Rocard
원추화산 · France · 2515m (해저)
- 화산 유형
- 원추화산
- 국가
- France
- 지역
- Southern Pacific Volcanic Regions / Society Islands Hotspot Volcano Group
- 해발
- 2515m (해저)
- 좌표
- -17.662, -148.586
- 마지막 분화
- 1972년
- 판구조 환경
- Intraplate / Oceanic crust (< 15 km)
- 화산 지형
- Composite
- 주요 암석
- Trachyte / Trachydacite
지질학적 요약
Rocard is a small volcanic seamount about 60 km WNW of Mehetia and 28 km ESE of Teahitia seamount. The summit lies 2,500 m below sea level on a submarine edifice about 8 km in diameter. Seismicity in 1966, 1971, and 1972 may have been caused by submarine eruptions (Talandier and Custer, 1976). Rocks dredged in 1986 "exploded" when they reached the surface, suggesting recent lava extrusion that had not yet had time to equilibrate with pressure and temperature conditions on the submerged flanks of the edifice.
Wikipedia 요약
영어 요약Rocard is a submarine volcano in French Polynesia, located between the island of Mehetia and the Teahitia seamount. The volcano's summit is 2515m below sealevel. It has erupted in March 1966, September 1971, and July 1972.
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분화 이력
상세 타임라인
- 1972년VEI 0관측 기록1972-07-04 ~ 1972-07-19
- 1971년VEI 0관측 기록1971-09-06 ~ 진행 중
- 1966년VEI 0관측 기록1966-03-09 ~ 1966-03-20
외부 링크
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