Lyonman and Newlands soils are noncalcareous and slightly acid and medium acid. Michelson and Philipsburg soils have a calcic horizon. Bt horizon and a C horizon that has 35 to 70 percent stones. Bk horizons more than 17 inches thick. Monida soils have a lithologic discontinuity above 40 inches.
Gelkie soils are on glacial moraines, outwash fans, mountainsides, and high terraces.
Slopes range from 0 to 45 percent. The soils formed in glacial till, glacial outwash, colluvium, or in reworked sandy alluvium. The mean annual temperature is 34 to 42 degrees F., and the mean annual precipitation is 15 to 20 inches. Frost-free period is 50 to 75 days. Elevation is 7,000 to 10,000 feet.