Parkwood and Pennington Formations undifferentiated

Interbedded medium to dark-gray shale and light to medium-gray sandstone, locally contains lithic conglomerate, dusky-red and grayish-green mudstone, argillaceous limestone, and clayey coal.
State Alabama
Name Parkwood and Pennington Formations undifferentiated
Geologic age Pennsylvanian-Mississippian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Incidental
Sedimentary > Carbonate > Limestone (Bed)argillaceous limestone
Sedimentary > Clastic > Mudstone (Bed)
Sedimentary > Coal (Bed)clayey coal
Sedimentary > Clastic > Conglomerate (Bed)locally contains lithic conglomerate
References

Szabo, M.W., Osborne, E.W., Copeland, C.W. Jr., and Neathery, T.L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.

NGMDB product
Counties Blount - DeKalb - Etowah - Jefferson - Marshall