01741nam 2200457I 450 991071188710332120190124110055.0(CKB)5470000002487207(OCoLC)1083264928(EXLCZ)99547000000248720720190124d2018 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierU-Pb geochronology and tectonic implications of a silurian ash in the Farewell terrane, Alaska /by Dwight C. Bradley, Julie A. Dumoulin, and Dan B. BradleyReston, Virginia :U.S. Department of the Interior, U.S. Geological Survey,2018.1 online resource (iii, 12 pages) color illustrations, color mapsProfessional paper ;1814-FIncludes bibliographical references (pages 10-12).Studies by the U.S. Geological Survey in Alaska, volume 15Uranium lead geochronology and tectonic implications of a silurian ash in the Farewell terrane, AlaskaVolcanic ash, tuff, etcAlaskaPaleontologySilurianGeological timeUranium-lead datingVolcanic ash, tuff, etc.PaleontologyGeological time.Uranium-lead dating.Bradley Dwight C1403293Dumoulin Julie A.Bradley Dan B.Geological Survey (U.S.),GPOGPOBOOK9910711887103321U-Pb geochronology and tectonic implications of a silurian ash in the Farewell terrane, Alaska3475638UNINA