본문으로 건너뛰기

Mount Dana

Dana

성층화산 · United States · 1354m

Snow-covered Knutson Lake (lower left) lies within a 1.5 x 2 km wide crater of Mount Dana. Dana is a small volcano consisting of a central dome complex surrounded by a fan of volcaniclastic debris. Lava domes are along the western crater rim and inside the crater east of Knutson Lake. A major eruption about 3,840 radiocarbon years ago produced a block-and-ash flow that filled valleys south and west of the crater.
Snow-covered Knutson Lake (lower left) lies within a 1.5 x 2 km wide crater of Mount Dana. Dana is a small volcano consisting of a central dome complex surrounded by a fan of volcaniclastic debris. Lava domes are along the western crater rim and inside the crater east of Knutson Lake. A major eruption about 3,840 radiocarbon years ago produced a block-and-ash flow that filled valleys south and west of the crater. · 사진: Photo courtesy of Alaska Volcano Observatory, U.S. Geological Survey, 1973. · Wikimedia Commons
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 요약

Mount 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.

Wikipedia · CC BY-SA · 전체 기사 보기

분화 이력

요약 (VEI 시계열)
막대를 클릭하면 개별 분화가 표시됩니다
1890 BCE~1890 BCE · 1건 · 최고 VEI 51890 BCE1890 BCE1889 BCE1889 BCE1889 BCE

상세 타임라인

  1. 기원전 1890년VEI 5지질학적 추정
    BCE 1890 ~ 진행 중

외부 링크

⚠ 참고용 정보입니다. 재난 대응에 사용하지 마세요.