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Lot's Wife

Sofugan

Stratovolcano · Japan · 99m

The Sofugan pinnacle seen here from the W rises about 100 m above the ocean surface south of Torishima volcano. It is the remnant of a large volcano that is 28 km wide at its base and rose 2,200 m above the sea floor. In 1975 discolored sea water was observed about 500 m N.
The Sofugan pinnacle seen here from the W rises about 100 m above the ocean surface south of Torishima volcano. It is the remnant of a large volcano that is 28 km wide at its base and rose 2,200 m above the sea floor. In 1975 discolored sea water was observed about 500 m N. · Photo: Copyrighted photo by Makoto Yuasa, 1985 (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/). · Wikimedia Commons
Type
Stratovolcano
Country
Japan
Region
Northwestern Pacific / Izu Volcanic Arc
Elevation
99m
Coordinates
29.794, 140.342
Last eruption
Unknown
Tectonic setting
Subduction zone / Oceanic crust (< 15 km)
Landform
Composite
Major rock type
Basalt / Picro-Basalt
Geological summary

Sofugan is a steep-sided pinnacle that rises 99 m above the sea surface south of Torishima volcano. Its dramatic and isolated setting prompted it to also be known as "Lot's Wife Rocks." The basaltic-to-andesitic pinnacle is the remnant of a large stratovolcano that is 28 km wide at its base and rises 2200 m above the sea floor. A submarine depression lies between the pinnacle and an arcuate submarine ridge to the SW that rises to less than 150 m of the sea surface. In 1975 discolored sea water was observed about 500 m north of Sofugan, and the volcano was reclassified as active by the Japan Meteorological Agency in 2003.

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1975~1975 · 1 eruptions · max VEI 019751975197619761976

Detailed timeline

  1. 1975VEI 0Geological estimate
    1975-07-02 – Ongoing

External links

⚠ For reference only. Not for emergency response.