West., NAD 27. The depth to the base of the argillic horizon is greater than 50 inches. Loess thickness ranges from 20 to 40 inches. The particle-size control section averages between 27 and 35 percent clay. Rock fragments are absent in the loess and range from 1 to 15 percent in the till.
Rock fragments are of mixed lithology with very low content of shale and siltstone.
The Ap or A horizon has hue of 10YR, value of 3 to 5, and chroma typically of 2 or 3 but includes chroma of 4 in eroded pedons that have subsoil material mixed into the Ap horizon. It is silt loam or silty clay loam. Reaction is strongly acid to neutral. An E horizon is present where it has not been mixed into the Ap horizon. A BE horizon is present in some pedons.