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Shishaldin Volcano description and information

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Official Name: Shishaldin Volcano
Type:Stratovolcano
Most Recent Activity:January 28, 2014
Seismically Monitored: Yes
Color Code:GREEN
Alert Level:NORMAL
Elevation: 9373 ft (2857 m)
Latitude: 54.7554° N
Longitude:163.9711° W
Quadrangle:False Pass Unimak
CAVW Number:311360
Pronunciation: Sound file
Nearby towns:False Pass 24 mi (38 km) NE
Pauloff Harbor 55 mi (88 km) SE
Cold Bay 58 mi (93 km) NE
King Cove 69 mi (111 km) NE
Anchorage 679 mi (1093 km) NE
DESCRIPTION
From Miller and others (1998) [1]: "Shishaldin Volcano, located near the center of Unimak Island, is a spectacular symmetrical cone about 16 km in diameter at the base. The mountain, which rises to a summit 2857 m above sea level, is the highest peak in the Aleutian Islands and has a small summit crater from which a steady cloud of steam is emitted. The upper 2000 m is almost entirely covered by perennial snow and ice. It is flanked to the northwest by 24 monogenetic parasitic cones [2]. The Shishaldin cone is less than 10,000 year old and is constructed on a glacially eroded remnant of an ancestral soma and shield [2], which in turn are underlain by volcaniclastic rocks of probable late Tertiary age [3]. Fournelle (1988) [2] suggests that the basement may consist, at least in part, of plutonic rocks."
REFERENCES CITED
[1]
Catalog of the historically active volcanoes of Alaska, 1998
citation imageMiller, T. P., McGimsey, R. G., Richter, D. H., Riehle, J. R., Nye, C. J., Yount, M. E., and Dumoulin, J. A., 1998, Catalog of the historically active volcanoes of Alaska: U.S. Geological Survey Open-File Report OF 98-0582, 104 p.
Download PDF title page PDF : 52
Download PDF intro and TOC PDF : 268 KB
Download PDF eastern part - Wrangell to Ukinrek Maars PDF : 972 KB
Download PDF central part - Chiginagak to Cleveland PDF : 2,463 KB
Download PDF western part - Carlisle to Kiska PDF : 956 KB
Download PDF references PDF : 43 KB

[2]
Geology and petrology of Shishaldin volcano, Unimak Island, Aleutian Arc, Alaska, 1988
Fournelle, J. H., 1988, Geology and petrology of Shishaldin volcano, Unimak Island, Aleutian Arc, Alaska: The Johns Hopkins University Ph.D. dissertation, 507 p., 2 plates, scale unknown.

[3]
Reconnaissance geologic map of the Cold Bay and False Pass quadrangles, Alaska, 1978
McLean, H., Engelhardt, C. L., and Howell, D. G., 1978, Reconnaissance geologic map of the Cold Bay and False Pass quadrangles, Alaska: U.S. Geological Survey Open-File report OF 78-0323, unpaged, 1 plate.
Download ADGGS website with links to map PDF

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Page modified: June 12, 2014 07:20
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