These soils formed in mixed alluvium from rhyolite, andesite and other igneous and sedimentary rocks. Elevations are 4,000 to 6,000 feet. Slopes are 2 to 15 percent. These are the Goldyke , Izo and Wardenot soils. Izo and Wardenot soils lack a cambic horizon.
Goldyke soils are shallow to bedrock.
Present vegetation is mainly galleta, Bailey greasewood, Indian ricegrass, spiny menodora, winterfat, spiny hopsage and shadscale. MLRA 27, 29. These soils are of small extent.