TY - RPRT TI - 40Ar/39Ar ages from the rhyolite of Alder Creek, California: Age of the Cobb Mountain normal-polarity subchron revisited AU - B. D. Turrin AU - J.M. Donnelly-Nolan AU - B. C. Hearn PY - 1994 DO - 10.1130/0091-7613(1994)022<0251:aaaftr>2.3.co;2 UR - https://pubs.usgs.gov/publication/70017919 ID - 70017919 ER -