The 2Bt horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 3 to 6. Texture is clay loam or clay. Reaction ranges from very strongly acid to neutral. The 2BC horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 3 to 6. Texture is clay loam or clay.
Reaction ranges from strongly acid to slightly alkaline.
The 2Cd horizon has hue of 10YR or 2.5Y, value of 4 or 5, and chroma of 2 to 4. Texture is loam. Reaction is slightly alkaline or moderately alkaline. The calcium carbonate equivalent ranges from 25 to about 50 percent. Aaron, Alsup, and Vincent soils have more than 27 percent clay in the lower part of the series control section.