Barx, Clovis, Solirex and Wineg soils have calcic horizons with more than 15 percent calcium carbonate equivalent. Millett soils have solums less than 20 inches thick and skeletal material below the argillic horizon. Progresso and Threetop soils have a lithic contact at depths of 20 to 40 inches. Selpats soils have skeletal material within a depth of 40 inches. Bk horizons more than 40 inches thick.
Tuweep soils have pyroclastic material and have skeletal material in the lower part.
Maysdorf soils are on gently to moderately sloping fan remnants, terraces, and hillslopes. Slopes range from 0 to 15 percent. These soils formed in stratified alluvium or eolian deposits derived from mixed sources. The mean annual precipitation is 10 to 14 inches. The mean annual temperature is 45 to 50 degrees F. Elevation is 3800 to 5500 feet.