Geologic units in Peach county, Georgia

Stream alluvium (Quaternary) at surface, covers 0.8 % of this area: Stream alluvium and undifferentiated terrace deposits
Lithology: alluvium; alluvial terrace
Cusseta, Blufftown, and Eutaw Formations, undifferentiated (Cretaceous) at surface, covers 3 % of this area: Cusseta, Blufftown, and Eutaw Formations, undifferentiated
Lithology: sand; clay or mud
Ripley Formation (Cretaceous) at surface, covers 17 % of this area: Ripley Formation
Lithology: clay or mud; sand; limestone
Providence Sand (Cretaceous) at surface, covers 16 % of this area: Providence Sand, includes Perote Member
Lithology: sand
Nanafalia Formation (Paleocene) at surface, covers 4 % of this area: Nanafalia Formation
Lithology: sand; clay or mud
Eocene undifferentiated (Eocene) at surface, covers 59 % of this area: Eocene undifferentiated, highly weathered sands and sandy clays of lower Tertiary age
Lithology: sand; clay or mud