Clay content averages 20 to 35 percent in the upper part and averages 20 to 30 percent in the lower part. Reaction is strongly acid to slightly acid. Redoximorphic iron depletions and concentrations have hue of 7.5YR, 10YR, or 2.5Y, value of 2 to 6 and chroma of 1 to 6. Texture is silty clay loam, silt loam, loam or clay loam. Clay content averages 18 to 35 percent and sand content averages 8 to 25 percent.
Reaction is slightly acid to moderately alkaline.
These are the Atterberry , Bethalto , Millbrook , Mulvey , Virgil , and Wauconda series. Atterberry and Bethalto soils average less than 8 percent sand in the lower part of the control section. Millbrook and Virgil soils have some layer in the lower part of the control section that has more than 25 percent sand or more than 1 percent rock fragments. Mulvey soils have more than 14 percent rock fragments in the lower part of the control section. Wauconda soils have free carbonates above a depth of 40 inches.