Shiretoko-Iwo-zan

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Shiretoko-Iwo-zan volcano

stratovolcano 1563 m / 5,128 ft
Hokkaido, Japan, 44.13°N / 145.17°E
Current status: dormant (1 out of 5)

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Typical eruption style: explosive
Shiretoko-Iwo-zan volcano eruptions: 1936, 1890, 1889, 1880 (?), 1876, 1857 (?)
Last earthquakes nearby:

Time	Mag. / Depth	Distance	Location
Tue, 23 Apr
Tue, 23 Apr 20:42 UTC	M 1.5 / 116 km	12 km	国後島付近 (Near Kunashiri island)
Tue, 23 Apr 04:35 UTC	M 1.8 / 147 km	19 km	国後島付近 (Near Kunashiri island)
Wed, 17 Apr
Wed, 17 Apr 17:13 UTC	M 1.8 / 142 km	10 km	国後島付近 (Near Kunashiri island)
Mon, 1 Apr
Mon, 1 Apr 13:27 UTC	M 0.9 / 107 km	6 km	国後島付近 (Near Kunashiri island)
Fri, 29 Mar
Fri, 29 Mar 20:14 UTC	M 0.8 / 10 km	35 km	網走地方 (Abashiri district)

View all recent quakes

Shiretoko-Iwo-zan volcano is an active stratovolcano on the NE tip of Hokkaido on the Shiretoko Peninsula. It is known as one of the many Japanese "sulfur mountains". During eruptions in 1936 and 1889, the volcano erupted molten sulfur.
The Shiretoko Peninsula was declared a Unesco World Heritage Site in 2005.

Background:

Shiretoko-Iwo-zan is an andesitic stratovolcano with 2 large craters at the summit breached to the NW. The southern crater contains a small flat-topped lava dome. The main cone, Naka-dake, was built NW of the headwalls of the 2 summit craters. Historical eruptions have originated from the southernmost of 3 explosion craters along a NNE-SSW line on the NW flank of the main cone of Shiretoko-Iwo-san.
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Source: Smithsonian / GVP volcano information

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