TY - RPRT TI - U-Th-Pb isotope chronology of sulfide ores and rocks in the early Proterozoic metavolcanic belt of northern Wisconsin AU - A. Afifi AU - B. R. Doe AU - P.K. Sims AU - M.H. Delevaux PY - 1984 DO - 10.2113/gsecongeo.79.2.338 UR - https://pubs.usgs.gov/publication/70013342 ID - 70013342 ER -