Pottsville Formation (lower part) (ALPApv1l;3)

Pottsville Formation (lower part)

Light-gray thick-bedded to massive pebbly quartzose sandstone, containing varying amounts of interbedded dark-gray shale, siltstone, and thin discontinuos coal. The Boyles Sandstone Member is a formally named unit in the lower part of the formation. Top of unit is mapped at the Black Creek coal.

State	Alabama
Name	Pottsville Formation (lower part)
Geologic age	Pennsylvanian
Lithologic constituents	Major Sedimentary > Clastic > Sandstone (Bed)Light-gray thick-bedded to massive pebbly quartzose sandstone Minor Sedimentary > Clastic > Siltstone (Bed) Sedimentary > Clastic > Mudstone > Shale (Bed) Incidental Sedimentary > Coal (Bed)
Comments	Note: Printed map uses unit symbol 'Ppv1l'; digital map uses 'Ppv11(one)'.
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	NGMDB product page for 55859
Counties	Blount - Cullman - Etowah - Franklin - Jefferson - Lamar - Lawrence - Marion - Marshall - Morgan - Tuscaloosa - Walker - Winston

Pottsville Formation (lower part)

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.