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Grozny Ridge

Etorofu-Yakeyama [Grozny Group]

Gunung api kompleks · Japan - administered by Russia · 1158 m

The Yakeyama (Grozny) andesitic lava dome is seen from the N with lava flows descending into Lopasnoye lake in the foreground. The Etorofu-Yakeyama (Ivan Grozny) volcano group in central Iturup Island includes multiple Holocene lava domes.
The Yakeyama (Grozny) andesitic lava dome is seen from the N with lava flows descending into Lopasnoye lake in the foreground. The Etorofu-Yakeyama (Ivan Grozny) volcano group in central Iturup Island includes multiple Holocene lava domes. · Foto: Photo by A. Korablev, 1993 (Institute of Marine Geology and Geophysics, Yuzhno-Sakhalin). · Wikimedia Commons
Tipe
Gunung api kompleks
Negara
Japan - administered by Russia
Wilayah
Northwestern Pacific Volcanic Regions / Kuril Volcanic Arc
Ketinggian
1158 m
Koordinat
45.012, 147.871
Letusan terakhir
2013
Kondisi tektonik
Subduction zone / Intermediate crust (15-25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

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.

Ringkasan Wikipedia

Ringkasan Inggris

Grozny Group is a complex volcano located in the central part of Iturup Island, Kuril Islands, controlled by Russia, and claimed by Japan.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1968~1973 · 2 letusan · VEI maks. 11973~1977 · 2 letusan · VEI maks. 21986~1991 · 1 letusan · VEI maks. 22009~2013 · 2 letusan · VEI maks. 219681977199120002009

Garis waktu rinci

  1. 2013VEI 2Teramati
    2013-02-16 – 2013-04-04
    Etorofu-Yake-yama / Ivan Grozny
  2. 2012VEI 2Teramati
    2012-08-16 – 2012-08-25
    Etorofu-Yake-yama / Ivan Grozny
  3. 1989VEI 2Teramati
    1989-05-03 – 1989-08-05
    Ivan Grozny
  4. 1973VEI 1Teramati
    1973-01-16 – 1973-01-16
    Ivan Grozny
  5. 1973VEI 2Teramati
    1973-05-16 – 1973-05-17
    Ivan Grozny (N flank of cent. dome)
  6. 1970VEI 1Teramati
    1970-07-02 – Berlangsung
    Ivan Grozny
  7. 1968VEI 1Teramati
    1968-02-16 – 1968-02-16
    Ivan Grozny

Tautan eksternal

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