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ImageDetailsVolcanoesKeywords
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Caption:An ash burst from Shishaldin. The view is from the NNW.
Date:April 23, 1999 12:00 AM
Photographer:McGimsey, R. G.
ShishaldinEruption cloud/ plume/ column, Stratovolcano, Tephra, Volcano
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Caption:Shishaldin 1999.
Date:April 23, 1999 12:00 AM
Photographer:McGimsey, R. G.
ShishaldinVolcano, Stratovolcano, Tephra, Eruption cloud/ plume/ column
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Caption:Shishaldin 1999.
Date:April 23, 1999 12:00 AM
Photographer:McGimsey, R. G.
ShishaldinVolcano, Stratovolcano, Tephra, Eruption cloud/ plume/ column
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Caption:Looking south over the surface of Turquoise Lake. Plumes of warm water stir sediment and give the lake its characteristic blue-green color. The lake is ~2km wide, and drains to the south (far end of lake in this image).
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:AVO scientist Dr. Jim Gardner stands on the southern crest of Mt. Finch, looking southwest at the snow covered peaks of Westdahl volcano (far left), Faris Peak (center) and Pogromni volcano (right). The snow-free peak on the left is a pre-caldera stratocone cut in half by caldera collapse during the caldera forming eruption 9,400 years ago.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Faris Peak, Finch, Mt, Fisher, Pogromni, WestdahlCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Looking northeast over most of Fisher caldera. Mt. Finch, the most recently active vent at Fisher, is in the foreground on the right. The lake in the foreground is the western caldera lake; the lake in the middle ground is the east caldera lake, and the cliff at the far end of this lake is the eastern caldera wall. Shishaldin and Isanotski volcanoes in the background (right and far right, respectively).
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Fisher, Isanotski, Shishaldin, Finch, MtCaldera/crater, Hot Springs, Lake, Volcano
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Caption:A group of small cinder cones outside southeast rim of Fisher caldera. The largest cone, on the left, is about 300 m high. These cones formed during a single eruption and produced a lava flow (red area in foreground) that traveled ~9km southward, nearly reaching the Pacific Ocean. In the background is the eastern caldera lake (far right), the eastern caldera wall, and the low area outside the eastern caldera (center). View is to the north.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Looking east over the eastern half of Fisher caldera. Shishaldin (left) and Isanotski volcanoes are in the background. The eastern caldera lake is on the left, and the far end of this lake marks the eastern caldera wall. The caldera wall is also seen as the dark ridge in the middle ground. Note the blonde phreatomagmatic surge deposits that cap all prominent ridges in the eastern portion of the caldera. The likely source of these surge deposits is the maar crater just south (right) of the eastern caldera lake. The summit of Mt. Finch, with a small crater lake, is in the foreground. Blonde areas on Mt. Finch are hydrothermally altered areas from fumarolic activity rather than surge deposits.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Finch, Mt, Fisher, Isanotski, ShishaldinCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Eickelberg Peak being surrounded by incoming fog. Eickelberg Peak is one of several pre-caldera stratovolcanoes partially destroyed in the caldera-forming eruption 9,400 years ago. The western caldera lake is in the foreground; view to NW.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Eickelberg Peak (Cone 8), FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Mt. Finch (foreground), Turquoise Lake (left) and the western caldera lake (right). Turquoise Cone and the western caldera rim are obscured by clouds in the background. Small lake in the foreground is the crater lake in the summit of Mt. Finch. View to the W.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Finch, Mt, FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Rising steam highlights the trace of a warm stream fed by hot spring water in the southwestern caldera floor, just south of Turquoise Cone. The hottest spring temperatures measured in 2000 were >110 oF.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:The hottest of several hot springs in the southwestern portion of the caldera, just south of Turquoise Cone. The hottest spring temperatures measured in 2000 were >110 F. This spring is about 10 meters wide.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Maar craters on the southern shores of the eastern caldera lake at Fisher volcano. The interaction of magma and groundwater can be violent, and rapidly expanding steam can excavate a crater called a maar. The eastern caldera wall is in the background.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Maar/tuff cone/tuff ring, Volcano
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Caption:Pyroclastic surge deposits within the caldera east of Mt. Finch. These deposits were formed during a violent phreatomagmatic eruption caused by the interaction of magma and water. The vent for this eruption was likely one of the maar craters on the southern shore of the eastern caldera lake and ~5 km east of Mt. Finch. Similar deposits, although not as thick and often less laminated, are found in most areas of Fisher volcano.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Scenic view of Iron Trig Cone. Photo courtesy of Wes Hildreth/USGS.
Date:1999 12:00 AM
Photographer:Hildreth, E. W.
Iron Trig coneCinder cone, Volcano
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Caption:Kaguyak Volcano
Date:August 27, 1998 12:00 AM
Photographer:Miller, T. P.
KaguyakCaldera/crater, Volcano
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Caption:Roundtop
Date:August 24, 1998 12:00 AM
Photographer:McGimsey, R. G.
RoundtopVolcano
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Caption:Terminus of pyroclastic flow from 1912 Novarupta eruption. Taken from Confluence Overlook. Katmai National Park and Preserve.
Date:July1998 12:00 AM
Photographer:Adleman, Jennifer
NovaruptaPyroclastic flow
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Caption:Bogoslof
Date:June 13, 1998 12:00 AM
Photographer:Sease, John
Bogoslof
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Caption:Bogoslof
Date:June 13, 1998 12:00 AM
Photographer:Seese, John
Bogoslof
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Caption:Semisopochnoi, looking north at cinder cone and Sugarloaf Peak. Image courtesy of Ian L. Jones, Department of Biology, Memorial University.
Date:June 9, 1998 12:00 AM
Photographer:Jones, I. L.
Semisopochnoi, Sugarloaf PeakCinder cone, Stratovolcano, Volcano
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Caption:Semisopochnoi, looking northeast at cinder cone. Base of Sugarloaf Peak is visible at the left of the image. Image courtesy of Ian L. Jones, Department of Biology, Memorial University.
Date:June 9, 1998 12:00 AM
Photographer:Jones, I. L.
Semisopochnoi, Sugarloaf PeakCinder cone, Stratovolcano, Volcano
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Caption:Semisopochnoi, view of Sugarloaf Head (in foreground) and Sugarloaf Peak (in background). Image courtesy of Ian L. Jones, Department of Biology, Memorial University.
Date:June 9, 1998 12:00 AM
Photographer:Jones, I. L.
Semisopochnoi, Sugarloaf PeakCinder cone, Stratovolcano, Volcano
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Caption:Semisopochnoi, looking northeast at cinder cones and base of Sugarloaf Peak. Image courtesy of Ian L. Jones, Department of Biology, Memorial University.
Date:June 9, 1998 12:00 AM
Photographer:Jones, I. L.
Semisopochnoi, Sugarloaf PeakCinder cone, Stratovolcano, Volcano
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Caption:Mount Griggs stratovolcano, Valley of Ten Thousand Smokes. At 7,650 ft (2,330 m) ASL, Mount Griggs is the highest peak in Katmai National Park and Preserve. It lies 12 km behind the main volcanic front, and its summit is home to superheated sulfur-precipitating fumaroles.
Date: 9, 1998 12:00 AM
Photographer:Adleman, Jennifer
GriggsVolcano
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