02107oam 2200565 450 991070685350332120180301075913.0(CKB)5470000002458932(OCoLC)896810398(OCoLC)995470000002458932(EXLCZ)99547000000245893220141123d1976 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierCalderas of the San Juan volcanic field, southwestern Colorado /by Thomas A. Steven and Peter W. LipmanWashington :United States Department of the Interior, Geological Survey,1976.1 online resource (iii, 35 pages) illustrations, mapsGeological Survey professional paper ;958Title from title screen (viewed October 2, 2014)."Eighteen major ash-flow tuff sheets were deposited and perhaps as many related calderas developed during emplacement of an underlying shallow batholith in late Oligocene time."Includes bibliographical references (pages 34-35).CalderasSan Juan Mountains (Colo. and N.M.)Volcanic ash, tuff, etcSan Juan Mountains (Colo. and N.M.)BatholithsSan Juan Mountains (Colo. and N.M.)BatholithsfastCalderasfastVolcanic ash, tuff, etcfastUnited StatesSan Juan MountainsfastCalderasVolcanic ash, tuff, etc.BatholithsBatholiths.Calderas.Volcanic ash, tuff, etc.Steven Thomas A(Thomas August),1917-2013,1388925Lipman Peter W.Geological Survey (U.S.),COPCOPOCLCOOCLCFOCLCAGPOBOOK9910706853503321Calderas of the San Juan volcanic field, southwestern Colorado3513326UNINA