Redoximorphic iron depletions and concentrations have hue of 7.5YR, 10YR, or 2.5Y, value of 2 to 6 and chroma of 1 to 8. Texture is silty clay loam, silty clay, or silt loam. Reaction is strongly acid to neutral in the upper part and slightly acid to moderately alkaline in the lower part. Redoximorphic iron depletions and concentrations have hue of 7.5YR, 10YR, or 2.5Y, value of 2 to 6 and chroma of 1 to 8. Average clay content ranges from 18 to 27 percent.
Reaction is slightly acid to moderately alkaline.
These are the Bevier , Lerdal , and Mexico soils. Bevier soils have more than 8 percent sand in the lower part of the series control section. Lerdal soils average more than 1 percent rock fragments in the middle and lower parts of the series control section. Mexico soils have at least one subhorizon in the argillic horizon that contains more than 52 percent clay . Clarksdale soils are on summits and side slopes on loess-mantled ground moraines.