Archer City Formation

Archer City Formation
State Texas
Name Archer City Formation
Geologic age Permian; Wolfcamp Series
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)
Minor
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)
References

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.

NGMDB product
Counties Archer - Baylor - Clay - Montague - Throckmorton - Young