Gravel content ranges from 5 to 35 percent, with most of it concentrated in the surface inch. Organic carbon content is 0.2 to 0.35 percent. The soil is slightly acid to slightly alkaline. Textures are coarse sand, sand, loamy sand, gravelly loamy sand, gravelly coarse sand, or gravelly sand. Clay content is 1 to 5 percent.
Stratification is present in some pedons.
Pumice and obsidian content ranges from 5 to 35 percent. The soil is neutral or slightly alkaline. Buscones soils are 20 to 40 inches deep over soft tuff. Deepwell soils formed in aeolian dunes consisting mostly of fine sand and lack pumice and obsidian gravel. Brantel soils are on alluvial fans, fan terraces, lake terraces, valley floors, inset fans on hills, volcanic flows and tablelands, mountainous uplands and around cinder cones at elevations of 5,300 to 7,600 feet.