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News
Saturday, Mar 12, 2016
The alert level was lowered back to normal status. Detectable activity (visible observations and satellite-based data) has been decreasing steadily of the past several months, the Alaska Volcano Observatory reported: ... [more]
Saturday, Nov 21, 2015
No anomalous activity at Shishaldin has been observed in satellite data since weakly elevated surface temperatures were detected on October 16. Low-amplitude seismic tremor continues but is not considered to be indicative of an active eruption. ... [more]
 

Shishaldin volcano

Stratovolcano 2857 m / 9,373 ft
Aleutian Islands, Alaska, 54.76°N / -163.97°W
Current status: dormant (1 out of 5)
Shishaldin webcams / live data
Shishaldin volcano books
Last update: 12 Mar 2016 (currently calm)
Typical eruption style: explosive
Shishaldin volcano eruptions: 2014-15, 2008 (?), 2004, 2002, 2000, 1999, 1997, 1995, 1993, 1986-87, 1981 (?), 1979, 1978, 1976, 1975, 1967, 1963, 1955, 1953, 1951, 1948, 1946-47, 1932, 1929, 1928, 1927, 1925, 1922, 1912 (?), 1901, 1899 (?), 1898, 1897 (?), 1883, 1880-81, 1865 (?), 1842, 1838, 1830, 1927-29, 1826, 1825, 1824, 1790 (?), 1775-78
TimeMag. / DepthDistanceLocation
Fri, 30 Jun
Fri, 30 Jun 12:08 UTCM 4.7 / 106 km10 kmUnimak Island Region, Alaska

Background:

The beautifully symmetrical volcano of Shishaldin is the highest and one of the most active volcanoes of the Aleutian Islands. The 2857-m-high, glacier-covered volcano is the westernmost of three large stratovolcanoes along an E-W line in the eastern half of Unimak Island. The Aleuts named the volcano Sisquk, meaning "mountain which points the way when I am lost." A steady steam plume rises from its small summit crater. Constructed atop an older glacially dissected volcano, Shishaldin is Holocene in age and largely basaltic in composition. Remnants of an older ancestral volcano are exposed on the west and NE sides at 1500-1800 m elevation. Shishaldin contains over two dozen pyroclastic cones on its NW flank, which is blanketed by massive aa lava flows. Frequent explosive activity, primarily consisting of strombolian ash eruptions from the small summit crater, but sometimes producing lava flows, has been recorded since the 18th century.
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Smithsonian / GVP volcano information

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