02331oam 2200637 450 991070581470332120170907131740.0(CKB)5470000002454274(OCoLC)891581564(OCoLC)995470000002454274(EXLCZ)99547000000245427420140929d1963 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierCrystalline rocks of the Potomac River Gorge near Washington, D.C. /by John C. Reed, Jr., and Janice JollyWashington :United States Department of the Interior, Geological Survey,1963.1 online resource (iii, H16 pages) illustrations, maps +2 platesGeological Survey professional paper ;414-HContributions to general geologyTitle from title screen (viewed September 24, 2014)."A description of the rocks exposed in the gorge of the Potomac River below Great Falls, with a discussion of their structural and metamorphic history."Includes bibliographical references (page H16).Crystalline rocksWashington Metropolitan AreaCrystalline rocksPotomac River ValleyGeologyWashington Metropolitan AreaGeologyPotomac River ValleyGeology, StratigraphicPaleozoicCrystalline rocksfastGeologyfastGeology, StratigraphicfastPaleozoic Geologic PeriodfastWashington (D.C.)fastCrystalline rocksCrystalline rocksGeologyGeologyGeology, StratigraphicCrystalline rocks.Geology.Geology, Stratigraphic.Paleozoic Geologic Period.Reed John CalvinJr.,1930-1384915Jolly Janice L. W.Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910705814703321Crystalline rocks of the Potomac River Gorge near Washington, D.C3515728UNINA