Effervescence - Noneffervescent in the upper part, strongly effervescent to violently effervescent in the substratum in most pedons. Reaction - Moderately alkaline or strongly alkaline. Averages 35 to 55 percent gravels, mainly of volcanic origin. Averages loamy sand, sand or loamy coarse sand with strata of sandy loam. The 2Bk horizon is highly stratified in most pedons.
Annaw soils are calcareous throughout.
Labkey and Pumper soils lack summer precipitation, in addition Labkey soils contain 3 to 9 percent clay in the particle-size control section and contain 15 to 30 percent gravel size fragments mainly 2 to 5 mm across and of granitic origin. Toulon soils lack summer precipitation and have 15 to 30 percent cobbles as well as relict oxide mottles in the substratum. The Lyx soils are on inset fans, alluvial fans and fan skirts at elevations of 4,800 to 6,800 feet. They formed in alluvium derived mainly from intermediate volcanic rocks. Slopes are 2 to 8 percent.