Selandia Baru · Kaldera
Brothers Seamount
Brothers
- Tipe
- Kaldera
- Ketinggian
- 1350 m (bawah laut)
- Letusan terakhir
- Tidak diketahui
- Tipe
- Kaldera
- Negara
- Selandia Baru
- Wilayah
- Tonga & Kermadec / Southern Kermadec Volcanic Arc
- Ketinggian
- 1350 m (bawah laut)
- Koordinat
- -34.875, 179.067
- Letusan terakhir
- Tidak diketahui
- Kondisi tektonik
- Zona subduksi / Kerak samudra (< 15 km)
- Bentuk lahan
- Kaldera
- Batuan utama
- Dasit
Ringkasan geologi
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.
Ringkasan Wikipedia
Ringkasan InggrisThe 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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