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isola Saint Paul

St. Paul

Stratovulcano · 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
Tipo
Stratovulcano
Paese
France
Regione
Somalia e Antartide / Amsterdam-St. Paul Hotspot Volcano Group
Altitudine
268 m
Coordinate
-38.720, 77.530
Ultima eruzione
1793
Contesto tettonico
Rift zone / Oceanic crust (< 15 km)
Forma vulcanica
Composite
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

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.

Sintesi da Wikipedia

Riassunto in inglese

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.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1793~1793 · 1 eruzioni · VEI max. 217931793179417941794

Cronologia dettagliata

  1. 1793VEI 2Osservata
    1793 – In corso
    SW flank (near Cape West)

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.