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New Dates on Late Pleistocene Dacitic Tephra from the Mount Edgecumbe Volcanic Field, Southeastern Alaska

Published online by Cambridge University Press:  20 January 2017

James E. Begét  and
Roman J. Motyka
James E. Begét
Affiliation:
Department of Geology and Geophysics, University of Alaska, Fairbanks, Alaska, 99775
Roman J. Motyka
Affiliation:
School of Science, University of Alaska–Southeast, Juneau, Alaska, 99801
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Abstract

New radiocarbon dates on charcoal incorporated in proximal airfall deposits indicate the largest late Pleistocene eruption from the Mt. Edgecumbe volcanic field in Southeast Alaska occurred ca. 11,250 ± 50 14C yr B.P. The more precise dating of the principal Edgecumbe tephra layer greatly improves its utility as a tephrochronologic marker horizon in southeastern Alaska.

Keywords

tephrasoutheast AlaskaMt. Edgecumbe volcanoYounger Dryas
Type
Short Paper
Information
Quaternary Research , Volume 49 , Issue 1 , January 1998 , pp. 123 - 125
Copyright
University of Washington

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