All of these soils except Schulenburg lack carbonates within 30 inches of the soil surface. In addition, Chickasha, and Stoneburg soils are less 60 inches deep to bedrock. Ravia soils are formed in granitic material and have granite fragments throughout the profile. Schulenburg soils have secondary carbonates at 22 to 36 inches and do not have redoximorphic depletions. Teller soils are more acid throughout the Bt horizon.
Teval soils have a lower clay activity class.
Waynoka soils have a lithologic discontinuity between 30 and 60 inches. Carman soils are on nearly level to very gently sloping remnants of old terraces that have been partially covered by more recent sandier sediments. They formed in calcareous, loamy, old alluvium. Slopes range from 0 to 3 percent. Mean annual precipitation ranges from 26 to 30 inches.