Fission-track ages of late Cenozoic distal tephra beds in the Yukon Territory and Alaska.
Canadian Journal of Earth Sciences
- By:
- N.D. Naeser, J.A. Westgate, O.L. Hughes, and T.L. Pewe
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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