Geologic units in Dougherty county, Georgia

Ocala Limestone (Eocene) at surface, covers 85 % of this area

Generally covered with Oligocene and Eocene residuum (Flint River Formation of Cooke, 1939); includes up-dip area, Tivola Limestone of Connell (1955). (*)- outcrops of Ocala Limestone on Dougherty Plain.

Stream alluvium (Quaternary) at surface, covers 7 % of this area

Stream alluvium and undifferentiated terrace deposits

Suwannee Limestone and its residuum (Oligocene) at surface, covers 6 % 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.

Neogene undifferentiated (Neogene) at surface, covers 2 % of this area

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

Aeolian sand deposits - formless deposits (Quaternary) at surface, covers 0.6 % of this area

Aeolian sand deposits - formless deposits