Cincinnati soils have mixed coarse fragments from glacial till in the lower part of the solum. Grantsburg and Hosmer soils formed in loess do not have stratification in the lower part of the solum, and do not contain coarse fragments. Hildebrecht soils have fragments of chert in the lower part of the solum. Lawrenceville soils have a more mottled fragipan and do not have silty coatings in the upper part of the fragipan. Otwell soils have stratified materials at depths of less than 40 inches and typically are less acid in the B and C horizons.
Rainsboro soils have a higher content of gravel and sand in the lower part of the solum.
Zanesville soils have lower part of the sola formed in sandy loam residuum weathered from acid sandstone. Monongahela soils contain more sand in the control section and have a lower base saturation at 30 inches below the top of the fragipan. Omulga soils are in valley fills in an abandoned preglacial drainage system of the Allegheny Plateau. Slope gradients are 0 to 15 percent. The soils formed in loess, colluvium or old alluvium, and in most areas by underlying lacustrine sediments.