Juniata Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Upper Ordovician
 .....Juniata Formation
RTVirginia
 Pennsylvania
 Maryland
 West Virginia
 Tennessee
 Richmond Group
SNIncludes East Waterford Red Sandstone Member, Plummer Hollow Red Mudstone, Run Gap Red Sandstone Member. S central and E Pennsylvania, W Maryland, E Tennessee, W Virginia, and E West Virginia.