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Belle Fourche Shale, Mowry Shale, Newcastle Sandstone,and Skull Creek Shale

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Note: see individual unit descriptions
State South Dakota
Name Belle Fourche Shale, Mowry Shale, Newcastle Sandstone,and Skull Creek Shale
Geologic age Late Cretaceous to Early Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)
Sedimentary > Clastic > Siltstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
Minor
Sedimentary > Clastic > Mudstone > Claystone > Bentonite (Bed)
Sedimentary > Clastic > Sandstone > Arenite > Calcarenite (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Carbonate > Limestone (Lens)
References

Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey, GM 10, scale 1:500,000.
NGMDB product
Counties Meade