Some boulders exceed six feet in diameter. The soil is slightly acid to neutral. Textures are cobbly loamy sand and bouldery loamy coarse sand. The rock fragment content is 15 to 35 percent with 3 to 15 percent boulders, stones, cobbles, and 15 to 30 percent pebbles. The organic carbon content is 0.4 to 0.6 percent.
Textures are very cobbly, very stony, sandy loam or sandy clay loam.
Clay films are thin to moderately thick and are few to many. The clay content ranges from 10 to 25 percent, but averages 10 to 18 percent. Breko and Cowgil soils have Bk horizons. Daint, Hunewill and Hefed depth to base of Bt horizon is less than 20 inches thick. Jungo soils have 20 to 30 percent clay in the control section.