Calcium carbonate equivalent is 20 to 55 percent. These are the Ayrshire , Capac , Crawleyville , Digby , Jimtown , Mitiwanga , Shadeland , and Whitaker series. Ayrshire, Capac, Crawleyville, and Whitaker soils have less than 15 percent rock fragments in the third part and lower part of the control section. Digby and Jimtown soils have subhorizons that are finer than loamy sand in the lower part of the control section. Mitiwanga and Shadeland soils have a lithic contact at less than 40 inches.
Sleeth soils are on outwash terraces, stream terraces, and outwash plains.
The slope gradient is 0 to 2 percent. Sleeth soils formed in loamy outwash underlain by calcareous gravelly and sandy outwash in areas of Wisconsinan glaciation. A loess surface mantle is as much as 20 inches thick in some areas. The well drained Fox, Ockley, and Nineveh soils are on terrace risers and on swells on outwash plains. The moderately well drained Thackery soils are on swells on outwash plains and higher lying treads on terraces.