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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.
StateAlabama
NameTuscaloosa Group undifferentiated
Geologic ageCretaceous
Original map labelKt
Primary rock typesand
Secondary rock typeclay or mud
Other rock typessandstone; gravel; quartzite
Lithologic constituents
Minor
Sedimentary > Clastic > Sandstone (Bed)thin beds of indurated sandstone
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.
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.
Geographic coverageLee - Macon - Russell - Tallapoosa

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