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Geologic units in Chatham county, Georgia

Holocene Shoreline Complex - marsh and lagoonal facies (Holocene) at surface, covers 32 % of this area

Holocene Shoreline Complex - marsh and lagoonal facies

Pamlico shoreline complex - marsh and lagoonal facies (Pleistocene) at surface, covers 29 % of this area

Pamlico shoreline complex - marsh and lagoonal facies

Pamlico shoreline complex - barrier island facies (Pleistocene) at surface, covers 14 % of this area

Pamlico shoreline complex - barrier island facies

Talbot shoreline complex - marsh and lagoonal facies (Pleistocene) at surface, covers 7 % of this area

Talbot shoreline complex - marsh and lagoonal facies

Princess Anne shoreline complex - marsh and lagoonal facies (Pleistocene) at surface, covers 5 % of this area

Princess Anne shoreline complex - marsh and lagoonal facies

Silver Bluff shoreline complex (Pleistocene) at surface, covers 5 % of this area

Silver Bluff shoreline complex

Holocene Shoreline Complex - barrier island facies (Holocene) at surface, covers 4 % of this area

Holocene Shoreline Complex - barrier island facies

Talbot shoreline complex - barrier island facies (Pleistocene) at surface, covers 1.0 % of this area

Talbot shoreline complex - barrier island facies

Tidal Marsh (Quaternary) at surface, covers 0.9 % of this area

Peat and muck deposits along tidal margins of esturaries and back bays. Deposits range from a few feet to 60+ feet deep. Locally include silt and fine sand and clay as levees on tidal channels. At depth peaty material may be accumulated from fresh water plants. Peat at the surface dominated by spartina and other salt tolerant species.

Princess Anne shoreline complex - barrier island facies (Pleistocene) at surface, covers 0.7 % of this area

Princess Anne shoreline complex - barrier island facies

Stream alluvium (Quaternary) at surface, covers 0.6 % of this area

Stream alluvium and undifferentiated terrace deposits

Penholoway shoreline complex - barrier island facies (Pleistocene) at surface, covers < 0.1 % of this area

Penholoway shoreline complex - barrier island facies