U-Pb geochronology of two pre-Tertiary plutons in the Coast Mountains Batholith near Ketchikan, southeastern Alaska

G. E. Gehrels, W. C. McClelland, S. D. Samson, J. L. Jackson, P. J. Patchett

Research output: Contribution to journalArticle

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U-Pb geochronologic studies indicate that the central part of the Coast Mountains Batholith in the Ketchikan area contains plutons of Triassic and possibly mid-Paleozoic age in addition to the previously recognized early Tertiary plutons. The presence of these Triassic and possibly mid-Paleozoic plutons supports previous interpretations that pre-Tertiary rocks in this part of the batholith may belong to the Yukon-Tanana terrane. -from Authors

Original languageEnglish (US)
Pages (from-to)894-898
Number of pages5
JournalCanadian Journal of Earth Sciences
Issue number6
StatePublished - Jan 1 1991


ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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