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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Snowy Mountain
Snowy Mountain volcano lies 15 km NE of Mount Katmai. An ice-topped Holocene lava dome on the central skyline partly fills an ice-mantled scar that formed as a result of edifice collapse of the NE flank. The summit (Peak 7090) lies just behind the dome to its right. The Serpent Tongue glacier flows from the amphitheater. Photo courtesy of U.S. Geological Survey, 1999 (published in Hildreth et al., 2001).
Volcano Number:
312200
Volcano Name:
Snowy Mountain
Country:
United States
Volcano Type:
Stratovolcano(es)
Last Eruption:
1710 CE
Elevation:
2162m
Tectonic Setting:
Subduction zone / Continental crust (> 25 km)
Pop. within 100km:
248
Latitude:
58.336
Longitude:
-154.682
Details
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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 volcano is covered 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. Collapse of NE Snowy during the Holocene 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 eruptive activity has been observed and documented. Wood and Kienle (1990) noted that an active fumarole field at the summit had melted holes through the ice, and there was a zone of shallow seismicity beneath that mountain that is probably due to the hydrothermal system.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
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Data from the Earthchem Library
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Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
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Data from UNAVCO
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Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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