三瓶山

Sanbesan

成層火山 · Japan · 1126m

Sanbe is the SW-most Holocene volcano on the island of Honshu. Seen here from the S, the highest peak is called Osanbe. It is flanked by Mesanbe on the right, Kosanbe on the left, and Magosanbe in the center. Sanbe had a large explosive eruption about 3,700 years ago that originated from Taiheizan lava dome. · 写真: Photo by Yoshinobu Tatsu, 1998 (Shimane Prefectural Sanbe Shizenkan Nature Museum). · Wikimedia Commons

タイプ: 成層火山
国: Japan
地域: 西太平洋 / Nankai Volcanic Arc
標高: 1126m
座標: 35.141, 132.622
最終噴火: 650年
テクトニクス環境: Subduction zone / Continental crust (> 25 km)
火山地形: Composite
主要岩石: Dacite

地質学的概要

Sanbesan stratovolcano, near the northern coast of SW Honshu, has a summit cut by a small caldera about 1 km in diameter. The highest point on the dacitic-to-andesitic volcano is O-Sanbe, at the northern end of the complex. There have been several large explosive eruptions during the Pleistocene and one strong Holocene eruption from the Taiheizan lava dome about 3,700 years ago. This eruption was accompanied by pyroclastic flows that swept down the NE-to-SE flanks and traveled 9 km down the Hayamizu River to the SW. Younger, undated eruptions have also occurred (Machida and Arai, 1992).

Wikipedia の要約

英語版の要約

Mount Sanbe, also known as Sanbesan, is an active stratovolcano in Ōda, Shimane Prefecture. The highest peak, Osanbe, has an elevation of 1,126 m (3,694 ft). At the center of the volcano is a caldera 1 km (0.62 mi) across. The volcano's composition is mainly dacite and andesite.

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噴火履歴

概要 (VEI時系列)

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詳細タイムライン

650年 (±50年)VEI ?地質学的推定
650 ~ 進行中
紀元前 1920年VEI 4地質学的推定
BCE 1920 ~ 進行中
Taihei-zan
紀元前 3550年 (±50年)VEI ?地質学的推定
BCE 3550 ~ 進行中

外部リンク

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