Fort Payne Formation and Chattanooga Shale

Fort Payne Formation - Bedded chert and calcereous and dolomitic silicastone; minor coarse-grained limestone and shale. Thin green shale (Maury) at base. Thickness about 200 feet. Chattanooga Shale - Black carbonaceous shale, fissile. Thickness 0 to 70 feet.
State Tennessee
Name Fort Payne Formation and Chattanooga Shale
Geologic age Mississippian
Lithologic constituents
Major
Sedimentary > Chemical > Chert
Minor
Sedimentary > Clastic > Siltstone
Incidental
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Mudstone > Shale > Black-shale
Sedimentary > Clastic > Mudstone > Shale
Comments West sheet - Chattanooga Shale - Mapped as MDc on East-Central and East sheets of the 1966 paper geologic map of Tennessee
References

Greene, D.C., and Wolfe, W.J., 2000, Superfund GIS - 1:250,000 Geology of Tennessee, USGS, (geo250k).

Hardeman, W.D., Miller, R.A., and Swingle, G.D., 1966, Geologic Map of Tennessee: Division of Geology, Tennessee Department of Environment and Conservation, 4 sheets, scale 1:250,000

NGMDB product
Counties Benton - Decatur - Hardin - Henry - Humphreys - Perry - Stewart - Wayne