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Papúa Nueva Guinea · Volcán complejo

St. Andrew Strait

Tipo
Volcán complejo
Altitud
270 m
Última erupción
1957
The St. Andrew Strait volcano is located in the Admiralty Islands north of Papua New Guinea. The volcanic complex consists of a series of overlapping Quaternary cones formed by rhyolitic lava flows and pyroclastic deposits on Lou and Tuluman Islands. Volcanism is aligned along a curved arc, extending through the 12-km-long Lou Island. Tuluman Island, seen here from the SW with Lou Island 1.5 km away at the upper left, was formed during a 1953-57 eruption.
The St. Andrew Strait volcano is located in the Admiralty Islands north of Papua New Guinea. The volcanic complex consists of a series of overlapping Quaternary cones formed by rhyolitic lava flows and pyroclastic deposits on Lou and Tuluman Islands. Volcanism is aligned along a curved arc, extending through the 12-km-long Lou Island. Tuluman Island, seen here from the SW with Lou Island 1.5 km away at the upper left, was formed during a 1953-57 eruption. · Foto: Photo by Wally Johnson, 1964 (Australia Bureau of Mineral Resources).
Tipo
Volcán complejo
País
Papúa Nueva Guinea
Región
Pacífico Suroccidental / Bismarck Sea Volcanic Province
Altitud
270 m
Coordenadas
-2.380, 147.350
Última erupción
1957
Contexto tectónico
Zona de subducción / Corteza oceánica (< 15 km)
Forma volcánica
Compuesto
Roca principal
Riolita
Resumen geológico

The St. Andrew Strait volcano, located in the Admiralty Islands north of Papua New Guinea, consists of a series of overlapping Quaternary cones formed by rhyolitic lava flows and pyroclastic materials on Lou and Tuluman Islands. Volcanism is aligned on a curved arc extending through the 12-km-long Lou Island. The Tuluman Islands, 1.5 km S of Lou Island, were formed during a 1953-1957 eruption. Pam Lin and Pam Mandian Islands farther to the SE along the same arc contain fresh rhyolitic obsidian similar to that found on Tuluman.

Historial de erupciones

5 registradasGlosario
Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales · Usa las flechas para moverte entre barras y Enter para abrir
240 a. C.~41 a. C. · 1 erupciones · VEI máx. ?159~358 · 1 erupciones · VEI máx. ?1754~1953 · 3 erupciones · VEI máx. 2240 a. C.35875713551754

Línea de tiempo detallada

  1. 1953VEI 2Observado
    1953-06-27 – 1957-01-28
    Tuluman
  2. 1931VEI 0Método no indicado
    1931-07-02 – fin desconocido
    Tuluman (?)
  3. 1883VEI 2Observado
    1883-03-28 – fin desconocido
    Tuluman
  4. 350VEI ?Estimación geológica
    350 – fin desconocido
    Lou Island (Bedal volcano)
  5. 240 a. C. (±100 años)VEI ?Estimación geológica
    240 a. C. – fin desconocido
    Lou Island (Bedal volcano)

Volcanes cercanos

Enlaces externos

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