Parkwood Formation

Interbedded medium to dark-gray shale and light to medium-gray sandstone; locally contains dusky-red and grayish-green mudstone, argillaceous limestone, and clayey coal.
State Alabama
Name Parkwood Formation
Geologic age Pennsylvanian-Mississippian
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Minor
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone
Incidental
Sedimentary > Coalclayey coal
Sedimentary > Carbonate > Limestoneargillaceous limestone
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 Bibb - Calhoun - Jefferson - Saint Clair - Shelby - Tuscaloosa