Perlor soils have mean annual soil temperature of 47 to 52 degrees F., have up to 20 percent platy parapebbles, and do not have hard bedrock within 40 inches. Roic soils have less than 15 percent rock fragments in the control section, have up to 50 percent parapebbles within the control section, and do not have hard bedrock within 40 inches. Slatery soils have 15 to 20 percent pararock fragments in the control section and do not have hard bedrock within 40 inches. Birdsley and Persayo soils have more than 18 percent clay in the control section. Oceanet soils have less than 15 percent rock fragments in the control section and have mean annual soil temperature of 47 to 52 degrees F. Shalet soils have hue of 2.5YR or 5YR and do not have fragments of rhyolitic volcanic rocks in the control section.
Goldyke soils are on hills and pediments.
They formed in residuum and colluvium derived from volcanic rocks such as rhyolite and rhyolitic tuff. Slopes are 2 to 50 percent. Elevations range from 4,500 to 6,200 feet. The mean annual precipitation is 4 to 8 inches, the mean annual temperature is 49 to 53 degrees F., and the frost-free period is 100 to 140 days. These are the Singatse , Stewval , and Theon soils.