Post Oak conglomerate member of Wichita formation. General concept of Post Oak member must be revised to take into consideration rather extensive granite conglomerates and arkoses in overlying Hennessey formation that border granite hills in Quartz Mountain area near Lugert [in Quartz Mountain State Park, Lake Altus 7.5-min quadrangle, Kiowa Co., southwestern OK].

Source: US geologic names lexicon (USGS Bull. 1200, p. 3111).