TY - BOOK AU - Bradley,Dwight C AU - Dumoulin,Julie A. AU - Bradley,Dan B. ED - Geological Survey (U.S.), TI - U-Pb geochronology and tectonic implications of a silurian ash in the Farewell terrane, Alaska T2 - Professional paper PY - 2018/// CY - Reston, Virginia PB - U.S. Department of the Interior, U.S. Geological Survey KW - Volcanic ash, tuff, etc KW - Alaska KW - Paleontology KW - Silurian KW - Geological time KW - Uranium-lead dating N1 - CRDP Program record; Includes bibliographical references (pages 10-12) UR - https://purl.fdlp.gov/GPO/gpo115165 ER -