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The island is a basalt pillar with sheer sides, the only visible portion of a submarine volcanic caldera extending 2.6 kilometres (1.6 mi) south-east at an average depth of 240 metres (790 ft). The above sea-level portion measures approximately 84 metres east-west and 56 metres north-south, with a summit height of 99 metres (325 ft).
Taal Volcano, an island volcano in the Philippines; ... Vulcano Island, a small volcanic island in the Tyrrhenian Sea; Other uses. Nicktoons: ...
The Izu–Bonin–Mariana (IBM) arc system is a tectonic plate convergent boundary in Micronesia.The IBM arc system extends over 2800 km south from Tokyo, Japan, to beyond Guam, and includes the Izu Islands, the Bonin Islands, and the Mariana Islands; much more of the IBM arc system is submerged below sealevel.
Ruby Seamount is an active volcanic seamount in the Northern Mariana Islands region of the Pacific Ocean about 50 km (31 mi) north-west of Saipan. [ 5 ] [ 1 ] It is in a region where the Pacific Plate is subducting under the Philippine Sea Plate producing arc volcanism .
[1] [2] The islands are all active volcanoes lying atop the Izu–Bonin–Mariana Arc that stretches south to the Marianas. They have an area of 32.55 square kilometres (12.57 sq mi), and a population of 380. The island of Iwo Jima in the Volcano Islands lies about 1,240 kilometres (670 nmi; 771 mi) southeast of Miyazaki. [3]
North Iwo Jima (Japanese: 北硫黄島, Kita Iwōjima, "North Sulfur Island"), [1] now officially North or Kita Iōtō (written with the same characters) and previously known as Santo [2] or San Alessandro, [3] Hooge Meeuwen Island (Dutch: t'Hooge Meuwen Eylandt, "High Seagull Island"), [4] and North Sulfur Island, is the northernmost member of Japan's Volcano Islands.
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Map of world's major seamounts.. A list of active and extinct submarine volcanoes and seamounts located under the world's oceans. There are estimated to be 40,000 to 55,000 seamounts in the global oceans. [1]