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トドコ＝ラヌ山

Todoko-Ranu

カルデラ · Indonesia · 979m

The twin caldera complex of Todoko-Ranu appears in this NASA Landsat image of western Halmahera Island (with north to the top). Todoko caldera (the circular feature just left of center) lies SW of nested calderas at Ranu, the northern of which contains a lake, faintly visible above the clouds above and to the right of the center of the image. No historical eruptions have been reported from the complex, but fumaroles and hot springs are present, and youthful-looking lava flows have reached the sea.
The twin caldera complex of Todoko-Ranu appears in this NASA Landsat image of western Halmahera Island (with north to the top). Todoko caldera (the circular feature just left of center) lies SW of nested calderas at Ranu, the northern of which contains a lake, faintly visible above the clouds above and to the right of the center of the image. No historical eruptions have been reported from the complex, but fumaroles and hot springs are present, and youthful-looking lava flows have reached the sea. · 写真: NASA Landsat 7 image (worldwind.arc.nasa.gov) · Wikimedia Commons
タイプ
カルデラ
国
Indonesia
地域
西太平洋 / Halmahera Volcanic Arc
標高
979m
座標
1.239, 127.456
最終噴火
不明
テクトニクス環境
Subduction zone / Oceanic crust (< 15 km)
火山地形
Composite
主要岩石
Andesite / Basaltic Andesite
地質学的概要

Todoko-Ranu is a large volcanic complex south of Gamkonora in North Maluku, Halmahera, that includes two calderas. The 2 x 2.8 km nested Ranu calderas on the north contains a caldera lake in the smaller one. The lava-filled Todoko caldera is south of the Ranu calderas. The post-caldera Sahu cone, on the S flank of Todoko, is the high point of the complex. Gunung Onu, NW of Ranu caldera, lies at the northern end of the complex. No eruptions have been reported, but it was mapped as Holocene (Supriatna, 1980). Fumaroles are present at Ranu caldera and hot springs are found on Mt. Sahu. Youthful-looking lava flows reach the sea from several locations within the complex.

噴火履歴

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