TY - RPRT TI - Mesozoic magmatism and timing of epigenetic Pb-Zn-Ag mineralization in the western Fortymile mining district, east-central Alaska: Zircon U-Pb geochronology, whole-rock geochemistry, and Pb isotopes AU - Cynthia Dusel-Bacon AU - J.N. Aleinkoff AU - W. C. Day AU - J.K. Mortensen PY - 2015 DO - 10.1130/ges01092.1 UR - https://pubs.usgs.gov/publication/70148404 ID - 70148404 ER -