Loess thickness ranges from 0 to 18 inches. It is silt loam, loam, silty clay loam, or clay loam. Reaction is strongly acid to neutral. It is commonly clay loam or clay, and less commonly silty clay loam or silty clay. It averages from 35 to 50 percent clay and from 15 to 25 percent sand.
Reaction is very strongly acid to slightly alkaline.
Rock fragment content is 1 to 10 percent. Calcium carbonate equivalent ranges from 20 to 30 percent, and bulk density ranges from 1.7 to 1.9. These are the Alexandria , Brushcreek , Lairdsville , Lucas , Markham , Ozaukee , Schoharie , and St. Clair series. Alexandria soils do not have dense till within 40 inches. Brushcreek soils have a paralithic contact at 40 to 60 inches.