베이커산
Baker
성층화산 · United States · 3285m
- 화산 유형
- 성층화산
- 국가
- United States
- 지역
- 북아메리카 / Garibaldi Volcanic Arc
- 해발
- 3285m
- 좌표
- 48.777, -121.813
- 마지막 분화
- 1880년
- 판구조 환경
- Subduction zone / Continental crust (> 25 km)
- 화산 지형
- Composite
- 주요 암석
- Andesite / Basaltic Andesite
지질학적 요약
Mount Baker, the northernmost of Washington's volcanoes, is a glacier-clad andesitic stratovolcano constructed above the E flank of the eroded mid-Pleistocene Black Buttes volcano and SW of the early Pleistocene 4.5 x 8 km rhyodacitic Kulshan caldera. With the exception of the Schreibers Meadow cinder cone on the SE flank, which formed about 9,800 years ago, Holocene volcanism has been confined to the central conduit. A major eruption about 6,500 years ago, it's largest eruptive event during the Holocene, was accompanied by a collapse that sent lahars down the Nooksack drainage. Early settlers in the Puget Sound region as far away as Victoria, British Columbia, observed 19th-century activity, all of which consisted of relatively minor phreatic eruptions. Sherman Crater, the historically active crater immediately south of the summit, has been the site of increased steam emission since 1975. The Nooksack Indian Tribe referred to the volcano as Kweq Smaenit, the "White Mountain." The Lummi Nation knew Mount Baker as Koma Kulshan.
Wikipedia 요약
영어 요약Mount Baker, also known as Koma Kulshan or simply Kulshan, is a 10,781-foot (3,286 m) active glacier-covered andesitic stratovolcano in the Cascade Volcanic Arc and the North Cascades of Washington State in the United States. Mount Baker has the second-most thermally active crater in the Cascade Range after Mount St. Helens. About 30 miles (48 km) due east of the city of Bellingham, Whatcom County, Mount Baker is the youngest volcano in the Mount Baker volcanic field. While volcanism has persisted here for some 1.5 million years, the current volcanic cone is likely no more than 140,000 years old, and possibly no older than 80–90,000 years. Older volcanic edifices have mostly eroded away due to glaciation.
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분화 이력
상세 타임라인
- 1884년VEI ?지질학적 추정1884-07-02 ~ 진행 중Sherman Crater
- 1880년VEI 2관측 기록1880-09-07 ~ 1880-11-27Sherman Crater
- 1870년VEI 2관측 기록1870-07-02 ~ 진행 중Sherman Crater
- 1869년VEI ?지질학적 추정1869-06-16 ~ 진행 중Sherman Crater
- 1867년VEI ?지질학적 추정1867-03-16 ~ 진행 중Sherman Crater
- 1865년VEI ?지질학적 추정1865-07-02 ~ 진행 중Sherman Crater
- 1863년VEI 2관측 기록1863-07-16 ~ 진행 중Sherman Crater
- 1860년VEI ?지질학적 추정1860-12-16 ~ 진행 중Sherman Crater
- 1859년VEI 2관측 기록1859-11-16 ~ 1860-04-26Sherman Crater
- 1858년VEI 2관측 기록1858-07-02 ~ 진행 중Sherman Crater
- 1856년VEI ?지질학적 추정1856-07-02 ~ 진행 중Sherman Crater
- 1854년VEI 2관측 기록1854-07-02 ~ 진행 중Sherman Crater
- 1852년VEI 2관측 기록1852-12-01 ~ 1853-01-16Sherman Crater
- 1850년VEI ?지질학적 추정1850-03-16 ~ 진행 중Sherman Crater
- 1846년VEI ?지질학적 추정1846-07-02 ~ 진행 중
- 1843년VEI 3관측 기록1843-07-02 ~ 진행 중Sherman Crater
- 1820년VEI 2관측 기록1820-07-02 ~ 진행 중
- 1792년VEI ?지질학적 추정1792-06 ~ 진행 중
- 기원전 4550년VEI 3지질학적 추정BCE 4550 ~ 진행 중Sherman Crater?
- 기원전 7850년VEI ?지질학적 추정BCE 7850 ~ 진행 중South flank (Schreibers Meadow Cone)
외부 링크
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