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Geologic units in Wilcox county, Georgia

Neogene undifferentiated (Neogene) at surface, covers 69 % of this area

Includes Altamaha Grit (Dall, 1892); Citronelle Formation (Matson & Berry, 1916); and "Hawthorn Formation" (Cooke, 1939). (*) - outcrops of indurated sandstone and claystone

Suwannee Limestone and its residuum (Oligocene) at surface, covers 26 % of this area

As mapped, includes Chattahoochee Limestone in Seminole and Decatur Cos.; Flint River Formation, in part, (Cooke, 1939); Jacksonboro Limestone in Screven Co.; and Glendon and Marianna Limestones in Pulaski Co.

Stream alluvium (Quaternary) at surface, covers 4 % of this area

Stream alluvium and undifferentiated terrace deposits