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ImageDetailsVolcanoesKeywords
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Caption:Cinder cone (cross section, center of view) exposed at Lava Bight, south end of Lava Point lava field, Akutan Volcano.
Date:July 15, 1996 12:00 AM
Photographer:McGimsey, Game
AkutanCinder cone
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Caption:A bubble bursts at a small, boiling hot springs on the flank of Makushin Volcano. Hot springs and fumaroles may form when groundwater is heated by a magmatic source.
Date:July 14, 1996 12:00 AM
Photographer:Roach, A. L.
MakushinHot Springs
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Caption:Seismic Station, Akutan
Date:July 13, 1996 12:00 AM
Photographer:McGimsey, Game
AkutanFieldwork operations, Seismic/GPS installation
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Caption:A geologist exposes layers of ash and pumice intercalated with soil on the lower slopes of Makushin Volcano. The layers are indicative of numerous episodes of Holocene eruptions.
Date:July 12, 1996 12:00 AM
Photographer:Roach, A. L.
MakushinPeople in action, Stratovolcano, Tephra, Volcano
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Caption:Geologist stands near a large, dune-like feature in the surge deposits on the flank of Makushin Volcano.
Date:July 12, 1996 12:00 AM
Photographer:Beget, J.
MakushinPeople in action, Pyroclastic flow
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Caption:Layers of surge deposits blanket a bomb on the slopes of Sugarloaf, a flank vent of Makushin Volcano. Rock hammer is for scale.
Date:July 11, 1996 12:00 AM
Photographer:Roach, A. L.
MakushinBomb
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Caption:Surge deposits exposed on Sugarloaf, a flank vent of Makushin Volcano. These deposits may be indicative of the explosive interaction of lava with groundwater. Trowel is for scale. View is from the northeast.
Date:July 11, 1996 12:00 AM
Photographer:Roach, A. L.
MakushinDebris flow/mudflow/landslide/lahar, Fieldwork operations
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Caption:View down the "Lava Ramp" of Makushin Volcano. The Lava Ramp is an unusually large, homogenous package of lava flows filling a pre-existing glacial valley. View is from the south.
Date:July 11, 1996 12:00 AM
Photographer:Roach, A. L.
MakushinLava flow, Stratovolcano, Volcano
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Caption:A geologist views the upper portion of Makushin Valley, east of Makushin Volcano. The valley has been filled with a thick sequence of Holocene pyroclastic flows, surges, and fall deposits. View is from the northeast.
Date:July 11, 1996 12:00 AM
Photographer:Roach, A.
MakushinDebris flow/mudflow/landslide/lahar, People in action, Pyroclastic flow, Stratovolcano, Volcano
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Caption:A layer of ash is exposed in melting snow on the upper slopes of Makushin volcano. The ash is composed primarily of hydrothermally altered rock which gives it a distinctive grey color. View is from the southwest.
Date:July 7, 1996 12:00 AM
Photographer:Roach, A. L.
MakushinStratovolcano, Tephra, Volcano
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Caption:Pakushin, a flank vent of Makushin Volcano, is a cinder cone that was constructed during the Pleistocene. Okmok caldera is visible in the distance. View is from the east.
Date:July 7, 1996 12:00 AM
Photographer:Roach, A. L.
Makushin, OkmokStratovolcano, Volcano
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Caption:Broad summit of Makushin Volcano as seen from the north side of Unalaska Island. Smoke from the summit fumaroles is faintly just left of center of summit. The sharp ridges to the right are the result of Pleistocen to Holocene glaciation of the volcano massif. Broad grassy foreground are Holocene andesite that reach the Bering Sea.
Date:July1996 12:00 AM
Photographer:McConnell, V. S.
MakushinFumarolic activity, Stratovolcano, Volcano
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Caption:Digging an ash section in last year's snow on the south flank of Makushin Volcano, northern Unalaska Island. The ash was deposited during very recent phreatomagmatic eruptions from Makushin Volcano. Note the crevasses in the glacier directly behind geologist Angela Roach, AVO.
Date:July1996 12:00 AM
Photographer:McConnell, V. S.
MakushinGlacier, People in action, Stratovolcano, Tephra, Volcano
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Caption:Beginning a sling operation with seismic hut, King Cove.
Date:July1996 12:00 AM
Photographer:McGimsey, Game
ArrayFieldwork operations, People in action, Seismic/GPS installation
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Caption:Guy Tytgat at station DRR2. The volcano in the background is Dutton.
Date:July1996 12:00 AM
Photographer:McNutt, Steve
DuttonFieldwork operations, People in action, Seismic/GPS installation, Volcano
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Caption:View of the lava dome built during the 1990 eruptions of Redoubt Volcano.
Date:June 4, 1996 12:00 AM
Photographer:Neal, C. A.
RedoubtDome, Stratovolcano, Volcano
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Caption:View of the lava dome built during the 1990 eruptions of Redoubt Volcano.
Date:June 4, 1996 12:00 AM
Photographer:Neal, C. A.
RedoubtDome, Stratovolcano, Volcano
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Caption:Aerial view of the bottom of Crater Peak.
Date:June 4, 1996 12:00 AM
Photographer:Neal, C. A.
SpurrStratovolcano, Volcano
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Caption:John Eichelberger with a group of AVO students at the rim of Katmai caldera. From left to right: Angie Roach, John Eichelberger, Darren Chertkoff, Michelle Coombs, Peter Stelling, Kirby Bean, Pavel Izbekov. Photograph is taken by Maggie Mangan.
Date:June1996 12:00 AM
Photographer:Izbekov, Pavel
KatmaiCaldera/crater, Fieldwork operations, Lake, People in action, Volcano
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Caption:Seguam 1996. Looking East from Finch Point. Photograph courtesy of Steve Ebbert.
Date:June1996 12:00 AM
Photographer:Ebbert, Steve
SeguamCaldera/crater, Tephra, Volcano
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Caption:Shishaldin Volcano.
Date:May 16, 1996 12:00 AM
Photographer:McNutt, S. R.
ShishaldinStratovolcano, Tephra, Volcano
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Caption:Shishaldin Volcano.
Date:May 16, 1996 12:00 AM
Photographer:McNutt, S. R.
ShishaldinCaldera/crater, Steam, Stratovolcano, Tephra, Volcano
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Caption:Shishaldin Volcano.
Date:May 16, 1996 12:00 AM
Photographer:McNutt, S. R.
ShishaldinCaldera/crater, Steam, Stratovolcano, Tephra, Volcano
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Caption:Shishaldin Volcano.
Date:May 16, 1996 12:00 AM
Photographer:McNutt, S. R.
ShishaldinCaldera/crater, Stratovolcano, Tephra, Volcano
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Caption:Shishaldin Volcano.
Date:May 16, 1996 12:00 AM
Photographer:McNutt, S. R.
ShishaldinCaldera/crater, Stratovolcano, Tephra, Volcano
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