Geologic units referred to in Geolex

• Aaron, Accomack, Alligator Back, Aquia, Arch, Archer Creek, Arvonia, Ashe, Bacons Castle, Ball Mountain, Bremo, Brightseat, Buffalo, Buffards, Butlers Bluff, Calvert, Candler, Catoctin, Charles City, Charlottesville, Chesapeake, Chickahominy, Chopawamsic, Choptank, Chowan River, Chuckatuck, Columbia, Cove Creek, Cranberry, Crozet, Dale City, Dalecarlia, Diana Mills, Eastover, Elk Park, Ellisville, Evington, Falls Church, Falls Run, Falmouth, Fauquier, Fido, Fine Creek Mills, Garrisonville, Georgetown, Hancock, Healing Springs, Holly Corner, Hyco, Johnson Mill, Joynes Neck, Kent Island, Konnarock, Lahore, Little River, Lynchburg, Lynnhaven, Marlboro, Mather Gorge, Melrose, Mine Run, Mobley Mountain, Moneta, Moorings, Mount Rogers, Nanjemoy, Nassawadox, Occohannock, Occoquan, Old Church, Old Mill Branch, Old Rag, Pamunkey, Petersburg, Piney Point, Popes Head, Poquoson, Potomac, Quantico, Redoak, Robertson River, Rockfish, Roseland, Sedgefield, Shaeffer Hollow, Shelton, Shirley, Slippery Creek, St. Marys, Station Hills, Striped Rock, Swift Run, Ta River, Tabb, Virgilina, Wachapreague, Windsor, Yorktown