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Kaguyak volcano

Lava domes 901 m / 2,956 ft
United States, Alaska Peninsula, 58.61°N / -154.03°W
Current status: dormant (1 out of 5) | Reports
Kaguyak volcano books
Typical eruption style: unspecified
Kaguyak volcano eruptions: 3850 BC (?) 
TimeMag. / DepthDistanceLocation
Sun, 23 Sep
Sun, 23 Sep 19:05 UTCM 1.7 / 87.3 km19 km- 97km N of Larsen Bay, Alaska
Thu, 20 Sep
Thu, 20 Sep 12:28 UTCM 1.7 / 86.5 km6 km- 113km N of Larsen Bay, Alaska
Thu, 20 Sep 11:56 UTCM 2.5 / 73.6 km24 km- 97km N of Larsen Bay, Alaska
Thu, 20 Sep 06:27 UTCM 0.8 / 5.4 km10 km- 105km NNW of Larsen Bay, Alaska
Tue, 18 Sep
Tue, 18 Sep 09:29 UTCM 0.7 / 4.1 km10 km- 106km NNW of Larsen Bay, Alaska
View all recent quakes

Background:

The small, but spectacular 2.5-km-wide Kaguyak caldera in the NE part of Katmai National Park is filled by a >180-m-deep lake whose surface lies more than 550 m below the caldera rim. Kaguyak volcano is only 901 m high, but rises directly from lowland areas near sea level south of the Big River. Initially considered to be a typical stratovolcano truncated by a caldera, the pre-caldera edifice has been shown to consist of nine continuguous late-Pleistocene lava dome clusters, most of which lie east of the present caldera. A large post-caldera lava dome extends into the lake on the SW side and another dome forms a small island in the center of the lake. The youthful caldera is unglaciated, and distal tephras from the caldera-forming eruption have been radiocarbon dated at about 5800 years before present. Voluminous dacitic pyroclastic-flow deposits surround the caldera and reached Shelikof Strait to the SE.
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Smithsonian / GVP volcano information


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