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Science 12 March 1982:
Vol. 215. no. 4538, pp. 1389 - 1390
DOI: 10.1126/science.215.4538.1389
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Articles

Recent Volcanic Activity at Glacier Peak

JAMES E. BEGET 1

1 Department of Geological Sciences, University of Washington, Seattle 98105

Previous reports suggested that Glacier Peak, a volcano in northern Washington State, has been dormant for the past 11,000 years. New radiocarbon dates for volcanic deposits indicate that major volcanic events, such as tephra eruptions, pyroclastic flows, and mudflows traveling tens of kilometers, occurred at least five times in the past 1800 years and nine times in the past 5500 years.

Submitted on June 16, 1981
Revised on December 7, 1981

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Science. ISSN 0036-8075 (print), 1095-9203 (online)