Mount Dana
Dana
성층화산 · United States · 1354m

- 화산 유형
- 성층화산
- 국가
- United States
- 지역
- North America Volcanic Regions / Aleutian Ridge Volcanic Arc
- 해발
- 1354m
- 좌표
- 55.641, -161.214
- 마지막 분화
- -1890년
- 판구조 환경
- Subduction zone / Continental crust (> 25 km)
- 화산 지형
- Composite
- 주요 암석
- Andesite / Basaltic Andesite
지질학적 요약
Mount Dana is a small calc-alkaline volcano NE of Canoe Bay inlet at the head of Pavlof Bay consisting of an apron of volcaniclastic debris surrounding a central dome complex. The high point is located at the north rim of a 1.5 x 2 km crater, whose SW rim exposes Mesozoic sedimentary rocks. Andesitic lava domes occur on the west crater rim and as a small mound east of Knutson Lake inside the crater. Dana is the source of a mid-Holocene block-and-ash flow that reached the sea at Canoe Bay. No historical eruptions are known, but a 200-m-wide tufa mound and several cold springs are located on the SW flank.
Wikipedia 요약
영어 요약Mount Dana is a small stratovolcano of the Alaska Peninsula, United States, located northeast of Canoe Bay inlet at the head of Pavlof Bay. It was the source for a major eruption about 3840 years ago that produced a pyroclastic flow that filled valleys south and west of the volcano's crater and reached the sea at Canoe Bay.
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분화 이력
상세 타임라인
- 기원전 1890년VEI 5지질학적 추정BCE 1890 ~ 진행 중
외부 링크
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