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Slide description: Oblique aerial view across summit crater. Helicopter in view at right. 1509 hrs. Skamania County, Washington. April 10, 1980. No index card available.
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Slide description: Oblique aerial view of southwest flank of Mount St. Helens. Ash being deflated from flank by strong winds. Skamania County, Washington. April 2, 1980. (Plane wing visible at left).
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Album caption: Oblique aerial view of Mount St. Helens amphitheater as viewed from the north on July 22, 1980, sequence (9A-G) (photos nos. 17-23), showing the formation of a pyroclastic density flow during the early part of the third eruptive pulse. A, 1900:59; B, 1901:03 PDT, timed photographs by the author; C, 1901:08 PDT, photo by Harry X. Glicken, time from comparison with a timed photograph that is not shown; D,E,F,G, untimed sequence taken within 30 seconds after C, by Harry X. Glicken. Skamania County. Washington. (See also MSH-July 22, 1980 nos. 69ct-75ct) Published as figure 9-D in U.S. Geological Survey. Professional paper 1335. 1986. Index card unavailable.
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Typed caption accompanying slides: 19:18:25 new pyroclastic flow deposits from third eruptive pulse cover crater floor. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114)...
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Typed caption accompanying slides and index card: Scenic view, at 20:54 hours (PDT), looking northeast at ash plume at dusk. Skamania County, Washington. (Photo by Richard P. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July 22, 1980 eruption of Mount St. Helens were taken by Jim Vallance, who was in a U.S. Forest Service fixed wing aircraft and by Mike Doukas, Harry Glicken and Rick Hoblitt, who were in a U.S. Geological Survey helicopter. There were three major eruptive pulses on July 22, 1980. They began at 17:14, 18:30 and 19:02 PDT.
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Slide description and index card (69ct, 79ct): Mount St Helens in eruption. Oblique aerial view of Mount St. Helens from the northwest: first view of new crater/north side. Photos are within seconds of each other. 20:09 hrs. Skamania County, Washington. May 18, 1980. (Portion of plane wing visible at left).
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Typed caption accompanying slides: 19:01 pyroclastic flow continues to develop, ash fountain increases. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July...
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Slide description and index card: Logging truck, 7.5 miles north-northwest of Mount St. Helens, destroyed by lateral blast of May 18, 1980. Truck was overturned and propelled downslope until restrained by heavy cable installed to anchor other logging equipment. Skamania County, Washington. May 18, 1980. Portion published as upper photo, p. B92 in U.S. Geological Survey. Professional Paper 1240-B. 1981; portion published on p. 691 in U.S. Geological Survey. Professional Paper 1250. 1981.
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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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Slide description: Oblique aerial view of Mount St. Helens summit: phreatic eruption - ash fall and as cloud at right, relatively clean snow in foreground. Skamania County, Washington. April 10, 1980. No index card available.
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Slide description and index card (70ct, 81ct): Mount St. Helens in eruption. Oblique aerial view of Mount St. Helens from the west. Photos are within seconds of each other. 16:33 hrs. Skamania County, WAshington. May 18, 1980. (Tip of plane wing at left).
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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: Telephoto view of summit area of Mount St. Helens viewed from southwest, showing snow darkened by ashfall on north slope. Skamania County, Washington. March 30, 1980. No index card available.
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Album caption: Oblique aerial view of Mount St. Helens amphitheater as viewed from the north on July 22, 1980, sequence (9A-G) (photos nos. 17-23), showing the formation of a pyroclastic density flow during the early part of the third eruptive pulse. A, 1900:59; B, 1901:03 PDT, timed photographs by the author; C, 1901:08 PDT, photo by Harry X. Glicken, time from comparison with a timed pgotograph that is not shown; D,E,F,G untimed sequence taken within 30 seconds after C, Harry X. Glicken. Skamania County, Washington. (See also MSH-July 22, 1980 nos. 69ct-75ct) Published as figure 9-B in U.S. Geological Survey. Professional paper 1335. 1986. Index card unavailable.
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Album caption: Oblique aerial view of Mount St. Helens as viewed from the north sequence (4A-J) showing about the first 30 seconds of the second eruptive pulse of July 22, 1980. Photographer 4A-J (photos nos. 3-12) taken at about 3-second intervals beginning at 1825:20±5 PDT; photograph 4J taken about 6 seconds after 4I. Arrow (4H) indicates projection from pyroclastic fountain. Dashed line (4H) indicates front of pyroclastic density flow. Skamania County, Washington. (Photos by J.W. Vallance; graphics on published photos only; see also MSH-July 22, 1980 nos. 5ct-15ct in USGS Photo Library) Published as figure 4-B in U.S. Geological Survey. Professional paper 1335. 1986. Index card unavailable.


map background search result map search result map Photo of Mount St. Helens after the third eruptive pulse of July 22, showing increased pyroclastic flow and ash fountain. Skamania County, Washington. 1980. Pyroclastic flow deposits from the third eruptive pulse of the Mount St. Helens July 22 eruption. Skamania County, Washington. 1980. Scenic view of Mount St. Helens after the July 22 eruption, looking northeast at ash plume at dusk. Skamania County, Washington. 1980. Young tephra sequence 8 km southeast of the former Mount St. Helens summit. Skamania County, Washington. n.d. Logging truck, 7.5 miles north-northwest of Mount St. Helens, destroyed by lateral blast of May 18. Skamania County, Washington. 1980. Oblique aerial view of Mount St. Helens in eruption, showing the first view of the new crater and north side of the volcano. Skamania County, Washington. 1980. Oblique aerial view of Mount St. Helens in eruption, viewed from the west. Skamania County, Washington. 1980. Oblique aerial view of southwest flank of Mount St. Helens. Skamania County, Washington. 1980. Oblique aerial view down into Mount St. Helens crater showing debris at bottom. Skamania County, Washington. 1980. Oblique aerial view showing both craters at Mount St. Helens summit and septum separating them. Skamania County, Washington. 1980. Oblique aerial view of Mount St. Helens summit phreatic eruption. Skamania County, Washington. 1980. Oblique aerial view looking easterly at Mount St. Helens summit and phreatic eruption. Skamania County, Washington. 1980. Oblique aerial view looking easterly at Mount St. Helens summit and phreatic eruption. Skamania County, Washington. 1980. Oblique aerial view looking southeast, Mount St. Helens phreatic eruption plume continuing to build. Skamania County, Washington. 1980. Oblique aerial view across Mount St. Helens summit crater. Skamania County, Washington. 1980. Telephoto view of summit area of Mount St. Helens viewed from southwest. Skamania County, Washington. 1980. Aerial view into Mount St. Helens summit craters. Skamania County, Washington. 1980. Photo of Mount St. Helens after the third eruptive pulse of July 22, showing increased pyroclastic flow and ash fountain. Skamania County, Washington. 1980. Pyroclastic flow deposits from the third eruptive pulse of the Mount St. Helens July 22 eruption. Skamania County, Washington. 1980. Scenic view of Mount St. Helens after the July 22 eruption, looking northeast at ash plume at dusk. Skamania County, Washington. 1980. Young tephra sequence 8 km southeast of the former Mount St. Helens summit. Skamania County, Washington. n.d. Logging truck, 7.5 miles north-northwest of Mount St. Helens, destroyed by lateral blast of May 18. Skamania County, Washington. 1980. Oblique aerial view of Mount St. Helens in eruption, showing the first view of the new crater and north side of the volcano. Skamania County, Washington. 1980. Oblique aerial view of Mount St. Helens in eruption, viewed from the west. Skamania County, Washington. 1980. Oblique aerial view of southwest flank of Mount St. Helens. Skamania County, Washington. 1980. Oblique aerial view down into Mount St. Helens crater showing debris at bottom. Skamania County, Washington. 1980. Oblique aerial view showing both craters at Mount St. Helens summit and septum separating them. Skamania County, Washington. 1980. Oblique aerial view of Mount St. Helens summit phreatic eruption. Skamania County, Washington. 1980. Oblique aerial view looking easterly at Mount St. Helens summit and phreatic eruption. Skamania County, Washington. 1980. Oblique aerial view looking easterly at Mount St. Helens summit and phreatic eruption. Skamania County, Washington. 1980. Oblique aerial view looking southeast, Mount St. Helens phreatic eruption plume continuing to build. Skamania County, Washington. 1980. Oblique aerial view across Mount St. Helens summit crater. Skamania County, Washington. 1980. Telephoto view of summit area of Mount St. Helens viewed from southwest. Skamania County, Washington. 1980. Aerial view into Mount St. Helens summit craters. Skamania County, Washington. 1980.