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Mount Azuma-kofuji

Azumayama

Stratovulcano · 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
Tipo
Stratovulcano
Paese
Japan
Regione
Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
Altitudine
1949 m
Coordinate
37.735, 140.244
Ultima eruzione
1977
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

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.

Sintesi da Wikipedia

Riassunto in inglese

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

Wikipedia · CC BY-SA · Leggi l'articolo completo →

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
5700 BCE~5444 BCE · 1 eruzioni · VEI max. 25444 BCE~5188 BCE · 1 eruzioni · VEI max. 14676 BCE~4420 BCE · 1 eruzioni · VEI max. ?4165 BCE~3909 BCE · 1 eruzioni · VEI max. 33141 BCE~2885 BCE · 1 eruzioni · VEI max. 12885 BCE~2629 BCE · 1 eruzioni · VEI max. ?1861 BCE~1606 BCE · 1 eruzioni · VEI max. ?1094 BCE~838 BCE · 1 eruzioni · VEI max. ?326 BCE~70 BCE · 1 eruzioni · VEI max. ?442~698 · 1 eruzioni · VEI max. ?1209~1465 · 1 eruzioni · VEI max. 11465~1721 · 1 eruzioni · VEI max. 11721~1977 · 12 eruzioni · VEI max. 15700 BCE3909 BCE1861 BCE70 BCE1721

Cronologia dettagliata

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

Link esterni

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