TY - RPRT TI - 40Ar/39Ar age-spectrum data for hornblende, plagioclase and biotite from tephras collected at Dan Creek and McCallum Creek, Alaska and in the Klondike Placer district near Dawson, Yukon Territory, Canada AU - Michael J. Kunk PY - 1995 DO - 10.3133/ofr95217b UR - https://pubs.usgs.gov/publication/ofr95217B ID - ofr95217B ER -