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Mount Haku

Hakusan

Stratovolcano · Japan · 2702m

Hakusan, seen here from the WNW, contains multiple vents along a roughly N-S line. Holocene eruptions have consisted of phreatic or phreatomagmatic explosions from several summit craters. Partial collapse of the summit produced a debris avalanche down the E flank. Eruptions were recorded over almost a thousand-year period until the 17th century.
Hakusan, seen here from the WNW, contains multiple vents along a roughly N-S line. Holocene eruptions have consisted of phreatic or phreatomagmatic explosions from several summit craters. Partial collapse of the summit produced a debris avalanche down the E flank. Eruptions were recorded over almost a thousand-year period until the 17th century. · Photo: Photo by Ishikawa Prefecture, 1994 (courtesy Toshio Higashino, Haku-san Nature Conservation Center). · Wikimedia Commons
Type
Stratovolcano
Country
Japan
Region
Western Pacific / Nankai Volcanic Arc
Elevation
2702m
Coordinates
36.155, 136.771
Last eruption
1659
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

Hakusan is a complex andesitic-dacitic stratovolcano near the western coast of central Honshu. It was constructed over a high basement of sedimentary rocks in a region of very heavy snowfall that has contributed to erosional dissection. Holocene eruptions have consisted of phreatic or phreatomagmatic explosions from several summit craters. Partial collapse of the summit produced a debris avalanche down the E flank during the mid-Holocene. Eruptions were recorded over almost a thousand-year period until the 17th century.

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
7550 BCE~7243 BCE · 1 eruptions · max VEI ?7243 BCE~6936 BCE · 1 eruptions · max VEI ?6629 BCE~6322 BCE · 1 eruptions · max VEI ?5094 BCE~4787 BCE · 1 eruptions · max VEI ?4173 BCE~3866 BCE · 1 eruptions · max VEI ?3559 BCE~3252 BCE · 1 eruptions · max VEI ?2639 BCE~2332 BCE · 1 eruptions · max VEI ?490 BCE~183 BCE · 1 eruptions · max VEI 4124~431 · 1 eruptions · max VEI ?431~738 · 2 eruptions · max VEI ?738~1045 · 5 eruptions · max VEI 31045~1352 · 2 eruptions · max VEI 31352~1659 · 7 eruptions · max VEI 37550 BCE5401 BCE2945 BCE797 BCE1352

Detailed timeline

  1. 1659VEI 2Observed
    1659-04-21 – 1659-08-08
    Midoriga-ike
  2. 1658VEI 2Observed
    1658-10 – Ongoing
  3. 1582VEI 2Observed
    1582 – Ongoing
  4. 1579VEI 3Observed
    1579-09-27 – Ongoing
    Jigoku-no-oana
  5. 1554VEI 3Observed
    1554-05 – 1556
    SW of Midoriga-ike
  6. 1548VEI 3Observed
    1548 – Ongoing
  7. 1547VEI 3Observed
    1547-03-04 – 1547-10
  8. 1239VEI 3Observed
    1239 – Ongoing
  9. 1177VEI 3Geological estimate
    1177-05-18 – Ongoing
  10. 1042VEI 3Observed
    1042 – Ongoing
    Midoriga-ike
  11. 900VEI ?Geological estimate
    900 – Ongoing
  12. 884VEI ?Geological estimate
    884 – Ongoing
  13. 859VEI ?Geological estimate
    859 – Ongoing
  14. 853VEI ?Geological estimate
    853 – Ongoing
  15. 706VEI ?Observed
    706-09 – Ongoing
  16. 500 (±100 yrs)VEI ?Geological estimate
    500 – Ongoing
  17. 200VEI ?Geological estimate
    200 – Ongoing
  18. 200 BCEVEI 4Geological estimate
    BCE 200 – Ongoing
    Kengamine
  19. 2550 BCE (±150 yrs)VEI ?Geological estimate
    BCE 2550 – Ongoing
  20. 3550 BCE (±500 yrs)VEI ?Geological estimate
    BCE 3550 – Ongoing
  21. 3900 BCE (±200 yrs)VEI ?Geological estimate
    BCE 3900 – Ongoing
  22. 5000 BCEVEI ?Geological estimate
    BCE 5000 – Ongoing
  23. 6550 BCE (±50 yrs)VEI ?Geological estimate
    BCE 6550 – Ongoing
  24. 7050 BCE (±500 yrs)VEI ?Geological estimate
    BCE 7050 – Ongoing
  25. 7550 BCE (±50 yrs)VEI ?Geological estimate
    BCE 7550 – Ongoing

External links

⚠ For reference only. Not for emergency response.