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WEATHER
Rush Springs Formation (OKPr;0)
Geologic Formation
in
OK
,
KS
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Lithology
Shale
Shale
Dolostone
Other
(2,450 mi²)
Geologic Age
Permian (299.05 Ma – 252.23 Ma ago)
Geologic Unit Label
Pr
WOODWARD- Orange-brown fine-grained sandstone, commonly crossbedded, with some interbedded red-brown shale, silty shale, and gypsum beds. In southern part of area, about 30 feet below top is a thin massive gypsum bed (“Weatherford Bed” or “One Horse Bed”), not mapped here. About 100 feet lower is another thin gypsum bed ("Old Crow Bed”) not mapped here. Thickness is about 190 feet in southern part and 90 feet near Kansas border, with top eroded in many places. CLINTON- “Rush Springs Formation,” Pr, orange-brown, cross-bedded, fine-grained sandstone with some dolomite and gypsum beds. Thickness, about 300 feet, thinning northward to about 186 feet. LAWTON- “Rush Springs Formation,” Pr, very fine-grained, cross-bedded sandstone, 136 to 300 feet (41 to 90 m) thick. The “Weatherford Gypsum Bed,” Prw, contains gypsum and dolomite and is as much as 60 feet (18 m) thick in the upper part of the Rush Springs. (Whitehorse Group) ARDMORE-SHERMAN- Sandstone, orange-brown, fine- to medium-grained, moderately indurated, with “Weatherford Gypsum Bed,” Prw, 2 to 15 feet thick, near top. Thickness, about 280 feet, top eroded (Whitehorse Group).
—
USGS
Taxonomy
Classified As
Geologic Formation
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