Japan (administered by Russia) · Complex volcano
Grozny Ridge
Etorofu-Yakeyama [Grozny Group]
- Type
- Complex volcano
- Elevation
- 1147m
- Last eruption
- 2013
- Type
- Complex volcano
- Country
- Japan (administered by Russia)
- Region
- Northwestern Pacific / Kuril Volcanic Arc
- Elevation
- 1147m
- Coordinates
- 45.011, 147.872
- Last eruption
- 2013
- Tectonic setting
- Subduction zone / Intermediate crust (15-25 km)
- Landform
- Composite
- Major rock type
- Andesite / Basaltic andesite
Geological summary
The Etorofu-Yakeyama (Ivan Grozny) complex is located in the center of Iturup Island. It has a 3-3.5 km diameter caldera open to the south, where a large extrusive andesitic dome was emplaced. Several other lava domes of Holocene age were constructed to the NE; extrusion of these domes has constricted a former lake in the northern side of the caldera to an extremely sinuous shoreline. Recorded eruptions, the first of which took place in 1968, have been from the central Yakeyama (Grozny) dome.
From Wikipedia
Grozny Group is a complex volcano located in the central part of Iturup Island, Kuril Islands, controlled by Russia, and claimed by Japan.
Wikipedia · CC BY-SA · Read full article →
Eruption history
7 recordedGlossaryDetailed timeline
- 2013VEI 2Observed2013-02-16 – 2013-04-04Etorofu-Yake-yama / Ivan Grozny
- 2012VEI 2Observed2012-08-16 – 2012-08-25Etorofu-Yake-yama / Ivan Grozny
- 1989VEI 2Observed1989-05-03 – 1989-08-05Ivan Grozny
- 1973VEI 1Observed1973-01-16 – 1973-01-16Ivan Grozny
- 1973VEI 2Observed1973-05-16 – 1973-05-17Ivan Grozny (N flank of cent. dome)
- 1970VEI 1Observed1970-07-02 – end unknownIvan Grozny
- 1968VEI 1Observed1968-02-16 – 1968-02-16Ivan Grozny
Nearby volcanoes
External links
⚠ For reference only. Not for emergency response.