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Minnekahta Limestone and Opeche Shale

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Minnekahta Limestone - Gray slabby hard limestone. Locally is a member of the Goose Egg Formation. Opeche Shale - Red soft sandy shale. Locally is a member of the Goose Egg Formation.
State Wyoming
Name Minnekahta Limestone and Opeche Shale
Geologic age Permian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Carbonate > Limestone
References

Love, J.D. and Christiansen, A.C., 1985, Geologic Map of Wyoming: U.S. Geological Survey, scale 1:500,000.

https://pubs.er.usgs.gov/publication/70046739
NGMDB product
Counties Crook - Weston