The Btg horizon is silty clay loam or silty clay. The Cg horizon has hue of 10YR, 2.5Y or 5Y, value of 4 to 6, and chroma of 1 or 2. Redoxmorphic features have hue of 10YR, 2.5Y, 5Y or 7.5YR, value of 4 to 6, and chroma of 1 to 8. It commonly is silt loam, but the range includes silty clay loam. Clay content ranges from 20 to 30 percent.
Reaction ranges from moderately acid to moderately alkaline.
These are the Ames , Pierron , Watchung , Wynoose , and Zwingle series. Ames and Wynoose soils average more than 5 percent sand in the lower part of the series control section. Pierron soils have a mean annual soil temperature of more than 56 degrees F. Watchung soils formed in residuum and are less than 40 inches to the base of the argillic horizon. Zwingle soils average more than 45 percent clay in the particle size control section. Rushville soils are on nearly level summits or depressions on till plains.