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Atka volcano

Stratovolcanoes 1451 m / 4,760 ft
United States, Aleutian Islands, 52.33°N / -174.14°W
Current status: normal or dormant (1 out of 5) | Reports
Atka volcano books
Typical eruption style: unspecified
Atka volcano eruptions: 1987 
TimeMag. / DepthDistanceLocation
Sat, 17 Nov
Sat, 17 Nov 00:03 UTCM 1.1 / 3.2 km4 km- 17km NNE of Atka, Alaska
Thu, 18 Oct
Thu, 18 Oct 21:42 UTCM 1.1 / 2.9 km6 km- 12km N of Atka, Alaska
Thu, 18 Oct 21:12 UTCM 0.4 / 2.6 km7 km- 11km N of Atka, Alaska
Thu, 18 Oct 20:57 UTCM 1.1 / 2.8 km9 km- 12km NNW of Atka, Alaska
Thu, 4 Oct
Thu, 4 Oct 17:06 UTCM 0.3 / 5.4 km4 km- 12km N of Atka, Alaska
View all recent quakes

Background:

The largest volcanic center in the central Aleutians, Atka consists of a central shield and Pleistocene caldera with several post-caldera volcanoes. A major dacitic explosive eruption accompanied formation of the caldera about 500,000 to 300,000 years ago. The most prominent of the post-caldera stratovolcanoes are Kliuchef and Sarichef, both of which may have been active in historical time. Sarichef has a symmetrical profile, but the less eroded Kliuchef is the source of most if not all historical eruptions. Kliuchef may have been active on occasion simultaneously with Korovin volcano to the north. Hot springs and fumaroles are located on the flanks of Mount Kliuchef and in a glacial valley SW of Kliuchef.
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Smithsonian / GVP volcano information

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