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생폴섬

St. Paul

성층화산 · France · 268m

A small 1.8-km-wide caldera cuts the E side of uninhabited St. Paul Island, as depicted in this plate from the SMS Gazelle expedition. The flooded caldera has 300-m-high walls on the SW side and is narrowly constrained by low spits on the NE. Geothermal areas are located along the caldera rim and along the margins of the caldera bay. The entire NE half of the volcano forming much of the island now lies beneath the sea.
A small 1.8-km-wide caldera cuts the E side of uninhabited St. Paul Island, as depicted in this plate from the SMS Gazelle expedition. The flooded caldera has 300-m-high walls on the SW side and is narrowly constrained by low spits on the NE. Geothermal areas are located along the caldera rim and along the margins of the caldera bay. The entire NE half of the volcano forming much of the island now lies beneath the sea. · 사진: Plate from the SMS Gazelle expedition (courtesy of NOAA Photo Library). · Wikimedia Commons
화산 유형
성층화산
국가
France
지역
Somalian-Antarctic Volcanic Regions / Amsterdam-St. Paul Hotspot Volcano Group
해발
268m
좌표
-38.720, 77.530
마지막 분화
1793년
판구조 환경
Rift zone / Oceanic crust (< 15 km)
화산 지형
Composite
주요 암석
Basalt / Picro-Basalt
지질학적 요약

The uninhabited triangular island of St. Paul is located near the axis of the East Indian Ocean Ridge, 80 km S of Amsterdam Island. It is composed of an older tuff cone surmounted by a basaltic stratovolcano with a 1.8-km-wide caldera. The entire NE half of the volcano was submerged following collapse along a NW-trending fault. This breached the central caldera, leaving an 80-m-deep bay connected to the ocean by a narrow channel. Geothermal areas are located near the caldera rim and along the margins of the caldera bay. The only recorded eruption took place in 1793 from a vent on the lower SW flank.

Wikipedia 요약

영어 요약

Île Saint-Paul is an island forming part of the French Southern and Antarctic Lands in the Indian Ocean, with an area of 6 km2. The island is located about 90 km (56 mi) south of the larger Île Amsterdam 55 km2 (21 sq mi), 1,300 kilometres (810 mi) northeast of the Kerguelen Islands, and 3,000 km (1,900 mi) southeast of Réunion.

Wikipedia · CC BY-SA · 전체 기사 보기 →

분화 이력

요약 (VEI 시계열)
막대를 클릭하면 개별 분화가 표시됩니다
1793~1793 · 1건 · 최고 VEI 217931793179417941794

상세 타임라인

  1. 1793년VEI 2관측 기록
    1793 ~ 진행 중
    SW flank (near Cape West)

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