Rock fragments range from 2 to 30 percent in the Ap and Bt horizons, from 5 to 70 percent in the BC horizon, and from 45 to 90 percent in the C horizon. Rock fragments increase with depth and average slightly less than 35 percent in the upper 20 inches of the argillic horizon. The soil ranges from very strongly to moderately acid in the solum, unless limed, and is strongly or moderately acid in the C horizon. The Ap horizon has hue of 10YR, value of 3 through 5, and chroma of 2 or 3. In undisturbed areas the A horizon has hue of 10YR, value of 3 or 4, and chroma of 2 or 3.
Texture ranges from loam to silty clay loam in the fine-earth fraction.
Some pedons have a thin E horizon with hue of 10YR, value of 4 or 5, and chroma of 3 or 4. Texture ranges from loam to silty clay loam in the fine-earth fraction. The B horizon has hue of 7.5YR or 10YR, value of 4 or 5, and chroma of 4 through 8. Texture ranges from silty clay loam to loam in the fine-earth fraction. Clay films range from faint to prominent and continuous to few on faces of peds and rock fragments and in pores.