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Bookmark or Share- 1980 eruption of Mount St. Helens - WikipediaOn March 27, 1980, a series of volcanic explosions and pyroclastic flows began at Mount St. Helens in Skamania County, Washington, United States. A series of phreatic blasts occurred from the summit and escalated until a major explosive eruption took place on May 18, 1980, at 8:32 am.
- Mount St. Helens - WikipediaMount St. Helens (known as Lawetlat'la to the local Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, [1] in the Pacific Northwest region of the United States. It lies 52 miles (83 km) northeast of Portland, Oregon, [2] and 98 miles (158 km) south of Seattle. [3] .
- Mount St. Helens | U.S. Geological Survey - USGS.govMount St. Helens is primarily an explosive dacite volcano with a complex magmatic system. The volcano was formed during four eruptive stages beginning about 275,000 years ago and has been the most active volcano in the Cascade Range during the Holocene.
- Mount St. Helens National Volcanic Monument - WikipediaMount St. Helens National Volcanic Monument is a U.S. National Monument that includes the area around Mount St. Helens in Cowlitz and Skamania Counties, Washington. It was established on August 27, 1982, by U.S. President Ronald Reagan, following the 1980 eruption. [2]
- Mount Saint Helens | Location, Eruption, Map, & Facts | BritannicaMount Saint Helens, volcanic peak in the Cascade Range, southwestern Washington, U.S. Its eruption on May 18, 1980, was one of the greatest volcanic explosions ever recorded in North America. A total of 57 people and thousands of animals were killed in the event.
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