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Geologic units in Lanier county, Georgia

Pleistocene-Pliocene sands and gravels (Pleistocene-Pliocene) at surface, covers 76 % of this area

Includes, in part, Sunderland, Coharie, and Brandywine "Formations" of Cooke, 1939

Miccosukee Formation (Neogene) at surface, covers 23 % of this area

Miccosukee Formation

Hawthorn Formation (Miocene) at surface, covers 0.4 % of this area

Includes Marks Head Formation; Parachucia Beds (Sloan, 1905); and Alum Bluff Formation (Veatch and Stephenson, 1911).