Mississinewa soils have carbonates within a depth of 16 inches in uneroded pedons. Mortimer and Wyatt soils average more than 35 percent clay in the lower part of the control section. Pert soils have mean annual soil temperature of less than 50 degrees F. Shinrock soils do not have rock fragments in the lower part of the control section. Glynwood soils are on summits, shoulders, and backslopes on Wisconsin Age till plains, moraines, and dissected areas of lake plains. They formed in clay loam or silty clay loam till of high calcium carbonate content.
Some areas have a thin loess mantle.
Slope is typically 2 to 18 percent, but ranges from 0 to 40 percent. Elevation is 800 to 1000 feet. The frost-free period is 150 to 170 days. These are the somewhat poorly drained Blount , well drained Lybrand and Morley , and very poorly drained Pewamo soils that are in a toposequence with the Glynwood soils. Blount soils are in lower landscape positions.