Alaska Volcano Observatory
Seguam reported activity
EVENT SPECIFIC INFORMATION
Event Name : Seguam 1700 yBP
|Start: 1700 (± 500 Years) || Years BP U-Th || |
|Lava dome: ||
From Jicha and Singer (2006): "The 1710 dome (str), the westernmost outcrop of postcollapse rhyolites, abuts the southern margin of the crater rim. Glass + magnetite + orthopyroxene + whole rock from this dome gave a U-Th mineral isochron age of 1.7+/-0.5 ka (Jicha and others, 2005)."
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