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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
Wed, 14 Feb
Wed, 14 Feb 15:16 UTCM 2.1 / 70.3 km31 km- 90km N of Larsen Bay, Alaska
Tue, 6 Feb
Tue, 6 Feb 19:40 UTCM 2.6 / 63.5 km14 km- 123km SE of Old Iliamna, Alaska
Tue, 30 Jan
Tue, 30 Jan 03:01 UTCM 2.4 / 124.1 km44 km- 99km S of Old Iliamna, Alaska
Sun, 28 Jan
Sun, 28 Jan 18:32 UTCM 2.0 / 82.2 km8 km- 125km N of Larsen Bay, Alaska
Sat, 27 Jan
Sat, 27 Jan 01:40 UTCM 2.3 / 1.6 km3 km- 103km 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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