Very dark grayish brown colors are restricted to horizons less than 8 inches thick. The A1 horizon is slightly acid to strongly acid. Mottles in shades of gray are common to many. The Bt horizon averages at least 20 percent more clay than the overlying A horizon. It is strongly acid or very strongly acid.
Mottles are in shades of brown.
The IIB' is strongly acid to extremely acid. These are Augusta and Yemassee series in the same family and Kullit , Leaf , Lumbee , Myatt , Ogeechee , Sawyer , and Sylacauga series. Leaf soils have clayey family textures and dominantly 1 or 2 chroma throughout the B horizon. Sawyer soils have fine-silty over clayey textures and have dominant chromas of 4 or more in the B horizon. Summerfield soils are on nearly level to very gently sloping uplands of the Gulf Coastal Plain.