Iōtorishima
Io-Torishima
Vulcano complesso · Japan · 212 m
- Tipo
- Vulcano complesso
- Paese
- Japan
- Regione
- Western Pacific Volcanic Regions / Ryukyu Volcanic Arc
- Altitudine
- 212 m
- Coordinate
- 27.881, 128.223
- Ultima eruzione
- 1968
- Contesto tettonico
- Subduction zone / Oceanic crust (< 15 km)
- Forma vulcanica
- Composite
- Roccia principale
- Andesite / Basaltic Andesite
Sintesi geologica
The 1 x 2.7 km island of Io-Torishima, located north of the largest island of the Ryukyus, Okinawa, is composed of two andesitic volcanoes. Torishima (Bird Island) is a common name for offshore islands in Japan. Kusuku lava dome occupies the center of the inner of two sommas on the SE-most volcano. The summit crater of the NW-most volcano, Iodake, contains a small lake, solfataras, and sulfur deposits that were mined in the past. Historical eruptions dating back to 1664 have consisted of mild-to-moderate explosive activity.
Sintesi da Wikipedia
Riassunto in ingleseIōtorishima , also known as Iwo Tori-shima and Okinawa Torishima (沖縄鳥島), is a volcanic island part of the Ryūkyū Island chain with the only active volcano in Okinawa Prefecture.
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Storia delle eruzioni
Cronologia dettagliata
- 1968VEI 1Osservata1968-07-18 – 1968-07-18
- 1967VEI 1Osservata1967-11-25 – In corso
- 1959VEI 2Osservata1959-06-08 – 1959-07-16Iwo-dake
- 1903VEI 2Osservata1903-03-15 – 1903-08-26
- 1868VEI 1Osservata1868-02 – 1868-04
- 1855VEI 2Osservata1855-03 – 1855-05
- 1829VEI 1Osservata1829-12-01 – 1829-12-16
- 1796VEI 2Osservata1796-10 – 1796-11Iwo-dake
- 1664VEI ?Osservata1664 – In corso
Link esterni
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