The C horizon has hue of 7.5YR to 2.5Y, value of 3 to 6, and chroma of 2 to 4. Texture ranges from loamy sand to coarse sand in the fine-earth fraction, and is commonly stratified. Rock fragments range from 30 to 70 percent, and include up to 10 percent cobbles and stones. Reaction ranges from very strongly acid to moderately acid. Bonaparte soils are slightly alkaline or moderately alkaline in the substratum.
Hinckley soils have rock fragments consisting of granite, gneiss and schist.
Manchester soils have hues of 5YR or redder in the substratum. Mecosta soils have carbonates within a depth of 15 to 40 inches. Multorpor soils have mean annual precipitation ranging from 80 to 120 inches. Quonset soils have rock fragments consisting of phyllite, shale, slate, schist and gneiss. Riker soils have carboliths and pieces of coal or coal slag in the series control section.