Japan · Stratovolcano
Suiyō Seamount
Suiyo Seamount
- Type
- Stratovolcano
- Elevation
- 991m (submarine)
- Last eruption
- Unknown
- Type
- Stratovolcano
- Country
- Japan
- Region
- Northwestern Pacific / Ogasawara Volcanic Arc
- Elevation
- 991m (submarine)
- Coordinates
- 28.575, 140.633
- Last eruption
- Unknown
- Tectonic setting
- Subduction zone / Crustal thickness unknown
- Landform
- Composite
- Major rock type
- Andesite / Basaltic andesite
Geological summary
Suiyo, one of the Shichiyo Seamounts, named for the seven days of the week, lies south of Sofugan volcano. Suiyo ("Wednesday") is a basaltic-to-dacitic submarine volcano and lava dome that rises about 1,400 m from the sea floor to within about 1,000 m of the surface. The summit crater is 1.5 km wide and about 500 m deep. Major hydrothermal activity was observed in July 1991, with temperatures reaching more the 290°C, and the volcano was reclassified as active by the Japan Meteorological Agency.
Eruption history
GlossaryDetailed timeline
No eruption records available.
Nearby volcanoes
External links
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