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Eruptions from Mount Adams began about 520 ka, although scattered basaltic eruptions from the surrounding volcanic field began by about 940 ka.
History of Mt. Adams
The Active Volcano in Washington; Mount Rainier
Mount Adams Pacific Northwest Seismic Network
WA100: A Washington Geotourism Website
WA100: A Washington Geotourism Website
What to Know About Washington State's Five 'Threatening' Volcanoes
Eruption History of Mount Adams
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