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Stratovolcanoes 1451 m / 4,760 ft
United States, Aleutian Islands, 52.33°N / -174.14°WCurrent status
(1 out of 5)Atka volcano books
Typical eruption style
Atka volcano eruptions
|Time||Mag. / Depth||Distance||Location|
|Thu, 23 Feb|
|Thu, 23 Feb 21:49 UTC||M 3.0 / 59.4 km||40 km||- 27km SE of Atka, Alaska|
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.
Smithsonian / GVP volcano information
Erupting Klyuchevskoy volcano, Kamchatka, with the new lava flow and Kamen volcano (Sep 2013) (Photo: Sergey Krasnoshchokov)
KLYOUCHEVSKOY, KAMCHATKA July 2011 (Photo: kayapo)
The crater lake of Maly Semyachik, Kamchatka (Photo: kaylash)
Koryaksky Volcano rising above city of Petropavlovsk, Kamchatka (Photo: Richard Roscoe)
Rugged volcanic peaks in Kamchatka, Russia (Photo: Alexander Lobashevsky)
South side of Vilyuchinsky volcano(2173 m), Kamchatka, on the right. The volcanoes Aag (2310 m, left), Koryaksky (3456 m, center) and Avachinsky (2741 m, right) rise abov...
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