Thickness of the solum and depth to hard rock ranges from 4 to 20 inches. Stones, boulders and associated rock outcrop occupy from 0.1 to 50 percent of the soil surface. Rock fragment content in the Bt horizon ranges from 35 to 60 percent. The A horizon has hue of 10YR, value of 2 to 4, and chroma of 2 to 4. It is cobbly silt loam, very cobbly silt loam, gravelly silt loam or very gravelly silt loam.
Reaction is slightly acid to very strongly acid.
The Bt1 or BA horizon has hue of 7.5YR or 10YR, value of 4 and chroma of 2 to 6. It is very gravelly silt loam or very cobbly silt loam. Reaction is medium acid to very strongly acid. The Bt2 horizon has hue of 10YR or 7.5YR, value of 4 or 5 and chroma of 4 to 6. It is very cobbly or very gravelly analogues of silt loam or silty clay loam.