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Shishaldin Volcano description and information




Official Name: Shishaldin Volcano
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
From Miller and others (1998): "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 (Fournelle, 1988). The Shishaldin cone is less than 10,000 year old and is constructed on a glacially eroded remnant of an ancestral soma and shield (Fournelle, 1988), which in turn are underlain by volcaniclastic rocks of probable late Tertiary age (McLean and others, 1978). Fournelle (1988) suggests that the basement may consist, at least in part, of plutonic rocks."
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Page modified: June 12, 2014 07:20
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