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Mageik volcano

Stratovolcano 2165? m / 7,103 ft
United States, Alaska Peninsula, 58.2°N / -155.25°W
Current status: dormant (1 out of 5)
Mageik volcano books
Typical eruption style: unspecified
Mageik volcano eruptions: 500 BC ± 50 years
TimeMag. / DepthDistanceLocation
Mon, 18 Sep
Mon, 18 Sep 17:29 UTCM 1.3 / 0.3 km137 km- 94km NNW of Larsen Bay, Alaska
Mon, 18 Sep 03:13 UTCM 0.6 / 8.8 km3 km- 97km SE of King Salmon, Alaska
Sun, 17 Sep
Sun, 17 Sep 13:00 UTCM 0.8 / 2 km8 km- 97km NNW of Larsen Bay, Alaska
Fri, 15 Sep
Fri, 15 Sep 22:05 UTCM 1.2 / 3.9 km3 km- 99km NW of Larsen Bay, Alaska
Mon, 11 Sep
Mon, 11 Sep 00:10 UTCM 0.3 / 2.1 km5 km- 101km ESE of King Salmon, Alaska
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Background:

Mount Mageik is a broad ice-capped stratovolcano at the head of the Valley of Ten Thousand Smokes across Katmai Pass from Trident volcano. Four small overlapping peaks form the broad summit, three of which lie along a NE-SW trend south of the northern peak. The central summit consists of a lava dome, while the east, SW, and north volcanoes are capped by fragmental cones with ice-filled craters. The three westernmost summits are glaciated and of primarily Pleistocene age, but the East Mageik summit cone was the source of at least six Holocene eruptive episodes and fed Holocene lava flows that descended toward Katmai Pass and blanket the NE-to-SE flanks of the volcano. A young, 300-m-wide explosion crater between the east and central summits that formed about 2400-2500 years ago contains a shallow, acidic lake and many superheated fumarole jets. Three Holocene debris avalanches from south-flank failures descended into the Martin Creek drainages, one perhaps reaching the coast. Reports of historical eruptions from Mageik were questioned by Miller et al. (1998) and Hildreth and Fierstein (2000).
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Smithsonian / GVP volcano information


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