본문으로 건너뛰기
← 지도로 돌아가기
⇄ 비교

Hudson Mountains

성층화산 · Antarctica · 749m

Hudson Mountains volcanic field comprises about 20 volcanic nunataks. These are peaks protruding from ice, and here represent the surface expression of multiple volcanic vents. At least four nunataks can be seen faintly in this image, looking across the southern Hudson Mountains from the west. The exposed ridge in the left foreground is Webber Nunatak. The uppermost, largely ice-covered nunatak seen here is Mount Manthe, one of the largest peaks in this volcanic field and dated to about 5 million years ago. A tephra layer from this field was erupted about 2,000 years ago.
Hudson Mountains volcanic field comprises about 20 volcanic nunataks. These are peaks protruding from ice, and here represent the surface expression of multiple volcanic vents. At least four nunataks can be seen faintly in this image, looking across the southern Hudson Mountains from the west. The exposed ridge in the left foreground is Webber Nunatak. The uppermost, largely ice-covered nunatak seen here is Mount Manthe, one of the largest peaks in this volcanic field and dated to about 5 million years ago. A tephra layer from this field was erupted about 2,000 years ago. · 사진: U. S. Navy photo TMA 2035 F31 203. · Wikimedia Commons
화산 유형
성층화산
국가
Antarctica
지역
Antarctic-Scotia Volcanic Regions / Western Antarctica Volcanic Province
해발
749m
좌표
-74.330, -99.420
마지막 분화
-207년
판구조 환경
Intraplate / Continental crust (> 25 km)
화산 지형
Composite
주요 암석
Basalt / Picro-Basalt
지질학적 요약

The Hudson Mountains, located along the Walgreen Coast in Antarctica's western Ellsworth Land, contain many only slightly eroded cones forming nunataks protruding above the Antarctic icecap. The cinder cones apparently rest on three extensively eroded Miocene stratovolcanoes, Teeters Nunatak, Mount Moses, and Mount Manthe. Subaerial basaltic lava flows dominate, but subglacial or subaqueous tuffs and lava flows are also present. A tephra layer from an eruption of a subglacial volcano in the Hudson Mountains was dated from ice thickness at about 200 BCE. The possible presence of steam was reported at one of the Hudson volcanoes during 1974. Satellite data suggested that an eruption of Webber Nunatak took place during 1985, although this has not been confirmed (LeMasurier and Thomson, 1990).

Wikipedia 요약

영어 요약

The Hudson Mountains are a mountain range in western Ellsworth Land just east of Pine Island Bay at the Walgreen Coast of the Amundsen Sea. They are of volcanic origin, consisting of low scattered mountains and nunataks that protrude through the West Antarctic Ice Sheet. The Hudson Mountains are bounded on the north by Cosgrove Ice Shelf and on the south by Pine Island Glacier. The mountains were volcanically active during the Miocene and Pliocene, but there is evidence for an eruption about two millennia ago and uncertain indications of activity in the 20th century.

Wikipedia · CC BY-SA · 전체 기사 보기 →

분화 이력

요약 (VEI 시계열)
막대를 클릭하면 개별 분화가 표시됩니다
207 BCE~8 BCE · 1건 · 최고 VEI 41786~1985 · 1건 · 최고 VEI ?207 BCE39178913871786

상세 타임라인

  1. 1985년VEI ?지질학적 추정
    1985-07-02 ~ 진행 중
    Webber Nunatak
  2. 기원전 207년 (±240년)VEI 4지질학적 추정
    BCE 207 ~ 진행 중
    Hudson Mountains Subglacial Volcano

외부 링크

⚠ 참고용 정보입니다. 재난 대응에 사용하지 마세요.