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Brothers Seamount

Brothers

カルデラ · New Zealand · 1350m (海底)

Submarine hydrothermal activity occurs at Brothers volcano, as seen here at this tall (up to 4 m high), active black smoker chimney, which is part of a large field of vents on the NW caldera wall. The oval-shaped caldera is 3-3.5 km wide and contains a post-caldera lava dome constructed on the S caldera floor.
Submarine hydrothermal activity occurs at Brothers volcano, as seen here at this tall (up to 4 m high), active black smoker chimney, which is part of a large field of vents on the NW caldera wall. The oval-shaped caldera is 3-3.5 km wide and contains a post-caldera lava dome constructed on the S caldera floor. · 写真: Image courtesy of New Zealand-American Submarine Ring of Fire 2005 Exploration, NOAA Vents Program. · Wikimedia Commons
タイプ
カルデラ
国
New Zealand
地域
Tonga-Kermadec Volcanic Regions / Southern Kermadec Volcanic Arc
標高
1350m (海底)
座標
-34.875, 179.067
最終噴火
不明
テクトニクス環境
Subduction zone / Oceanic crust (< 15 km)
火山地形
Caldera
主要岩石
Dacite
地質学的概要

The submarine Brothers volcano, located NE of the Healy submarine volcano, contains an oval-shaped summit caldera 3-3.5 km elongated NW-SE. The high point of the dominantly dacitic edifice lies on the NW caldera rim at about 1,350 m below the ocean surface. The caldera floor is at about 1,850 m depth, and a post-caldera lava dome partially merges with the southern caldera wall. There is significant hydrothermal activity, including a large field of "black smoker" vents on the NW caldera wall and vents on the post-caldera dome.

Wikipedia の要約

英語版の要約

The Brothers Seamount is a Pacific Ocean submarine volcano in the Kermadec Arc, 340 kilometres (210 mi) north east of New Zealand's Whakaari/White Island. It is one of the South Kermadec Ridge Seamounts.

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