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Nuova Zelanda · Stratovulcano

Rumble II West Seamount

Rumble II West

Tipo
Stratovulcano
Altitudine
1200 m (sottomarino)
Ultima eruzione
Sconosciuto
A bathymetric map was made during a 2009 voyage on the research vessel R/V Thompson of Rumble II West submarine volcano. Located NW of Rumble II East, Rumble II West, with a summit depth of 1,200 m, is the deepest of the Rumble group of seamounts, but displays evidence of hydrothermal activity. It contains a 2.5-3 km wide summit caldera about 200 m deep with a central cone. Recent lava flows originating from near the caldera rim with little or no sediment cover are on the S flanks.
A bathymetric map was made during a 2009 voyage on the research vessel R/V Thompson of Rumble II West submarine volcano. Located NW of Rumble II East, Rumble II West, with a summit depth of 1,200 m, is the deepest of the Rumble group of seamounts, but displays evidence of hydrothermal activity. It contains a 2.5-3 km wide summit caldera about 200 m deep with a central cone. Recent lava flows originating from near the caldera rim with little or no sediment cover are on the S flanks. · Foto: Photo courtesy of New Zealand Institute of Geology and Nuclear Sciences, 2009.
Tipo
Stratovulcano
Paese
Nuova Zelanda
Regione
Tonga e Kermadec / Southern Kermadec Volcanic Arc
Altitudine
1200 m (sottomarino)
Coordinate
-35.353, 178.527
Ultima eruzione
Sconosciuto
Contesto tettonico
Zona di subduzione / Crosta oceanica (< 15 km)
Forma vulcanica
Composito
Roccia principale
Andesite / Andesite basaltica
Sintesi geologica

Rumble II West, about 12 km NW of Rumble II East, rises 1,800 m from the ocean floor to within 1,200 m of the surface. Bathymetry shows a 2.5-3 km summit caldera about 200 m deep with a central cone. There is evidence of hydrothermal activity, and cones are present on the flanks. Some lava flows on the western flanks originating from near the caldera rim have little or no sediment cover.

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