The lower part of the Bt horizon has hue of 7.5YR or 10YR, value of 4 or 5, and chroma of 3 to 6. Texture is loam or clay loam and their gravelly analogues. Rock fragment content ranges from 0 to 20 percent. Reaction ranges from slightly acid to slightly alkaline. The BC horizon has hue of 10YR, value of 4 or 5, and chroma of 2 to 6.
Texture is sandy loam, fine sandy loam, or loam and their gravelly analogues.
Rock fragment content ranges from 0 to 25 percent. Reaction ranges from slightly acid to slightly alkaline. Some pedons do not have a BC horizon. Some pedons have a 2Bt horizon. The 2BC horizon has hue of 10YR, value of 4 or 5, and chroma of 3 or 4.