A Cascade Range volcano is one that is part of a series of mountains in western North America that includes an arc of volcanoes. The Cascade Range extends from British Columbia through Washington and Oregon to northern California.Continue Reading
According to the United States Geological Survey, the Cascade Range volcanoes include the following:
Washington: Mount Adams, Mount Baker, Glacier Peak, Mount Rainier, and Mount St. Helens
Oregon: Mount Bailey, Belknap Shield Volcano, Crater Lake (Mount Mazama), Mount Hood, Mount Jefferson, Mount McLoughlin, Newberry Caldera, Mount Thielsen, Three Sisters; and California: Lassen Peak, Mount Shasta.
Mount Mazuma is the name given to the volcano that erupted about 8,000 years ago and subsequently collapsed to form Crater Lake.
A well-known Cascade Range volcano, Mount St. Helens famously erupted in May 1980 after an earthquake measuring 5.1 on the Richter scale shook its foundation. The earthquake triggered a collapse of the volcano's north face, and the subsequent avalanche of stone triggered the pressurized gases within the volcano to explode and send the falling debris into a wind that leveled 150 square miles of surrounding forest. The eruption lasted nine hours, although the initial explosions altered the volcano itself and the surrounding landscape instantaneously. The volcano continued to erupt periodically until 1986.Learn more about Volcanoes
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