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Île Saint-Paul

St. Paul

Stratovolkan · France · 268 m

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. · Foto: Plate from the SMS Gazelle expedition (courtesy of NOAA Photo Library). · Wikimedia Commons
Tipe
Stratovolkan
Negara
France
Wilayah
Somalian-Antarctic Volcanic Regions / Amsterdam-St. Paul Hotspot Volcano Group
Ketinggian
268 m
Koordinat
-38.720, 77.530
Letusan terakhir
1793
Kondisi tektonik
Rift zone / Oceanic crust (< 15 km)
Bentuk lahan
Composite
Batuan utama
Basalt / Picro-Basalt
Ringkasan geologi

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.

Ringkasan Wikipedia

Île Saint-Paul adalah sebuah pulau yang meliputi bagian dari Daratan Antarktika dan Selatan Prancis di Samudra Hindia, dengan luas 6 km2 (2,3 sq mi). Pulau tersebut berjarak sekitar 85 km (53 mi) dari barat daya Île Amsterdam, dan 3.000 km (1.900 mi) dari tenggara Réunion.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1793~1793 · 1 letusan · VEI maks. 217931793179417941794

Garis waktu rinci

  1. 1793VEI 2Teramati
    1793 – Berlangsung
    SW flank (near Cape West)

Tautan eksternal

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