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St. Andrew Strait

Gunung api kompleks · Papua New Guinea · 270 m

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).
Tipe
Gunung api kompleks
Negara
Papua New Guinea
Wilayah
Pasifik Barat Daya / Bismarck Sea Volcanic Province
Ketinggian
270 m
Koordinat
-2.380, 147.350
Letusan terakhir
1957
Kondisi tektonik
Subduction zone / Oceanic crust (< 15 km)
Bentuk lahan
Composite
Batuan utama
Rhyolite
Ringkasan geologi

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.

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
240 BCE~41 BCE · 1 letusan · VEI maks. ?159~358 · 1 letusan · VEI maks. ?1754~1953 · 3 letusan · VEI maks. 2240 BCE35875713551754

Garis waktu rinci

  1. 1953VEI 2Teramati
    1953-06-27 – 1957-01-28
    Tuluman
  2. 1931VEI 0Perkiraan geologi
    1931-07-02 – Berlangsung
    Tuluman (?)
  3. 1883VEI 2Teramati
    1883-03-28 – Berlangsung
    Tuluman
  4. 350VEI ?Perkiraan geologi
    350 – Berlangsung
    Lou Island (Bedal volcano)
  5. 240 SM (±100 tahun)VEI ?Perkiraan geologi
    BCE 240 – Berlangsung
    Lou Island (Bedal volcano)

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.