There are 5YR or redder hues within the upper part of the argillic horizon as either matrix color or mottles. Texture of the 2Bt and 2BC horizons is clay loam or clay. The upper 20 inches of the argillic horizon averages 36 to 48 percent clay and more than 20 percent sand. Reaction is very strongly acid to neutral. The 2C horizon is clay loam, loam or silty clay loam with more than 15 percent sand.
Reaction is slightly acid to mildly alkaline.
These are the Kilkenny and Ladoga soils. Kilkenny soils do not have 5YR hue in the upper part of the argillic horizon. Ladoga soils have less than 5 percent sand throughout the solum and have less red colors in the upper part of the argillic horizon. Armster soils are on the upper valley convex side slope and low convex ridge positions where geologic erosion has exhumed the late Sangamon paleosol formed in glacial till. Slope gradients dominantly range from 5 to 12 percent but have an extreme range of 2 to 25 percent.