New Zealand · Caldera
Brothers Seamount
Brothers
- Type
- Caldera
- Elevation
- 1350m (submarine)
- Last eruption
- Unknown
- Type
- Caldera
- Country
- New Zealand
- Region
- Tonga & Kermadec / Southern Kermadec Volcanic Arc
- Elevation
- 1350m (submarine)
- Coordinates
- -34.875, 179.067
- Last eruption
- Unknown
- Tectonic setting
- Subduction zone / Oceanic crust (< 15 km)
- Landform
- Caldera
- Major rock type
- Dacite
Geological summary
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.
From Wikipedia
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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Eruption history
GlossaryDetailed timeline
No eruption records available.
Nearby volcanoes
External links
⚠ For reference only. Not for emergency response.