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Geologically, a volcanic island is an island of volcanic origin. The term high island can be used to distinguish such islands from low islands , which are formed from sedimentation or the uplifting of coral reefs (which have often formed on sunken volcanoes).
Tofua caldera. Tofua is a volcanic island in Tonga.Located in the Haʻapai island group, it is a steep-sided composite cone with a summit caldera.It is part of the highly active Kermadec-Tonga subduction zone and its associated volcanic arc, which extends from New Zealand north-northeast to Fiji, and is formed by the subduction of the Pacific Plate under the Indo-Australian Plate. [2]
Tseax Cone (/ ˈ s iː æ k s / SEE-aks) is a small volcano in the Nass Ranges of the Hazelton Mountains in northwestern British Columbia, Canada.It has an elevation of 609 metres (1,998 feet) and lies within an east–west valley through which a tributary of the Tseax River flows.
Nisyros also spelled Nisiros (Greek: Νίσυρος, romanized: Nísyros; Modern Greek pronunciation:) is a volcanic Greek island and municipality located in the Aegean Sea.It is part of the Dodecanese group of islands, situated between the islands of Kos and Tilos.
Niuafoʻou (meaning many new coconuts) is the northernmost island in the kingdom of Tonga. One of the Niua Islands , it is located in the southern Pacific Ocean between Fiji and Samoa , 574 km (357 mi) north of Tongatapu island group and 337 km (209 mi) northwest of Vavaʻu .
The island of Vanuavatu, although closer to the islands of Lakeba and Nayau than the island of Totoya, is listed as the fifth village within the District and is the seat of Tui Vanua. Vanuavatu has historically and traditionally been the personal possession of the Turaga Na Roko Sau, the High Chief of Totoya and the Yasayasa Moala Group as a whole.
Lacking a central volcanic cone, the Svartsengi volcanic system consists of a set of fissures, cones and volcanic craters aligned over 30 km (19 mi) in length and 7 km (4.3 mi) in width, oriented north-east to south-west and surrounded by fields of lava: [3] Þorbjörn (243 m (797 ft)), Hagafell (158 m (518 ft)), Sundhnúkur 134 m (440 ft) (Sundhnúksgígar means the associated crater row ...
The region is about nine kilometres (5 + 1 ⁄ 2 miles) to the south of Iceland's international airport. [5] It is about 25 km 2 (9.7 sq mi) [4] and includes the Reykjanes volcanic system that extends in a linear fashion up its centre continuing to the north-east as the hill of Sýrfell at 93 m (305 ft) high. [1]