The Bt horizon has hue of 7.5YR or 10YR, value of 4 through 6, and chroma of 4 through 8. The Bt horizon is sandy loam, fine sandy loam, loam, clay loam, or sandy clay loam in the fine-earth fraction. Most pedons have a subhorizon of the Bt that is brittle and somewhat compact in as much as 40 percent of the mass. This brittle or compact layer commonly has few to many pale brown, very pale brown, or light yellowish brown iron depletions and slightly lower clay content than overlying or underlying horizons. The BC or CB horizon, where present, has hue of 2.5YR through 10YR, value of 4 through 6, and chroma of 4 through 8.
Texture is sandy loam, fine sandy loam, loam, or sandy clay loam in the fine- earth fraction.
The C horizon has hue of 2.5YR through 10YR, value of 4 through 6, and chroma of 4 through 8, or it is varieagated with masses of Fe accumulation. Texture ranges from loamy sand through sandy clay loam in the fine-earth fraction. The Apison, Biffle, Hartsells, Linker, Oktaha, and Sipsey soils have a lithic or paralithic contact within 40 inches of the surface. Cahaba, Nauvoo, Ogeechee , and Smithdale soils have 5YR or redder hue in the Bt horizon. Durham soils have more weatherable minerals such as mica and feldspar in the lower part of the B horizon and a C horizon of saprolite.