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Geologic units in Evans county, Georgia

Neogene undifferentiated (Neogene) at surface, covers 63 % of this area

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

Pleistocene-Pliocene sands and gravels (Pleistocene-Pliocene) at surface, covers 26 % of this area

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

Wicomico Shoreline Complex - marsh and lagoonal facies (Pleistocene) at surface, covers 10 % of this area

Wicomico Shoreline Complex - marsh and lagoonal facies

Aeolian sand deposits - parabolic dunes (Quaternary) at surface, covers 0.9 % of this area

Aeolian sand deposits - parabolic dunes