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Vulcano Brothers

Brothers

Caldera · New Zealand · 1350 m (sottomarino)

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. · Foto: Image courtesy of New Zealand-American Submarine Ring of Fire 2005 Exploration, NOAA Vents Program. · Wikimedia Commons
Tipo
Caldera
Paese
New Zealand
Regione
Tonga-Kermadec Volcanic Regions / Southern Kermadec Volcanic Arc
Altitudine
1350 m (sottomarino)
Coordinate
-34.875, 179.067
Ultima eruzione
Sconosciuto
Contesto tettonico
Subduction zone / Oceanic crust (< 15 km)
Forma vulcanica
Caldera
Roccia principale
Dacite
Sintesi geologica

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.

Sintesi da Wikipedia

Il vulcano Brothers è vulcano sottomarino presso le isole Kermadec, nell'oceano Pacifico, a 340 km a N-E di Whakaari, un'isola appartenente alla Nuova Zelanda.

Wikipedia · CC BY-SA · Leggi l'articolo completo →

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