also Mount Iwo is an active
andesitic stratovolcano
A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and per ...
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
is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel.
The la ...
,
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
. 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
In volcanology, a lava dome is a circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions on ...
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
*
List of mountains in Japan
*
List of volcanoes in Japan
References
External links
*
Shiretoko-Iozan- Japan Meteorological Agency
* - Japan Meteorological Agency
Io
Io
Io
Holocene stratovolcanoes
{{Hokkaido-geo-stub