Kiowa Shale and Cheyenne Sandstone

Kiowa Shale or FM- light -gray to black illitic shale with thin coquinoidal limestone beds at the base; sandstone lenses common. Cheyenne Sandstone- massive to crossbedded, light-gray to buff fine-grained sandstone with lenses of gray sandy shale and conglomerate.
State Kansas
Name Kiowa Shale and Cheyenne Sandstone
Geologic age Early Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Minor
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Conglomerate (Lens)
Comments Kiowa Shale or FM- locally, in north-central Kansas, sandstone may approximate 80% of total, approximate thickness 60-150 ft. in outcrop, Cheyenne Sandstone- approximate thickness 0- 100 ft. in outcrop, maximum subsurface thickness is 300 ft.
References

Ross, Jorgina A., 1991, Geologic Map of Kansas: Kansas Geological Survey, Univ. of Kansas, Map M-23, scale 1:500,000.

Zeller, D.E., ed., 1968, The Stratigraphic Succession in Kansas, State Geological Survey of Kansas Bull. 189.

NGMDB product
Counties Barber - Barton - Clark - Clay - Cloud - Comanche - Dickinson - Ellsworth - Kiowa - Lincoln - McPherson - Marion - Ottawa - Rice - Saline - Washington