Bailegap soils have a Cr horizon and angular sandstone, siltstone, or shale fragments throughout the profile. Gunstock and Lily soils have hard bedrock within 60 inches. Jefferson soils have hues of 7.5YR or yellower and no rock fragments in the B horizon. Lonewood soils have sola that are greater than 50 inches thick and silty B horizons. Riney soils have thicker sola and have formed in residuum from sandstone and shale.
Sunnyside soils are on uplands in the northern part of the inner Atlantic Coastal Plain.
Slopes are complex and range from 0 to 50 percent. The soil formed in unconsolidated sandy sediments of low to moderate clay content and low silt content. The climate is humid temperate, mean annual temperature is 48 to 58 degrees F., and mean annual precipitation is 38 to 44 inches. These are the competing Sassafras , and the Christiana , Collington , Keyport and Muirkirk soils. Christiana have sola more than 60 inches thick and more than 35 percent clay in the Bt horizon.