Volcanoes
The Eruption of Mount Saint Helens
One day in October 1857, the people of Carson, Washington, saw something very unusual. They watched Mount St. Helens come to life as ash and steam come out of it. It killed 57 people and covered miles with ash. It had been dormant until May 18, 1980 when it exploded in one of the most violent eruptions ever recorded in North America. A severe earthquake earlier that day opened a crack along the …
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…Encyclopædia Britannica Premium Service 16 June 2005 <http://www.britannica.com/eb/article?tocId=24460>
4: Article by Beth Geiger. "Hot Spots" appears on pages 10-15 of our May 2004 issue National Geographic 16 June 2005 http://magma.nationalgeographic.com/ngexplorer/0405/articles/mainarticle.html
5: Smithsonian/ USGS Weekly Volcanic Activity Report - This Weekly Report was prepared by Jennifer N. Adleman, Alaska Volcano Observatory, US Geological Survey. 16 June 2005 http://www.volcano.si.edu/reports/usgs/
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