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Mount Azuma-kofuji

Azumayama

Stratovolkan · Japan · 1949 m

The Azuma Kofuji cone with its 300-m-wide crater is one of many volcanic features of the Azumayama complex. This volcano group consists of a cluster of cones and lava domes. Volcanic activity has migrated to the E, with the Higashi-Azuma volcano group being the youngest. This photo was taken from the NW on the flanks of Issaikyoyama, which has been the site of historical eruptions (mostly small phreatic explosions).
The Azuma Kofuji cone with its 300-m-wide crater is one of many volcanic features of the Azumayama complex. This volcano group consists of a cluster of cones and lava domes. Volcanic activity has migrated to the E, with the Higashi-Azuma volcano group being the youngest. This photo was taken from the NW on the flanks of Issaikyoyama, which has been the site of historical eruptions (mostly small phreatic explosions). · Foto: Photo by Lee Siebert, 1988 (Smithsonian Institution). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Japan
Wilayah
Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
Ketinggian
1949 m
Koordinat
37.735, 140.244
Letusan terakhir
1977
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The Azumayama volcanic group consists of a cluster of stratovolcanoes, shield volcanoes, lava domes, and pyroclastic cones. The andesitic and basaltic complex was constructed in two E-W rows above a relatively high basement of Tertiary sedimentary rocks and granodiorites west of Fukushima city. Volcanic activity has migrated to the east, with the Higashi-Azuma volcano group being the youngest. The symmetrical Azuma-Kofuji crater and a nearby fumarolic area on the flank of Issaikyo volcano are popular tourist destinations. The Azumayama complex contains several crater lakes, including Goshikinuma and Okenuma. Historical eruptions, mostly small phreatic explosions, have been restricted to Issaikyo volcano at the northern end of the Higashiyama group.

Ringkasan Wikipedia

Ringkasan Inggris

Mount Azuma-kofuji (吾妻小富士) is an active stratovolcano in Fukushima prefecture, Japan.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
5700 BCE~5444 BCE · 1 letusan · VEI maks. 25444 BCE~5188 BCE · 1 letusan · VEI maks. 14676 BCE~4420 BCE · 1 letusan · VEI maks. ?4165 BCE~3909 BCE · 1 letusan · VEI maks. 33141 BCE~2885 BCE · 1 letusan · VEI maks. 12885 BCE~2629 BCE · 1 letusan · VEI maks. ?1861 BCE~1606 BCE · 1 letusan · VEI maks. ?1094 BCE~838 BCE · 1 letusan · VEI maks. ?326 BCE~70 BCE · 1 letusan · VEI maks. ?442~698 · 1 letusan · VEI maks. ?1209~1465 · 1 letusan · VEI maks. 11465~1721 · 1 letusan · VEI maks. 11721~1977 · 12 letusan · VEI maks. 15700 BCE3909 BCE1861 BCE70 BCE1721

Garis waktu rinci

  1. 1977VEI 1Teramati
    1977-12-07 – 1977-12-07
    Issaikyo (Oana)
  2. 1966VEI 1Perkiraan geologi
    1966-05-16 – 1966-08-16
    Issaikyo (Oana)
  3. 1952VEI 1Perkiraan geologi
    1952-06-18 – Berlangsung
    Issaikyo
  4. 1950VEI 1Teramati
    1950-02-10 – 1950-02-19
    Issaikyo (Oana and NW of Oana)
  5. 1914VEI 1Perkiraan geologi
    1914-11-12 – 1914-11-14
    Issaikyo
  6. 1896VEI 1Perkiraan geologi
    1896-09-05 – 1896-09-19
  7. 1895VEI 1Teramati
    1895-03-08 – 1895-09-13
    Issaikyo (near Oana)
  8. 1894VEI 1Teramati
    1894-03-16 – 1894-04-12
    Issaikyo (near Oana)
  9. 1893VEI 1Teramati
    1893-05-19 – 1893-07-13
    Issaikyo (west of Oana)
  10. 1893VEI 1Teramati
    1893-11-09 – 1893-11-10
    Issaikyo
  11. 1844VEI 1Perkiraan geologi
    1844 – Berlangsung
    Issaikyo (Oana)
  12. 1800VEI ?Teramati
    1800 – Berlangsung
    Issaikyo (Oana)
  13. 1711VEI 1Teramati
    1711 – Berlangsung
    Issaikyo (Oana area)
  14. 1331VEI 1Teramati
    1331 – Berlangsung
    Issaikyo
  15. 600 (±200 tahun)VEI ?Perkiraan geologi
    600 – Berlangsung
  16. 150 SM (±200 tahun)VEI ?Perkiraan geologi
    BCE 150 – Berlangsung
    Issaikyo
  17. 950 SM (±100 tahun)VEI ?Perkiraan geologi
    BCE 950 – Berlangsung
    Issaikyo
  18. 1800 SM (±50 tahun)VEI ?Perkiraan geologi
    BCE 1800 – Berlangsung
    Issaikyo
  19. 2750 SM (±200 tahun)VEI ?Perkiraan geologi
    BCE 2750 – Berlangsung
    Issaikyo
  20. 3000 SM (±50 tahun)VEI 1Perkiraan geologi
    BCE 3000 – Berlangsung
    Issaikyo
  21. 4150 SM (±500 tahun)VEI 3Perkiraan geologi
    BCE 4150 – Berlangsung
    Azuma Ko-Fuji
  22. 4550 SM (±1000 tahun)VEI ?Perkiraan geologi
    BCE 4550 – Berlangsung
    Issaikyo-Minami
  23. 5400 SM (±200 tahun)VEI 1Perkiraan geologi
    BCE 5400 – Berlangsung
    Goshiki-numa
  24. 5700 SM (±50 tahun)VEI 2Perkiraan geologi
    BCE 5700 – Berlangsung
    Oke-numa

Tautan eksternal

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