Japan · Complex volcano
Iōtorishima
Io-Torishima
- Type
- Complex volcano
- Elevation
- 212m
- Last eruption
- 1968
- Type
- Complex volcano
- Country
- Japan
- Region
- Western Pacific / Ryukyu Volcanic Arc
- Elevation
- 212m
- Coordinates
- 27.881, 128.223
- Last eruption
- 1968
- Tectonic setting
- Subduction zone / Oceanic crust (< 15 km)
- Landform
- Composite
- Major rock type
- Andesite / Basaltic andesite
Geological summary
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.
From Wikipedia
Iōtorishima , 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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Eruption history
9 recordedGlossaryDetailed timeline
- 1968VEI 1Observed1968-07-18 – 1968-07-18
- 1967VEI 1Observed1967-11-25 – end unknown
- 1959VEI 2Observed1959-06-08 – 1959-07-16Iwo-dake
- 1903VEI 2Observed1903-03-15 – 1903-08-26
- 1868VEI 1Observed1868-02-16 – 1868-04-16
- 1855VEI 2Observed1855-03-16 – 1855-05-16
- 1829VEI 1Observed1829-12-01 – 1829-12-16
- 1796VEI 2Observed1796-10 – 1796-11Iwo-dake
- 1664VEI ?Observed1664 – end unknown
Nearby volcanoes
External links
⚠ For reference only. Not for emergency response.