Skip to main content

Tuscaloosa Group undifferentiated

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
Primary rock type sand
Secondary rock type clay or mud
Other rock types sandstone; gravel; quartzite
Lithologic constituents
Minor
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.
Sedimentary > Clastic > Sandstone (Bed)thin beds of indurated sandstone
Incidental
Metamorphic > Metasedimentary > Metaclastic > QuartziteGravel consists mainly of quartz and quartzite and range in size from very fine pebbles to large cobbles.
Map references
Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.
Unit references
Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.
Counties Lee - Macon - Russell