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Papua Nuova Guinea · Vulcano complesso

St. Andrew Strait

Tipo
Vulcano complesso
Altitudine
270 m
Ultima eruzione
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
Vulcano complesso
Paese
Papua Nuova Guinea
Regione
Pacifico sud-occidentale / Bismarck Sea Volcanic Province
Altitudine
270 m
Coordinate
-2.380, 147.350
Ultima eruzione
1957
Contesto tettonico
Zona di subduzione / Crosta oceanica (< 15 km)
Forma vulcanica
Composito
Roccia principale
Riolite
Sintesi geologica

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.

Storia delle eruzioni

5 registrateGlossario
Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni · Usa le frecce per spostarti tra le barre, Invio per aprire
240 a.C.~41 a.C. · 1 eruzioni · VEI max. ?159~358 · 1 eruzioni · VEI max. ?1754~1953 · 3 eruzioni · VEI max. 2240 a.C.35875713551754

Cronologia dettagliata

  1. 1953VEI 2Osservata
    1953-06-27 – 1957-01-28
    Tuluman
  2. 1931VEI 0Metodo non indicato
    1931-07-02 – fine sconosciuta
    Tuluman (?)
  3. 1883VEI 2Osservata
    1883-03-28 – fine sconosciuta
    Tuluman
  4. 350VEI ?Stima geologica
    350 – fine sconosciuta
    Lou Island (Bedal volcano)
  5. 240 a.C. (±100 anni)VEI ?Stima geologica
    240 a.C. – fine sconosciuta
    Lou Island (Bedal volcano)

Vulcani nelle vicinanze

Link esterni

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