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St. Michael volcanic field

St. Michael

화산대지 · United States · 715m

The St. Michael volcanic field consists of more than 55 cones and craters across Stuart Island (upper left) and the peninsula in the center of this 18 August 2020 Sentinel-2 satellite image (N is at the top; this image is approximately 40 km across). The field covers more than 3,000 km2. The Stuart Hill cone is visible in the eastern side of Stuart island, and St. Michael Mountain is in the center of the peninsula area.
The St. Michael volcanic field consists of more than 55 cones and craters across Stuart Island (upper left) and the peninsula in the center of this 18 August 2020 Sentinel-2 satellite image (N is at the top; this image is approximately 40 km across). The field covers more than 3,000 km2. The Stuart Hill cone is visible in the eastern side of Stuart island, and St. Michael Mountain is in the center of the peninsula area. · 사진: Satellite image courtesy of Copernicus Sentinel Data, 2019.
화산 유형
화산대지
국가
United States
지역
North America Volcanic Regions / Northern Alaska-Bering Sea Volcanic Province
해발
715m
좌표
63.450, -162.120
마지막 분화
미확인
판구조 환경
Intraplate / Continental crust (> 25 km)
화산 지형
Cluster
주요 암석
Basalt / Picro-Basalt
지질학적 요약

The St. Michael volcanic field, at the south end of Norton Sound, includes more than 55 cones and craters on St. Michael and Stuart islands. Broad low shield volcanoes underlie the younger cones, and maars are located at the SW part of the field, which covers over 3,000 km2 and extends inland along the Golsovia and Kogok rivers. The youngest activity is of Holocene age, and native tradition says that a village was submerged by lava three times (Dall, 1870).

Wikipedia 요약

영어 요약

The St. Michael volcanic field is a volcanic field located on St. Michael and Stuart Islands in western Alaska, United States. It contains 55 cones and craters, including low broad shield volcanoes and maars. It is considered part of the Bering Sea Volcanic Province.

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