Mayberry soils have hue redder than 10YR in the middle part of the series control section. Timewell soils are on summits and sideslopes on till plains. Slope gradients range from 0 to 5 percent. They formed in 5 to more than 20 feet of loess. These are the Clarksdale , Ipava , Newvienna , Osco , Rubio , and Virden soils.
Clarksdale soils have a thinner dark surface soil, and are closer to dissecting drainageways.
Ipava soils are on similar landform positions, and do not have an E horizon. Osco and Newvienna soils average less clay in the particle-size control section, are moderately well drained, and are on similar and more sloping landform positions. Rubio and Virden soils are poorly drained, and on slightly lower to depressional landform positions. In addition, Rubio soils have a thinner dark surface soil, and Virden soils do not have an E horizon. Somewhat poorly drained.