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Fission-track ages of late Cenozoic distal tephra beds in the Yukon Territory and Alaska.

Canadian Journal of Earth Sciences
By: , and 

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Abstract

Six distal tephra beds from the Yukon Territory and Alaska were dated by the fission-track method. Assuming that no track fading has occurred in the glass, Old Crow and Dawson tephra beds are <120 000 and <52 000 yr old, respectively. Mosquito Gulch tephra is 1.22 m.y. old, Fort Selkirk tephra is approx 1 m.y. old, the Ester ash bed is 0.45 m.y. old, and the best estimate of the age of Lost Chicken tephra is in the range 1.7-2.6 m.y. It is concluded that application of the fission-track method to distal tephra, in conjunction with detailed characterization studies, offers great potential for elucidation of the Late Cainozoic geological history of Alaska and the Yukon Territory. -P.Br.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Fission-track ages of late Cenozoic distal tephra beds in the Yukon Territory and Alaska.
Series title Canadian Journal of Earth Sciences
Volume 19
Issue 11
Year Published 1982
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Canadian Journal of Earth Sciences
First page 2167
Last page 2178