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Snowy Mountain volcano

Stratovolcanoes 2162 m / 7,093 ft
United States, Alaska Peninsula, 58.34°N / -154.68°W
Current status: normal or dormant (1 out of 5) | Reports
Snowy Mountain volcano books
Typical eruption style: sin especificar
Erupciones del volcán Snowy Mountain: 1710 ± 200 years
Fecha / HoraRevista / ProfundidadDistanciaUbicación
Fri, 7 Aug 2020
Fri, 7 Aug 11:38 UTCM 1.2 / 3 km14 km98 km NNW of Karluk, Alaska (USA)
Fri, 7 Aug 08:49 UTCM 0.5 / 4.6 km9 km93 km NNW of Karluk, Alaska (USA)
Sat, 1 Aug 2020
Sat, 1 Aug 03:07 UTCM 1.77 km93 km N of Karluk, Alaska (USA)
Sun, 19 Jul 2020
Sun, 19 Jul 16:42 UTCM 0.7 / 1.2 km6 km91 km N of Karluk, Alaska (USA)
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Background:

Glacier-covered, 2161-m-high Snowy Mountain, located 15 km NE of Mount Katmai, is the SW-most of a chain of closely spaced volcanoes extending NE along the crest of the Alaska Range. More than 90% of the compound Snowy volcano is mantled by glacial ice, which prompted the naming of the volcano by members of the 1917 Katmai expedition. Two small andesitic-dacitic stratovolcanoes, SW Snowy and NE Snowy, originated about 200,000 years ago. Only NE Snowy has been active during the Holocene. Late-Holocene collapse of this volcano produced a large debris avalanche that traveled to the north and left a large breached crater inside which a blocky lava dome was constructed. Peat beneath an ash layer thought to be associated with the the lava dome was radiocarbon dated at about 250 +/- 70 years ago. No historical eruptive activity has been documented, but fumarolic activity has been observed at NE Snowy. A zone of persistent diffuse shallow seismicity is located on and NW of the volcano.
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Smithsonian / GVP volcano information


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