Tuscaloosa Group undifferentiated

Light-gray to moderate-reddish-orange clayey, gravelly fine to very coarse sand; massive mottled sandy clay; local wood and leaf beds; and thin beds of indurated sandstone. Gravel consists mainly of quartz and quartzite and range in size from very fine pebbles to large cobbles. Mapped eats of the Tallapoosa River.
State Alabama
Name Tuscaloosa Group undifferentiated
Geologic age Cretaceous
Lithologic constituents
Major
Unconsolidated > Coarse-detrital > Sand (Bed)Light-gray to moderate-reddish-orange clayey, gravelly fine to very coarse sand
Unconsolidated > Coarse-detrital > Gravel (Bed)gravelly fine to very coarse sand; gravel consists mainly of quartz and quartzite and range in size from very fine pebbles to large cobbles.
Unconsolidated > Fine-detrital > Clay (Bed)massive mottled sandy clay
Minor
Metamorphic > Metasedimentary > Metaclastic > QuartziteGravel consists mainly of quartz and quartzite and range in size from very fine pebbles to large cobbles.
Sedimentary > Clastic > Sandstone (Bed)thin beds of indurated sandstone
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 Lee - Macon - Russell - Tallapoosa