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Isla de San Pablo

St. Paul

Estratovolcán · 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
Estratovolcán
País
France
Región
Somalian-Antarctic Volcanic Regions / Amsterdam-St. Paul Hotspot Volcano Group
Altitud
268 m
Coordenadas
-38.720, 77.530
Última erupción
1793
Contexto tectónico
Rift zone / Oceanic crust (< 15 km)
Forma volcánica
Composite
Roca principal
Basalt / Picro-Basalt
Resumen geológico

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.

Resumen de Wikipedia

La isla de San Pablo es una isla muy pequeña de origen volcánico que forma parte de los Territorios Australes Franceses en el océano Índico. Está a 85 km al sur de la isla Ámsterdam, situado en 38°43′19″S 77°31′44″E. Es una isla rocosa y deshabitada de 8 km², está totalmente desprovista de árboles, básicamente representada por una antigua caldera de un volcán. Una estación científica de investigación en la isla se utiliza para las campañas cortas científicas o ecológicas, pero no hay población permanente.

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1793~1793 · 1 erupciones · VEI máx. 217931793179417941794

Línea de tiempo detallada

  1. 1793VEI 2Observado
    1793 – En curso
    SW flank (near Cape West)

Enlaces externos

⚠ Solo como referencia. No apto para respuesta ante emergencias.