|Name||Archer City Formation|
|Geologic age||Permian; Wolfcamp Series|
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)
Sedimentary > Clastic > Conglomerate (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Siltstone (Bed)
|Comments||mudstone, sandstone, siltstone, and conglomerate. 350-400 ft thick. Stratotype 5 mi SE Archer City, TX. Mostly reddish-brown mudst. exposed below cuesta-forming ss. Nine conglomeratic sandstone members separated by 10-50 ft of yell-brn and reddish-brn mudstone in Montague and eastern Clay Cos. Mudst thickens west. Calcar nodules and some siltstone.|
|Stratigraphic units||Cisco Group, Bowie Group (new)|
Hentz, T., 1988, Lithostratigraphy and paleoenvironments of upper Paleozoic continental red beds, north-central Texas: Bowie (new) and Wichita (revised) Groups: Texas Bureau of Economic Geology, Report of Investigations 170.
Bureau of Economic Geology, 1987, Wichita Falls-Lawton Sheet, Geologic Atlas of Texas: University of Texas at Austin, Bureau of Economic Geology, 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.
|Counties||Archer - Baylor - Clay - Montague - Throckmorton - Young|