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Atka volcano

Stratovolcanoes 1451 m / 4,760 ft
United States, Aleutian Islands, 52.33°N / -174.14°W
Current status: dormant (1 out of 5) | Reports
Atka volcano books
Typical eruption style: unspecified
Atka volcano eruptions: 1987 
TimeMag. / DepthDistanceLocation
Tue, 18 Sep
Tue, 18 Sep 08:18 UTCM 1.7 / 61.9 km30 km- 28km SW of Atka, Alaska
Sun, 16 Sep
Sun, 16 Sep 13:11 UTCM 2.8 / 55.9 km37 km- 21km S of Atka, Alaska
Fri, 17 Aug
Fri, 17 Aug 06:58 UTCM 3.0 / 116.3 km6 km- 19km N of Atka, Alaska
Tue, 14 Aug
Tue, 14 Aug 21:19 UTCM 3.3 / 9.5 km10 km- 5km N of Atka, Alaska
Tue, 14 Aug 21:00 UTCM 4.1 / 44 km27 km ANDREANOF ISLANDS, ALEUTIAN IS.
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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