The Bt horizon averages about 32 to 35 percent clay with a maximum of about 38 percent in any subhorizon. The BC horizon averages about 27 to 32 percent clay. The C horizon has colors similar to the lower part of the Bt and the BC horizon. In many areas, especially on the lower parts of the landscape 2Ab and 2Btgb horizons are present. Colors are variable but typically are grayish with redox concentrations present.
Textures are also variable but increases in clay and sand content are evident.
Hedrick soils have ochric epipedons that have color value and chroma moist of 3 or less. Iona soils have a thinner solum and contain carbonates at 40 to 50 inches. Rocheport soils have lithic or paralithic contact within a depth of 60 inches. Inton soils are on short convex to straight sideslopes and coves of drainageways surrounding the nearly level stable upland divides in the loess covered pre-Wisconsin till plain. The loess is 4 to 8 or more feet thick and is underlain by a gray or grayish, loamy or clayey paleosol.