Mount Taishaku

Omanago Group

용암돔 · Japan · 2341m

The Omanago volcano group (upper left) consists of a series of five lava domes in Nikko National Park. The highest dome is Omanago, located at the SE end of the complex. Mitsudake is the NW-most dome. The higher northern peak of the Mitsudake complex is out of view to the left, and the lower southern dome forms the low ridge behind the hot spring resort of Yunoko lake in the center of the photo. The peak on the right horizon is Nantaisan. · 사진: Photo by Lee Siebert, 1964 (Smithsonian Institution). · Wikimedia Commons

화산 유형: 용암돔
국가: Japan
지역: Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
해발: 2341m
좌표: 36.807, 139.476
마지막 분화: -3050년
판구조 환경: Subduction zone / Continental crust (> 25 km)
화산 지형: Cluster
주요 암석: Dacite

지질학적 요약

The Omanago volcano group consists of a series of five closely spaced lava domes that were constructed north and NW of Nantai volcano in Nikko National Park. The highest of the dacitic domes is Omanago, which later erupted andesitic lavas. The Mitsudake dome, which overlooks the hot spring resort of Lake Yunoko, was radiocarbon dated at about 5,000 years ago. Mitsudake was constructed on a southerly dipping slope, so that the southern of its two flat-topped domes is lower, and is overlapped by sediments of the Senjogahara plain.

분화 이력

요약 (VEI 시계열)

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상세 타임라인

기원전 3050년VEI ?지질학적 추정
BCE 3050 ~ 진행 중
Mitsu-dake

외부 링크

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