The lower part of the control section, to a depth of 60 inches, is limestone bedrock with thin interbedding of soft shale. The A or Ap horizon has a hue of 10YR, value of 4 or 5, and a chroma of 2 to 4. Texture is silty clay loam or silt loam. Reaction is moderately acid to neutral. The Bt horizons has hue of 10YR or 7.5YR, value of 4 or 5, chroma of 4 to 6.
Texture is silty clay loam, clay loam, clay, or silty clay.
Reaction is strongly acid to neutral. The 2Bt horizon has hue of 10YR, 2.5Y or 5Y, value of 4 to 6, chroma of 2 to 6. Texture is channery analogues of silty clay, or clay. Reaction is slightly alkaline to moderately alkaline. The 2BCt has a hue of 10YR, 2.5Y or 5Y, value of 4 to 6, and chroma of 2 to 6.