Cloud Chief Formation (OKPcc;0)

WOODWARD- Red-brown and greenish-gray shale and siltstone with some orange-brown fine-grained sandstone and siltstone. At base are two or more thin, pink to maroon to greenish-gray dolomite beds and (or) gypsum beds ("Moccasin Creek Bed") eroding into a mappable escarpment. About 25 feet above the base is a white to light-gray dolomite ("Day Creek Bed") not mapped. Thickness ranges up to 160 feet, with top eroded in many places. CLINTON- Reddish-brown to orange-brown shale, interbedded with siltstone and sandstone in the middle part and some dolomite and much gypsum in lower part; thickness about 400 feet, thinning northward to about 175 feet. The "Moccasin Creek Gypsum Member" is at the base. LAWTON- Represented in this area by the "Moccasin Creek Gypsum Member," which is about 30 feet (9 m) thick.

State	Oklahoma
Name	Cloud Chief Formation
Geologic age	Phanerozoic \| Paleozoic \| Permian
Original map label	Pcc
Comments	Comments: Named for town of Cloud Chief in eastern Washita Co, OK in Anadarko basin, near which unit is "typically exposed" (Gould, 1924) Consists of ledges of massive gypsums imbedded in red shales. The gypsums vary a lot, both in number and thickness. Maximum development of the gypsums is along axis of Anadarko basin in eastern Washita Co, where 100-ft beds occur.
Primary rock type	shale
Secondary rock type	siltstone
Other rock types	sandstone; dolostone (dolomite); evaporite
Lithologic constituents	Major Sedimentary > Clastic > Sandstone (Bed) Sedimentary > Clastic > Siltstone (Bed) Sedimentary > Clastic > Mudstone > Shale (Bed) Minor Sedimentary > Chemical > Evaporite > Gypsum (Bed) Sedimentary > Carbonate > Dolostone (Bed)
Map references	Heran, W. D., Green, G. and Stoeser, D. B., 2003, A Digital Geologic Map Database of Oklahoma: U. S. G. S. Open File Report 03-247
Unit references	Heran, W. D., Green, G. and Stoeser, D. B., 2003, A Digital Geologic Map Database of Oklahoma: U. S. G. S. Open File Report 03-247 Morton, R.B., 1980, Reconnaissance of the water resources of the Woodward quadrangle, northwestern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 8, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by R.B. Morton, 1973, and R.O. Fay, 1977.) Cederstrand, J.R., 1996l, Digital geologic map of Woodward quadrangles, northwestern Oklahoma: U.S. Geological Survey Open-File Report 96-381,(2 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology [http://ok.water.usgs.gov/gis/geology/woodward.html] [http://ok.water.usgs.gov/gis/geology] Carr, J.E. and Bergman, D.L., 1976, Reconnaissance of the water resources of the Clinton quadrangle, west-central Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 5, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by J.E. Carr, 1972, and R.O. Fay, 1975.) Cederstrand, J.R., 1996d, Digital geologic map of Clinton quadrangles, west-central Oklahoma: U.S. Geological Survey Open-File Report 96-373, (2 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology [http://ok.water.usgs.gov/gis/geology/clinton.html] [http://ok.water.usgs.gov/gis/geology] Havens, J.S., 1977, Reconnaissance of the water resources of the Lawton quadrangle, southwestern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 6, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by R.O. Fay, 1967-68 and J.S. Havens, 1973.) Cederstrand, J.R., 1996g, Digital geologic map of Lawton quadrangles, southwestern Oklahoma: U.S. Geological Survey Open-File Report 96-376, (3 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology [http://ok.water.usgs.gov/gis/geology/lawton.html] [http://ok.water.usgs.gov/gis/geology] Gould, C. N., 1924, A new classification of the Permian red beds of southwestern Oklahoma: Bulletin of the American Association of Petroleum Geologists, vol.8, no.3, pp.322-341
Geographic coverage	Beckham - Caddo - Custer - Dewey - Ellis - Harper - Roger Mills - Washita - Woods - Woodward