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Slide description: Aerial view into Mount St. Helens summit craters; septum between two craters still exists. Skamania County, Washington. April 2, 1980. No index card available.
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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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Slide description and index card: Young tephra sequence 8 km southeast of the former summit. Pale dacite tephras (sets Y and P) are overlain by tephras of Castle Creek and younger periods that include dark andesite tephras of layers Bh and Bo, pale dacite pumice of layer Bi that is about 1,000 yr old, dark basalt tephras of layer Bu, and white dacite pumice of set W. Skamania County, Washington. n.d. (Photo by R.P. Hoblitt). Published as Figure 5 in U.S. Geological Survey. Professional Paper 1250. 1981.
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Slide description: View of massive debris-avalanche deposit. Geologist Don Swanson (face not visible) in foreground in red jacket for scale. Cowlitz County, Washington. May 22, 1980. (Photo by P.W. Lipman). No index card available. Portion published on p. 345 in U.S. Geological Survey. Professional Paper 1250. 1981.
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Slide desription and index card (10ct and 11ct): Paintings showing a comparison of the shape of Mount St. Helens (A) at the time of the March 27 eruption and (B) just before the May 18 eruption shows the large outward displacement of the bulge area. The view here is from the northeast. Skamania County, Washington. 1980. (Graphics on published photos only) (Paintings by Dee Molenaar). Photo no. 10ct published as Figure 15-A and photo no. 11ct published as Figure 15-B in U.S. Geological Survey. Professional Paper 1249. 1982.
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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: Effects of the May 18 mudflows in the vicinity of Mount St. Helens. C, Mudflows destroyed nearly all the bridges that crossed streams draining from the northern, northeastern, and northwestern parts of Mount St. Helens. This lack of stream crossings greatly hampered ground rescue and recovery efforts. The steel highway bridge shown in photo no. 35ct (msh_1249_00035_ct) was formerly at the site shown in this photo, on the North Fork Toutle River 23 miles downstream from headwaters on Mount St. Helens. Aerial view. Cowlitz County, Washington. May 20, 1980. (Photo by Philip Carpenter). Published as Figure 31-C in U.S. Geological Survey. Professional Paper 1949. 1982.
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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...
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Photomicrograph of holocrystaline slag. Montana. Plate 3 in U.S. Geological Survey. Professional paper 108. 1918.
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Album caption: View near El Tovar and Bright Angel Trail. Pueblo Indian House. (1914) Grand Canyon National Park, Coconino County. Index card: Indian pueblo at Grand Canyon.
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Slide description and index card: Mount St. Helens. Diagrammatic cross-section, pre-eruption, winter 1979-80. Skamania County, Washington. 1980.
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Panorama with images 620, 621, and 622. The Sawtooth Range from 12 miles south of Stanley. Shows the flat of the Stanley River, and the timbered foothills and the glacier denuded peaks of the Sawtooth Range. Rock is granite. Custer County, Idaho. August 21, 1926.
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The Livingston Mine, Bayhorse Region, Idaho. Shows main approach to the workings. Rock is Milligen formation. Custer County, Idaho. September 10, 1929.
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Panorama with images 619, 620, and 621. The Sawtooth Range from 12 miles south of Stanley. Shows the flat of the Stanley River, and the timbered foothills and the glacier denuded peaks of the Sawtooth Range. Rock is granite. Custer County, Idaho. August 21, 1926.


map background search result map search result map Mount St. Helens barely visible through the fog. Skamania County, Washington. 1983. Young tephra sequence 8 km southeast of the former Mount St. Helens summit. Skamania County, Washington. n.d. Aerial view of Mount St. Helens summit region. Goat Rocks dome near center. Skamania County, Washington. 1979. Native pueblo at Grand Canyon. Grand Canyon National Park, Arizona. 1914. Aerial view of minor steam eruption from Mount St. Helens summit crater. 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. View of Mt. Adams to the east, taken from Mount St. Helens. Yakima County, Washington. 1983. View of massive debris-avalanche deposit. Mount St. Helens, Cowlitz County, Washington. 1980. Paintings showing a comparison of the shape of Mount St. Helens at the time of the March 27 eruption, and just before the May 18 eruption. Skamania County, Washington. 1980. Effects of the May 18 mudflows in the vicinity of Mount St. Helens. Cowlitz 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. Ash distribution from Mount St. Helens eruption of May 18, 1980, showing distribution by average depth/thickness. Washington and Oregon. 1980. Aerial view into Mount St. Helens summit craters. Skamania County, Washington. 1980. Aerial view looking south into Mount St. Helens crater. 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. View of massive debris-avalanche deposit. Mount St. Helens, Cowlitz County, Washington. 1980. Effects of the May 18 mudflows in the vicinity of Mount St. Helens. Cowlitz County, Washington. 1980. Mount St. Helens barely visible through the fog. Skamania County, Washington. 1983. Young tephra sequence 8 km southeast of the former Mount St. Helens summit. Skamania County, Washington. n.d. Aerial view of Mount St. Helens summit region. Goat Rocks dome near center. Skamania County, Washington. 1979. Aerial view of minor steam eruption from Mount St. Helens summit crater. Skamania County, Washington. 1980. Aerial view of barren slope devastated by May 18 eruption of Mount St. Helens. Skamania County, Washington. 1980. Paintings showing a comparison of the shape of Mount St. Helens at the time of the March 27 eruption, and just before the May 18 eruption. 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. Aerial view into Mount St. Helens summit craters. Skamania County, Washington. 1980. Aerial view looking south into Mount St. Helens crater. Skamania County, Washington. 1980. View of Mt. Adams to the east, taken from Mount St. Helens. Yakima County, Washington. 1983. Native pueblo at Grand Canyon. Grand Canyon National Park, Arizona. 1914. Ash distribution from Mount St. Helens eruption of May 18, 1980, showing distribution by average depth/thickness. Washington and Oregon. 1980.