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Kuju Mountains

Kujusan

Stratovolkan · Japan · 1791 m

The Kuju volcano group in northern Kyushu consists of more than ten cones and lava domes NE of Aso caldera. This view from the E shows Mimatayama (right) and Nakadake (left) lava domes, which formed about 10,000-12,000 years ago. Gas-and-steam plumes rising from fumaroles are seen here in 1994 on the flank of Hosshozan (center), the site of small phreatic explosions in November 1995. Many hot springs and hydrothermal fields are located at the Kuju complex.
The Kuju volcano group in northern Kyushu consists of more than ten cones and lava domes NE of Aso caldera. This view from the E shows Mimatayama (right) and Nakadake (left) lava domes, which formed about 10,000-12,000 years ago. Gas-and-steam plumes rising from fumaroles are seen here in 1994 on the flank of Hosshozan (center), the site of small phreatic explosions in November 1995. Many hot springs and hydrothermal fields are located at the Kuju complex. · Foto: Photo by Yasuo Miyabuchi, 1994 (Forestry and Forest Products Research Institute, Kyushu). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Japan
Wilayah
Western Pacific Volcanic Regions / Nankai Volcanic Arc
Ketinggian
1791 m
Koordinat
33.086, 131.249
Letusan terakhir
1996
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Kujusan is a complex of stratovolcanoes and lava domes lying NE of Aso caldera in north-central Kyushu. The group consists of 16 andesitic lava domes, five andesitic stratovolcanoes, and one basaltic cone. Activity dates back about 150,000 years. Six major andesitic-to-dacitic tephra deposits, many associated with the growth of lava domes, have been recorded during the Holocene. Eruptive activity has migrated systematically eastward during the past 5000 years. The latest magmatic activity occurred about 1600 years ago, when Kurodake lava dome at the E end of the complex was formed. The first reports of historical eruptions were in the 17th and 18th centuries, when phreatic or hydrothermal activity occurred. There are also many hot springs and hydrothermal fields. A fumarole on Hosho lava dome was the site of a sulfur mine for at least 500 years. Two geothermal power plants are in operation at Kuju.

Ringkasan Wikipedia

Ringkasan Inggris

Mount Kujū , located on the border of Kokonoe and Taketa in Ōita Prefecture, Japan, is a stratovolcano in Kyushu Island, Japan, with a summit elevation of 1,791 metres (5,876 ft). It is one of the 100 Famous Japanese Mountains. It is part of the Aso-Kujū National Park.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
9160 BCE~8788 BCE · 1 letusan · VEI maks. 47301 BCE~6929 BCE · 1 letusan · VEI maks. ?4698 BCE~4326 BCE · 1 letusan · VEI maks. ?3954 BCE~3582 BCE · 1 letusan · VEI maks. 43211 BCE~2839 BCE · 1 letusan · VEI maks. ?2467 BCE~2095 BCE · 1 letusan · VEI maks. 41723 BCE~1351 BCE · 1 letusan · VEI maks. ?1351 BCE~980 BCE · 1 letusan · VEI maks. 4236 BCE~136 · 1 letusan · VEI maks. 4136~508 · 1 letusan · VEI maks. 31623~1995 · 4 letusan · VEI maks. 29160 BCE6557 BCE3582 BCE980 BCE1623

Garis waktu rinci

  1. 1995VEI 1Teramati
    1995-10-11 – 1996-03-24
    Hosho lava dome (east flank)
  2. 1738VEI 2Perkiraan geologi
    1738-08-13 – Berlangsung
  3. 1675VEI 2Teramati
    1675-06 – Berlangsung
  4. 1662VEI 2Teramati
    1662-01-26 – Berlangsung
  5. 370 (±40 tahun)VEI 3Perkiraan geologi
    370 – Berlangsung
    Kuro-dake
  6. 100 SM (±300 tahun)VEI 4Perkiraan geologi
    BCE 100 – Berlangsung
    Komekubo crater
  7. 990 SM (±940 tahun)VEI 4Perkiraan geologi
    BCE 990 – Berlangsung
    Komekubo crater
  8. 1720 SM (±300 tahun)VEI ?Perkiraan geologi
    BCE 1720 – Berlangsung
    Taisen-Minami
  9. 2440 SM (±300 tahun)VEI 4Perkiraan geologi
    BCE 2440 – Berlangsung
    Danbaru
  10. 3110 SM (±500 tahun)VEI ?Perkiraan geologi
    BCE 3110 – Berlangsung
    Iwaigo-dake, Ogigahana, Hizengajo
  11. 3780 SM (±500 tahun)VEI 4Perkiraan geologi
    BCE 3780 – Berlangsung
    Taisen-Hokubu lava dome
  12. 4490 SM (±500 tahun)VEI ?Perkiraan geologi
    BCE 4490 – Berlangsung
    Tachi-san, Gakurokuji
  13. 7180 SM (±2640 tahun)VEI ?Perkiraan geologi
    BCE 7180 – Berlangsung
    Sensui-zan
  14. 9160 SM (±1190 tahun)VEI 4Perkiraan geologi
    BCE 9160 – Berlangsung

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.