Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6442662 | Quaternary Geochronology | 2015 | 18 Pages |
Abstract
The new cosmogenic ages differ considerably from published 40Ar/39Ar and 36Cl ages and reveal that the post-caldera flows were erupted during relatively brief periods of effusive activity spread over an interval of â¼4 ka. The average eruption rate over this interval is estimated to be 0.01Â km3/ka. Because the last eruption was at least 4Â ka ago, and the longest repose interval between the 10 youngest eruptions is â¼1Â ka, we consider the most recent period of effusive activity to have ended.
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Authors
David E.F. Parmelee, Philip R. Kyle, Mark D. Kurz, Shasta M. Marrero, Fred M. Phillips,