Buladean soils formed from materials weathered from high-grade metamorphic and igneous rocks and contain fragments of those rocks. Cardigan, Lordstown, Steinsburg, and Yalesville soils have hard sedimentary or metasedimentary bedrock at depths less than 40 inches and contain fragments of those rocks. Charlton soils are very deep and formed in glacial till derived mainly from schist, gneiss, or granite. Chestnut and Soco soils have paralithic contact within depths of 20 to 40 inches. Delaware soils are very deep and formed in postglacial alluvium, mainly from areas of sandstone, shale, and siltstone and contain fragments of those rocks.
Edneyville soils are very deep.
Gallimore soils are very deep and formed in loamy over sandy outwash on outwash plains. Newport soils have C horizons of dense glacial till. Riverhead soils have a lithologic discontinuity in the upper 40 inches. Wakeman soils formed in residuum over sandstone bedrock on till plains and lake plains and contain fragments of sandstone. Stecoah soils are on gently sloping to very steep ridges and side slopes of the Southern Appalachian Mountains.