The BCg or 2BCg horizon has hue of 10YR or 2.5Y, value of 4 to 6, and chroma 1 or 2. Texture is silty clay loam, silty clay, or clay and can have thin strata of loam or sandy clay loam. Reaction is moderately acid to neutral. The 2C or 2Cg horizon has hue of 10YR, 2.5Y or is neutral, value of 4 to 6, and chroma of 0 to 4. It is laminated or stratified.
Texture is silty clay or clay.
Reaction ranges from moderately acid to slightly alkaline. These are the Lauer , Lieber , Taggart , and Westboro series. Lauer, Lieber, Taggart, and Westboro soils are more than 50 inches to the base of the argillic horizon. Competing series may change as they are updated to the 8th Edition of Keys to Soil Taxonomy. The Tiro series has not been updated to the 8th Edition of the Keys to Soil Taxonomy, but was competing series to Canal under previous taxonomic classification.