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Mount Tokachi

Tokachidake

Stratovulcano · Japan · 2077 m

Snowpack on the western flank of Tokachi preserves individual layers of pyroclastic surge and pyroclastic flow deposits from the 1988-89 eruption. Because the eruptions took place during the winter, snowfall proved very useful to scientists in distinguishing the deposits of small-scale eruptions that lasted only a very short time.
Snowpack on the western flank of Tokachi preserves individual layers of pyroclastic surge and pyroclastic flow deposits from the 1988-89 eruption. Because the eruptions took place during the winter, snowfall proved very useful to scientists in distinguishing the deposits of small-scale eruptions that lasted only a very short time. · Foto: Photo courtesy of Japan Meteorological Agency, 1988. · Wikimedia Commons
Tipo
Stratovulcano
Paese
Japan
Regione
Northwestern Pacific Volcanic Regions / Kuril Volcanic Arc
Altitudine
2077 m
Coordinate
43.418, 142.686
Ultima eruzione
2004
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

Tokachidake volcano consists of a group of dominantly andesitic stratovolcanoes and lava domes arranged on a NE-SW line above a plateau of welded Pleistocene tuffs in central Hokkaido. Numerous explosion craters and cinder cones are located on the upper flanks of the small stratovolcanoes, with the youngest Holocene centers located at the NW end of the chain. Frequent historical eruptions, consisting mostly of mild-to-moderate phreatic explosions, have been recorded since the mid-19th century. Two larger eruptions occurred in 1926 and 1962. Partial cone collapse of the western flank during the 1926 eruption produced a disastrous debris avalanche and mudflow.

Sintesi da Wikipedia

Riassunto in inglese

Mount Tokachi is an active volcano located in Daisetsuzan National Park, Hokkaidō, Japan. It is the tallest volcano of the Tokachi Volcanic Group, with a height of 2,077 metres (6,814 ft). It is one of the 100 famous mountains in Japan.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
2650 BCE~2456 BCE · 1 eruzioni · VEI max. ?1874 BCE~1680 BCE · 1 eruzioni · VEI max. ?1486 BCE~1293 BCE · 1 eruzioni · VEI max. 3129 BCE~65 · 1 eruzioni · VEI max. ?259~453 · 1 eruzioni · VEI max. ?453~647 · 1 eruzioni · VEI max. ?841~1034 · 1 eruzioni · VEI max. ?1034~1228 · 1 eruzioni · VEI max. ?1228~1422 · 1 eruzioni · VEI max. 31422~1616 · 1 eruzioni · VEI max. 21810~2004 · 18 eruzioni · VEI max. 32650 BCE1486 BCE323 BCE6471810

Cronologia dettagliata

  1. 2004VEI 1Osservata
    2004-02-25 – 2004-04-19
    1962-II Crater
  2. 1988VEI 2Osservata
    1988-12-10 – 1989-05-16
    1962 Crater
  3. 1985VEI 1Osservata
    1985-06-19 – 1985-06-22
    East wall of 1962 crater
  4. 1962VEI 3Osservata
    1962-06-29 – 1962-09-16
    South of Shin-funkako
  5. 1961VEI 1Osservata
    1961-08-14 – 1961-08-14
    NW of Kami-Horokamettoku-yama
  6. 1959VEI 1Osservata
    1959-08-15 – 1959-11-25
    NE of Shin-funkako (Showa Crater)
  7. 1958VEI 1Osservata
    1958-10-04 – 1958-10-04
    NE of Shin-funkako (Showa Crater)
  8. 1957VEI 1Stima geologica
    1957-08-20 – 1957-08-20
    NE of Shin-funkako (Showa Crater)
  9. 1956VEI 1Osservata
    1956-06-16 – 1956-06-16
    NE of Shin-funkako (Showa Crater)
  10. 1954VEI 1Osservata
    1954-09-16 – 1954-09-16
    NE of Shin-funkako (Showa Crater)
  11. 1952VEI ?Osservata
    1952-08-17 – In corso
    NE of Shin-funkako (Showa Crater)
  12. 1931VEI 1Osservata
    1931-05-16 – 1931-05-16
  13. 1928VEI 1Osservata
    1928-01 – 1928-05-23
    Shin-funkako
  14. 1928VEI 1Osservata
    1928-12-04 – 1928-12-25
    Shin-funkako
  15. 1925VEI 3Osservata
    1925-11-20 – 1927-09
    Shin-funkako
  16. 1889VEI 2Osservata
    1889 – In corso
    Maru-yama (Yunuma)
  17. 1887VEI 2Osservata
    1887-06 – In corso
    Lower part of Maru-yama?
  18. 1857VEI 2Osservata
    1857 – In corso
  19. 1570 (±100 anni)VEI 2Stima geologica
    1570 – In corso
    Maru-yama
  20. 1250VEI 3Stima geologica
    1250 – In corso
  21. 1050 (±200 anni)VEI ?Stima geologica
    1050 – In corso
  22. 950 (±50 anni)VEI ?Stima geologica
    950 – In corso
  23. 600 (±300 anni)VEI ?Stima geologica
    600 – In corso
  24. 350 (±100 anni)VEI ?Stima geologica
    350 – In corso
  25. 1 (±50 anni)VEI ?Stima geologica
    1 – In corso
  26. 1350 a.C.VEI 3Stima geologica
    BCE 1350 – In corso
    Ground Crater
  27. 1750 a.C. (±50 anni)VEI ?Stima geologica
    BCE 1750 – In corso
  28. 2650 a.C. (±200 anni)VEI ?Stima geologica
    BCE 2650 – In corso

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