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パプアニューギニア · 複成火山

St. Andrew Strait

タイプ
複成火山
標高
270m
最終噴火
1957年
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. · 写真: Photo by Wally Johnson, 1964 (Australia Bureau of Mineral Resources).
タイプ
複成火山
国
パプアニューギニア
地域
南西太平洋 / Bismarck Sea Volcanic Province
標高
270m
座標
-2.380, 147.350
最終噴火
1957年
テクトニクス環境
沈み込み帯 / 海洋地殻 (< 15 km)
火山地形
複成火山
主要岩石
流紋岩
地質学的概要

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.

噴火履歴

5件の記録用語集
概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます · 矢印キーで棒を移動、Enterで表示
紀元前 240~紀元前 41 · 1件 · 最大 VEI ?159~358 · 1件 · 最大 VEI ?1754~1953 · 3件 · 最大 VEI 2紀元前 24035875713551754

詳細タイムライン

  1. 1953年VEI 2観測記録
    1953-06-27 ~ 1957-01-28
    Tuluman
  2. 1931年VEI 0根拠の記載なし
    1931-07-02 ~ 終了日不明
    Tuluman (?)
  3. 1883年VEI 2観測記録
    1883-03-28 ~ 終了日不明
    Tuluman
  4. 350年VEI ?地質学的推定
    350 ~ 終了日不明
    Lou Island (Bedal volcano)
  5. 紀元前 240年 (±100年)VEI ?地質学的推定
    紀元前 240 ~ 終了日不明
    Lou Island (Bedal volcano)

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