Some pedons have a BE or BA horizon. The Bt horizon has hue of 10YR, value of 4 or 5, and chroma of 3 to 6. It is silt loam or silty clay loam. Reaction is neutral or slightly acid. It is clay loam, silty clay loam, or silty clay.
Reaction is neutral to moderately acid.
The 3Bt or 3C horizon has hue of 7.5YR or 10YR, value of 3 to 5, and chroma of 3 or 4. It is silty clay loam or silty clay, or the gravelly or channery analogs of these textures. Clay content ranges from 35 to 75 percent and sand content ranges from 3 to 18 percent. Reaction is slightly acid to moderately alkaline and may contain carbonates. The 3R horizon is typically limestone, dolostone or calcareous fine grained sandstone bedrock.