Elliber soils weathered from cherty limestone and do not have very hard, very firm B horizons. Gainesboro and Trevlac soils have sedimentary bedrock at less than 40 inches. Hartleton soils have sola thinner than 40 inches and bedrock at 40 to 65 inches. Irondale soils are in residuum from igneous rocks, are 20 to 40 inches to bedrock, and have dominantly cobbly textures. Lew soils have friable B horizons and fragments of greenstone.
Mertz soils have angular rock fragments of chert and sandstone.
Pattenburg soils have sola less than 40 inches thick and friable B horizons. Weverton soils are in slope creep materials over residuum and are confined to the Blue Ridge Anticlinorium. Croom soils are on dissected uplands of the northern Atlantic Coastal Plain. They are on dissected convex slopes, hillsides, and hilltops. Slopes range from 0 to 40 percent.