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해저 지형 · 열극 분화구

Southern EPR-Segment I

Southern EPR at 18.5°S (Segment I)

화산 유형
열극 분화구
해발
2600m (해저)
마지막 분화
1915년
Black smoker vents emitting low-chlorinity fluids at 374°C were photographed at the "RM28" site at 18°26’S on Segment I of the Southern East Pacific Rise in November 1994 from the Japanese submersible Shinkai 6500. The narrow axial crest of Segment I of the Southern East Pacific Rise in some places is less than 50 m wide. The largest lava flow field in this area is the Animal Farm flow, named after a thriving low-temperature hydrothermal site discovered during a 1993 submersible expedition.
Black smoker vents emitting low-chlorinity fluids at 374°C were photographed at the "RM28" site at 18°26’S on Segment I of the Southern East Pacific Rise in November 1994 from the Japanese submersible Shinkai 6500. The narrow axial crest of Segment I of the Southern East Pacific Rise in some places is less than 50 m wide. The largest lava flow field in this area is the Animal Farm flow, named after a thriving low-temperature hydrothermal site discovered during a 1993 submersible expedition. · 사진: Image courtesy of NOAA Vents Program, 1994 (www.pmel.noaa.gov/vents/chemistry/images/).
화산 유형
열극 분화구
국가
해저 지형
지역
남태평양 / Southern East Pacific Rise Volcanic Province
해발
2600m (해저)
좌표
-18.530, -113.420
마지막 분화
1915년
판구조 환경
열곡대 / 해양 지각 (< 15 km)
화산 지형
화산군
주요 암석
현무암 / 피크로현무암
지질학적 요약

The narrow axial crest of Segment I of the Southern East Pacific Rise in some places is less than 50 m wide. An axial dome is located along the southern part of the segment. The largest lava flow field in this segment is the Animal Farm flow, named after a thriving low-temperature hydrothermal site discovered during a submersible expedition in 1993. The Animal Farm lava flow was dated by magnetic paleointensity measurements at about 1880-1950 CE, and older flows were dated by similar techniques to the 17th and 19th centuries.

분화 이력

3건 기록용어집
요약 (VEI 시계열)
막대를 클릭하면 개별 분화가 표시됩니다 · 화살표 키로 막대 이동, Enter로 열기
1620~1650 · 1건 · 최고 VEI 01856~1886 · 1건 · 최고 VEI 01886~1915 · 1건 · 최고 VEI 016201679176818271886

상세 타임라인

  1. 1915년 (±40년)VEI 0지질학적 추정
    1915-07-02 ~ 종료일 미상
  2. 1860년VEI 0지질학적 추정
    1860-07-02 ~ 종료일 미상
  3. 1620년VEI 0지질학적 추정
    1620 ~ 종료일 미상

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