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Iriomote-jima volcano

submarine volcano -200 m / -656 ft
Ryukyu Islands, Japan, 24.56°N / 124°E
Current status: normal or dormant (1 out of 5) | Reports
Iriomote-jima volcano books
Typical eruption style: explosive
Iriomote-jima volcano eruptions: 1924: large explosive submarine eruptionNo recent earthquakes
TimeMag. / DepthDistanceLocation
Iriomote-jima volcano is a shallow submarine volcano 25 km NNE of the island of the same name.
Iriomote-jima island is the southernmost in the chain of the Ryuku Islands which still belong to Japan. It is located almost 1000 km SSW of Japan's main island Honshu and only 200 km east of Taiwan.

Background:

Iriomote-jima volcano lies in an area with an estimated depth of 200-300 m. A major submarine eruption took place at this volcano on 31 October 31 1924. It was one of the largest historical eruptions in Japan. The eruption produced about 1 cubic kilometer of rhyolitic pumice, which formed large rafts on the sea, which were drifted by currents as far as Hokkaido in the north, about 2000 km distance. The largest pumice blocks exceeded 1 x 2 m in size.


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