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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Shishaldin
Shishaldin, located on central Unimak Island in the Aleutians, has a summit crater that emits a nearly continuous plume. It is the highest and one of the most active volcanoes of the Aleutian Islands. There have been frequent Strombolian eruptions, sometimes with lava flows, since the 18th century. Photo by Chris Nye (Alaska Division of Geological & Geophysical Surveys, Alaska Volcano Observatory).
Volcano Number:
311360
Volcano Name:
Shishaldin
Country:
United States
Volcano Type:
Stratovolcano
Last Eruption:
2023 CE
Elevation:
2857m
Tectonic Setting:
Subduction zone / Continental crust (> 25 km)
Pop. within 30km:
10
Pop. within 100km:
197
Latitude:
54.756
Longitude:
-163.97
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The symmetrical glacier-covered Shishaldin in the Aleutian Islands is the westernmost of three large stratovolcanoes in the eastern half of Unimak Island. The Aleuts named the volcano Sisquk, meaning "mountain which points the way when I am lost." Constructed atop an older glacially dissected edifice, it is largely basaltic in composition. Remnants of an older edifice are exposed on the W and NE sides at 1,500-1,800 m elevation. There are over two dozen pyroclastic cones on its NW flank, which is covered 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. A steam plume often rises from the summit crater.
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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
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Data from IRIS FDSNWS
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