Mineral material in this layer amounts to as much as 50 percent of the volume. A thin Ab horizon is present in some pedons. Some pedons have up to 2 inches of limnic material above the C horizon. It is sand, loamy sand, coarse sand, fine sand, loamy coarse sand, loamy fine sand or gravelly sand. It ranges from moderately acid to moderately alkaline.
Carbonates are in some pedons.
These are the Markey series in the same family and the Adrian , Carbondale , Cathro , Dawson , Greenwood , and Rifle series. Markey soils formed in herbaceous plant materials. Adrian soils formed in herbaceous plant material and have mesic soil temperatures. Carbondale, Greenwood, and Rifle soils do not have mineral materials within 51 inches. Cathro soils are loamy.