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Mount Tokachi

Tokachidake

Stratovolcano · Japan · 2077m

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. · Photo: Photo courtesy of Japan Meteorological Agency, 1988. · Wikimedia Commons
Type
Stratovolcano
Country
Japan
Region
Northwestern Pacific Volcanic Regions / Kuril Volcanic Arc
Elevation
2077m
Coordinates
43.418, 142.686
Last eruption
2004
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

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.

From Wikipedia

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.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
2650 BCE~2456 BCE · 1 eruptions · max VEI ?1874 BCE~1680 BCE · 1 eruptions · max VEI ?1486 BCE~1293 BCE · 1 eruptions · max VEI 3129 BCE~65 · 1 eruptions · max VEI ?259~453 · 1 eruptions · max VEI ?453~647 · 1 eruptions · max VEI ?841~1034 · 1 eruptions · max VEI ?1034~1228 · 1 eruptions · max VEI ?1228~1422 · 1 eruptions · max VEI 31422~1616 · 1 eruptions · max VEI 21810~2004 · 18 eruptions · max VEI 32650 BCE1486 BCE323 BCE6471810

Detailed timeline

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

External links

⚠ For reference only. Not for emergency response.