The soil has an aridic moisture regime that borders on ustic. Texture is fine sandy loam, loam, silt loam, clay loam or very fine sandy loam. Reaction ranges from neutral through strongly alkaline. Some pedons when buffered by gypsum are moderately alkaline. A thin Bt horizon is present above the Btn in some pedons.
Textures are clay, clay loam, silty clay, or silty clay loam.
This horizon contains 4 to 15 percent calcium carbonate equivalent. Some pedons when buffered by gypsum are moderately alkaline. Exchangeable sodium typically ranges from 10 to 30 percent but decreases with increasing depth. Some pedons have a C horizon. Some pedons have a C horizon below 40 inches.