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"The 1980 Mount St. Helens Eruption". Archived from the original on 14 July 2014. Mount St Helens (audio slideshow). Archived from the original on 14 July 2014. Volcanologist Sarah Henton discusses the Cascade Mountains and explains the geology and impact of the 1980 Mount St Helens eruption. (duration 6:29 min) Mount St. Helens (3D model).
The Eruption of Mount St. Helens! – documentary movie about the eruption; St. Helens - television movie about the eruption; Geology of the Pacific Northwest; Helenite – An artificial glass marketed as a gemstone, made by fusing the volcanic dust from Mount St. Helens's May 1980 eruption; List of Cascade volcanoes
Seismologists hadn't monitored earthquake activity in the Mount St. Helens area until seismometers were installed near the volcano in 1972, and from January 1975 through early 1980, only 44 ...
The Mount St. Helens Visitor Center at Silver Lake, about 30 miles (48 km) west of Mount St. Helens and five miles (8 km) east of Interstate 5 (outside the monument), opened in 1987 by then-Vice President George H.W. Bush. The center was formerly operated by the U.S. Forest Service and has been operated by Washington State Parks since October 2007.
Located in southern Washington state, Mount St. Helens is notorious for its eruption on May 18, 1980. The eruption of stratovolcano led to earthquakes and a massive landslide. University ...
View the Mount St. Helens Fast Facts on CNN and learn more about the volcano in Washington.
During the May 18, 1980 eruption of Mount St. Helens, Spirit Lake received the full impact of the lateral blast from the volcano. The blast and the debris avalanche associated with this eruption temporarily displaced much of the lake from its bed and forced lake waters as a wave as much as 850 ft (260 m) above lake level on the mountain slopes ...
The Yn tephra is a geologically recent tephra deposit that covers portions of the U.S. state of Washington and the Canadian provinces of British Columbia and Alberta.It was created by the largest known volcanic eruption from Mount St. Helens, having taken place in possibly 1860 BCE as part of the Smith Creek eruptive period.