The Gem series consists of moderately deep, well drained soils that formed in material weathered from basalt or other basic igneous rocks. Gem soils are on uplands and have slopes of 0 to 60 percent.
Permeability is slow.
The average annual precipitation is about 14 inches and the average annual temperature is about 47 degrees. Gem silty clay loam - grass and sagebrush. These are the Banner , Flowell , and Gemson series. Banner, Flowell, and Gemson soils are deeper than 40 inches to bedrock. Also, Flowell soils have a weakly to strongly cemented horizon of high accumulation of lime.