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Following the May 2005 acid crater lake flood at Chiginagak volcano, DGGS has been monitoring crater lake water that flows into Indecision Creek, Mother Goose Lake, and the King Salmon River.This data table provides information on water samples collected between 2005 and 2011 near Chiginagak volcano, including:sample ID, latitude, longitude, location description, pH, and cation and anion chemistry results.
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This data lists the historically active volcanoes of Alaska and the year of the last major eruptive event. The volcanoes listed meet at least one of the following criteria since 1700 CE: (1) documented, unquestioned eruption, or (2) a strongly suspected eruption, often an eruption documented in the historical account with very little information (current geologic knowledge must not contradict the eruption account), or (3) persistent (usually on the order of decades, but certainly longer than several months) fumaroles, with temperatures (where measured) within ~10 degrees C of the boiling point, or (4) significant, measured, volcanic-related, non-eruptive deformation, (5) documented earthquake swarm with strongly...
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Historic image LS_0749 is part of the 'UVA lantern slides' collection; the topic area is 'Volcanoes'. Location is OR (imprecise). The image has the following description: 'Crater Lake, Oregon, Wizard Island .' The image was scanned from a lantern slide as part of the USGS NGGDPP deliverable for 2017-2018. The physical location is 900 Natural Resources Dr., Ste 400, Charlottesville, VA 22903. Library. The author is unknown. The image is dated unknown.
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Historic image LS_0675 is part of the 'UVA lantern slides' collection; the topic area is 'Volcanoes'. Location is Martinique (imprecise). The image has the following description: 'Broken volcanic block, Seche, Martinique .' The image was scanned from a lantern slide as part of the USGS NGGDPP deliverable for 2017-2018. The physical location is 900 Natural Resources Dr., Ste 400, Charlottesville, VA 22903. Library. The author is unknown. The image is dated unknown.
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Index card: Three other Cascade volcanoes are visible from Mount St. Helens - Mt. Adams to the east. Any one of these Cascade peaks has the potential for becoming another active volcano. Yakima County, Washington. September 23, 1983.
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Index card, no. 217ct-264ct: Group of oblique aerial views of Mount St. Helens in eruption; time taken runs from 1326 hrs to 1815 hrs. Photos include near and distant views, eruption and eruption plume, pyroclasitc flows, ash. Skamania County, Washington. May 18, 1980. (Various amounts of plane wing or window frame visible in most views).
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Index card: Spirit-level tilt station next to Mount St. Helens dome. Skamania County, Washington. May 20, 1982. (Photo by Donald A. Swanson)
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Album caption, slide description, and slide index card: MSH-Branch of Exhibits no. 12cp: Mount St. Helens. Aerial view of mudflow deposits and damage along the north bank, North Fork Toutle River. Cowlitz County, Washington. May 26, 1980. (Photo by D. Dzurisin) (Same as MSH-BE-VOLC-0026ct) (msh_boe_volc0026_ct).
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Album caption, slide description, and slide index card: MSH-Branch of Exhibits no. 19cp: Mount St. Helens. Aerial view of barren slope devastated by May 18 eruption. Skamania County, Washington. June 1980. (Photo by J. DeVine) (Same as MSH-BE-VOLC-0033ct) (msh_boe_volc0033_ct).
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Album caption, slide description, and slide index card: MSH-Branch of Exhibits no. 8cp: Mount St. Helens. Aerial view. Minor steam eruption from summit crater, from northeast, 10:15 a.m. Skamania County, Washington. May 31, 1980. (Photo by T. Casadevall) (Same as MSH-BE-VOLC-0022ct)
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Slide description and index card: Aerial photographs of the lava dome that extruded into the crater of Mount St. Helens during the latter part of June 1980.The volcano's dacite lava has a pasty consistency when it is molten, and it tends to pile up rather than to flow laterally. This dome, which was largely destroyed in a subsequent eruption on July 22, 1980, was, at this stage, about 1,200 feet across and 200 feet high. Its rough, shattered appearance resulted mainly from the expansion and shattering of the solidified outer crust as more molten lava was forced upward by the great pressure in the magma chamber underlying the volcano. B, View from the west over the crater rim from a helicopter taking geologists to...


map background search result map search result map Coldwater Ridge ash. Mount St. Helens, Skamania County, Washington. 1980. Shoestring Glacier, southeast side of Mount St. Helens. Skamania County, Washington. 1970. Historically active volcanoes of Alaska Summit crater lake observations, and the location, chemistry, and pH of water samples near Mount Chiginagak volcano, Alaska: 2004-2011 Geologic image from the Virginia Department of Mines, Minerals and Energy. UVA lantern slides Collection, LS_0675, Martinique Geologic image from the Virginia Department of Mines, Minerals and Energy. UVA lantern slides Collection, LS_0749, OR Aerial view of minor steam eruption from Mount St. Helens summit crater. Skamania County, Washington. 1980. Oblique aerial view of Mount St. Helens in eruption. Skamania County, Washington. 1980. Aerial view of mudflow deposits and damage to the north bank of the North Fork Toutle River. Mount St. Helens, Cowlitz County, Washington. 1980. Aerial view of barren slope devastated by May 18 eruption of Mount St. Helens. Skamania County, Washington. 1980. Aerial view of explosion pit on pumice plain. Mount St. Helens, Skamania County, Washington. 1980. View of Mt. Adams to the east, taken from Mount St. Helens. Yakima County, Washington. 1983. Aerial view from the west over the crater rim from a helicopter taking geologists to collect samples and measure temperatures inside the crater. Mount St. Helens, Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1982. Mount St. Helens. Skamania County, Washington. 1980. Summit crater lake observations, and the location, chemistry, and pH of water samples near Mount Chiginagak volcano, Alaska: 2004-2011 Aerial view of mudflow deposits and damage to the north bank of the North Fork Toutle River. Mount St. Helens, Cowlitz County, Washington. 1980. Coldwater Ridge ash. Mount St. Helens, Skamania County, Washington. 1980. Shoestring Glacier, southeast side of Mount St. Helens. Skamania County, Washington. 1970. Aerial view of minor steam eruption from Mount St. Helens summit crater. Skamania County, Washington. 1980. Oblique aerial view of Mount St. Helens in eruption. Skamania County, Washington. 1980. Aerial view of barren slope devastated by May 18 eruption of Mount St. Helens. Skamania County, Washington. 1980. Aerial view of explosion pit on pumice plain. Mount St. Helens, Skamania County, Washington. 1980. Aerial view from the west over the crater rim from a helicopter taking geologists to collect samples and measure temperatures inside the crater. Mount St. Helens, Skamania County, Washington. 1980. Mount St. Helens. Skamania County, Washington. 1982. Mount St. Helens. Skamania County, Washington. 1980. View of Mt. Adams to the east, taken from Mount St. Helens. Yakima County, Washington. 1983. Historically active volcanoes of Alaska