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Geologic units in Peach county, Georgia

Eocene undifferentiated (Eocene) at surface, covers 59 % of this area

Highly weathered sands and sandy clays of lower Tertiary age

Ripley Formation (Cretaceous) at surface, covers 17 % of this area

Ripley Formation

Providence Sand (Cretaceous) at surface, covers 16 % of this area

Providence Sand, includes Perote Member

Nanafalia Formation (Paleocene) at surface, covers 4 % of this area

Nanafalia Formation

Cusseta, Blufftown, and Eutaw Formations, undifferentiated (Cretaceous) at surface, covers 3 % of this area

Cusseta, Blufftown, and Eutaw Formations, undifferentiated

Stream alluvium (Quaternary) at surface, covers 0.8 % of this area

Stream alluvium and undifferentiated terrace deposits