02062oam 2200529 450 991070620110332120170816093450.0(CKB)5470000002454411(OCoLC)891598538(OCoLC)995470000002454411(EXLCZ)99547000000245441120140929d1965 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierGeomorphology of the Shenandoah Valley, Virginia, and West Virginia, and origin of the residual ore deposits /by John T. HackWashington :United States Department of the Interior, Geological Survey,1965.1 online resource (iv, 84 pages) illustrations, maps +3 platesGeological Survey professional paper ;484Title from title screen (viewed September 29, 2014)."A geomorphological study in which it is assumed that the erosion and downwasting of the central Appalachians were continuous and uninterrupted by periods of baseleveling."Includes bibliographical references (pages 77-79) and index.GeologyShenandoah River Valley (Va. and W. Va.)GeologyWest VirginiaGeologyVirginiaOre depositsShenandoah River Valley (Va. and W. Va.)Ore depositsWest VirginiaOre depositsVirginiaShenandoah River Valley (Va. and W. Va.)GeologyGeologyGeologyOre depositsOre depositsOre depositsHack John T(John Tilton),1913-1991,1400331Geological Survey (U.S.),COPCOPOCLCOGPOBOOK9910706201103321Geomorphology of the Shenandoah Valley, Virginia, and West Virginia, and origin of the residual ore deposits3504908UNINA