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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
Looking into the crater, the camera captured hourly photographs of volcanic dome growth during the 2004-2008 eruption. The station also captured the advance of the west arm of Crater Glacier as it moved northeast around the 1980-1986 and 2004-2008 lava domes, joined with the east arm of the glacier, and pushed northward onto the crater floor.
[13]: 215 An eruption in 1900 BC was the largest known eruption from St. Helens during the Holocene epoch, depositing the Yn tephra. [ 13 ] : 215 [ 31 ] This eruptive period lasted until about 1600 BC and left 18 inches (46 cm) deep deposits of material 50 miles (80 km) distant in what is now Mount Rainier National Park .
On the morning of May 18, 1980, photographer Robert Landsburg hiked 7 miles from the summit of Mount St. Helens in the Cascades mountain range. As the lens of his camera viewed the snowy cap of ...
Helenite, also known as Mount St. Helens obsidian, emerald obsidianite, and ruby obsidianite, is a glass made from the fused volcanic rock dust from Mount St. Helens and marketed as a gemstone. [ 1 ] [ 2 ] Helenite was first created accidentally after the eruption of Mount St. Helens in 1980 .
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 ...
More than 400 earthquakes have been detected beneath Washington's Mount St. Helens in recent months, though there are no signs of an imminent eruption, according to the U.S. Geological Survey ...
Mount St. Helens, once the fifth-tallest peak in Washington State, lost about 1,300 feet from its height of 9,677, according to the USGS. The highest part of the crater rim on the southwestern ...