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Geologic units in Emanuel county, Georgia

Neogene undifferentiated (Neogene) at surface, covers 95 % 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 - parabolic dunes (Quaternary) at surface, covers 3 % of this area

Aeolian sand deposits - parabolic dunes

Cooper Marl (Eocene) at surface, covers 1 % of this area

It is now recognized that this unit is not the precise lithologic or biostratigraphic equivalent of type Cooper Marl (Huddlestun, Marsalis & Pickering, 1974).

Twiggs Clay (Eocene) at surface, covers 0.9 % of this area

Twiggs Clay