Eocene Ar40-Ar39 age data of supposed Cretaceous volcanics (Rhyolite Tuff formation) in northeastern Sonora, Mexico

  • Spencer G. Lucas New Mexico Museum of Natural History and Science, New Mexico, U.S.A.
  • William C. McIntosh New Mexico Bureau of Mines Resources, Socorro, New Mexico, U.S.A.
  • Carlos Manuel González-León Estación Regional del Noroeste, Instituto de Geología, Universidad Nacional Autónoma de México, Hermosillo, Sonora, México
Keywords: Isotopic geochemistry, volcanism, 40Ar/39Ar dating, Sonora, Mexico.

Abstract

Single-crystal laser-fusion 40Ar/39Ar techniques were used to determine the eruptive age of a rhyolitic tuff that immediately overlies the Upper Cretaceous Cabullona Group in northeastern Sonora, Mexico… in order to continue, download the full paper in PDF.

Published
2019-01-14
Issue
Vol 13 No 2 (1996)
Section
Regular Papers

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