日本 · 成層火山
御蔵島
Mikurajima
- タイプ
- 成層火山
- 標高
- 851m
- 最終噴火
- -4100年
- タイプ
- 成層火山
- 国
- 日本
- 地域
- 北西太平洋 / Izu Volcanic Arc
- 標高
- 851m
- 座標
- 33.874, 139.602
- 最終噴火
- -4100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
- 玄武岩 / ピクライト質玄武岩
地質学的概要
Mikurajima is a small steep-sided island located between the more well-known Miyakejima and Hachijojima volcanoes. Oyama forms the summit of the basaltic-to-andesitic island, which is surrounded by cliffs and dissected on the southern-to-eastern sides. The sparsely populated island consists of a large stratovolcano with lava domes on the SE side. Several small sea stacks are located immediately offshore. Growth of the stratovolcano took place until about 7,000 years ago, and the latest activity occurred about 6,000 years ago, when explosive eruptions and pyroclastic surges accompanied lava dome growth.
Wikipedia の要約
英語版の要約Mikura-jima (御蔵島) is an inhabited volcanic Japanese island in the Pacific Ocean. The island is administered by Tōkyō Metropolis and is located approximately 200 kilometres (120 mi) south of Tokyo and 19 kilometres (12 mi) south-southeast of Miyakejima. It is one of the Izu Seven Islands group of the seven northern islands of the Izu archipelago. Mikurashima is administratively part of Mikurashima Village under Miyake Subprefecture of Tokyo Metropolis. As of 2009, the island's population was 351. Mikura-shima is also within the boundaries of the Fuji-Hakone-Izu National Park.
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噴火履歴
2件の記録用語集詳細タイムライン
- 紀元前 4100年 (±100年)VEI ?地質学的推定紀元前 4100 ~ 終了日不明Tsubunegamori & Yasukajigamori domes
- 紀元前 5050年VEI ?地質学的推定紀元前 5050 ~ 終了日不明
近くの火山
外部リンク
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