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Yantarni volcano

Stratovolcano 1345 m / 4,413 ft
United States, Alaska Peninsula, 57.02°N / -157.19°W
Current status: normal or dormant (1 out of 5) | Reports
Yantarni volcano books
Typical eruption style: unspecified
Yantarni volcano eruptions: 800 BC ± 500 years
TimeMag. / DepthDistanceLocation
Fri, 19 Oct
Fri, 19 Oct 05:16 UTCM 1.0 / 9.5 km27 km- 100km NE of Chignik Lake, Alaska
Fri, 19 Oct 01:43 UTCM 3.0 / 78 km15 km ALASKA PENINSULA
Wed, 17 Oct
Wed, 17 Oct 04:36 UTCM 2.4 / 0.2 km18 km- 111km NE of Chignik Lake, Alaska
Mon, 1 Oct
Mon, 1 Oct 08:35 UTCM 2.5 / 81.4 km2 km- 156km NNW of Chirikof Island, Alaska
View all recent quakes

Background:

Yantarni is a small andesitic stratovolcano located between Aniakchak caldera and Chiginadak volcanoes that was not discovered until 1979. A large breached crater on the NE side, which was formed by collapse of the summit about 2000-3500 years ago, contains a lava dome that marks the volcano's 1345 m high point. This eruption, which resembled that of Mount St. Helens in 1980, began with a debris avalanche produced by the edifice collapse that was accompanied by a possible lateral blast and followed by the emplacement of 1 cu km of pyroclastic flows related to growth of the summit lava dome. No historical eruptions have been documented from Yantarni.
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Smithsonian / GVP volcano information


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