It is predominantly sandstone deposited during the Paleogene Period.

[1] Middle Eocene layers, mostly marine or coastal in origin, are found in west central Georgia and compose the Claiborne Group.

The Tallahatta Formation is mainly composed of sandstone and clays that formed on land in river systems.

Above the Tallahatta is the Lisbon Formation, composed mainly of fossil-bearing clays, fine sands, and limestones that formed as the rising sea level caused the sea to flood over the nonmarine Tallahatta.

This article about a specific stratigraphic formation in Georgia is a stub.