also Mount Iwo is an active
andesitic
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predomin ...
stratovolcano on the
Shiretoko Peninsula
is located on the easternmost portion of the Japanese island of Hokkaidō, protruding into the Sea of Okhotsk. It is separated from Kunashir Island, which is now occupied by Russia, by the Nemuro Strait. The name Shiretoko is derived from the ...
of
Hokkaidō,
Japan. It sits within the borders of the town of
Shari. Mount Iō is known for erupting liquid sulphur in the eruptions of 1889 and 1936.
Mount Iō literally means, ''sulphur mountain''. There are two explosion craters and a
lava dome at the summit of the volcano.
[神沼克伊,小山悦郎 ''日本の火山を科学する 日本列島津々浦々、あなたの身近にある108の活火山とは？'' ソフトバンククリエイティブ 2011. .]
History of eruptions
Volcanic activity started at least 240,000 years ago.
Mount Iō has erupted at the following times:
#850 AD ± 500 years
#1857–1858
#23–26 September 1876
#24–26 November 1880
#9–26 August 1889
#15 June 1890–unknown
#December 1935–October 1936
See also
*
Shiretoko National Park
covers most of the Shiretoko Peninsula at the northeastern tip of the island of Hokkaidō, Japan. The word "Shiretoko" is derived from an Ainu word "sir etok", meaning "the place where the earth protrudes".
One of the most remote regions in J ...
*
List of mountains in Japan
The following is a list of the mountains and hills of Japan, ordered by height.
Mountains over 1000 meters
Mountains under 1000 meters
As the generally accepted definition of a mountain (versus a hill) is 1000 m of height and 500 m of pro ...
*
List of volcanoes in Japan
This is a list of active and extinct volcanoes in Japan. An Orange background indicates a volcano considered active by the Japan Meteorological Agency.
Hokkaido
Honshū
Izu Islands
Ogasawara Archipelago
The Ogasawara Archipelag ...
References
External links
*
Shiretoko-Iozan- Japan Meteorological Agency
* - Japan Meteorological Agency
Io
Io
Io
Holocene stratovolcanoes
{{Hokkaido-geo-stub