Blup Blup
成層火山 · Papua New Guinea · 402m
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- タイプ
- 成層火山
- 国
- Papua New Guinea
- 地域
- Southwestern Pacific Volcanic Regions / Bismarck Volcanic Arc
- 標高
- 402m
- 座標
- -3.507, 144.605
- 最終噴火
- 不明
- テクトニクス環境
- Subduction zone / Continental crust (> 25 km)
- 火山地形
- Composite
- 主要岩石
- Andesite / Basaltic Andesite
地質学的概要
The 2 x 3.5 km forested island of Blup Blup contains lava flows with well-defined flow fronts. Weak thermal areas are located on the W and N coasts. Most eruptive activity at the andesitic-dacitic volcano originated from a summit crater about 800 m in diameter, although there may be a lava dome on a ridge to the W and a small satellite cone along the SW coast. Reports of eruptions in 1616 and 1830 are erroneous, but there may have been eruptions during the Holocene (Johnson, 1990 p.c.). Blocks from a submarine debris avalanche lie to the NE of the island.
Wikipedia の要約
英語版の要約Blup Blup Island is a small forested island off the northern coast of Papua New Guinea about 30 km (19 mi) offshore from Cape Girgir and is considered part of the Schouten Islands. It is located at latitude S 3°30'46" and longitude E 144°35'16" and its highest point is at 402 metres. The island has a small population and is in the Angoram District of the East Sepik Province of PNG.
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