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Mount Nikkō-Shirane

Nikko-Shiranesan

Shield volcano · Japan · 2578m

Nikko-Shiranesan is a relatively small volcano consisting of a group of four lava domes in Nikko National Park. An E-W-trending fissure is visible across the summit lava dome, seen here from Mae-Shirane, E of the summit. Eruptions from the 17th to 19th centuries CE consisted of phreatic explosions from Shiranesan, the youngest lava dome.
Nikko-Shiranesan is a relatively small volcano consisting of a group of four lava domes in Nikko National Park. An E-W-trending fissure is visible across the summit lava dome, seen here from Mae-Shirane, E of the summit. Eruptions from the 17th to 19th centuries CE consisted of phreatic explosions from Shiranesan, the youngest lava dome. · Photo: Photo by Lee Siebert, 1964 (Smithsonian Institution). · Wikimedia Commons
Type
Shield volcano
Country
Japan
Region
Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
Elevation
2578m
Coordinates
36.799, 139.376
Last eruption
1952
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Shield
Major rock type
Andesite / Basaltic Andesite
Geological summary

Nikko-Shiranesan is a relatively small, 2578-m-high andesitic volcano consisting of a group of four lava domes resting on a shield volcano that rises to the NW of scenic Lake Chuzenji in Nikko National Park. All historical eruptions, recorded during the 17th-20th centuries, have consisted of phreatic explosions from Shiranesan, the youngest lava dome. Viscous lava flows with prominent levees from the underlying shield volcano Keizukayama were responsible for the formation of several scenic lakes north of the volcano.

From Wikipedia

Mount Nikkō-Shirane is a stratovolcano in the Nikkō National Park in central Honshū, the main island of Japan. It stands at 2,578 m high. It is the highest mountain in north eastern Japan. Its peak is a Lava dome of andesite. Mt Nikkō-Shirane is listed in the 100 famous mountains in Japan proposed by Kyuya Fukada and also of one of the famous mountains of Tochigi and Gunma prefectures respectively.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
4150 BCE~3947 BCE · 1 eruptions · max VEI ?2116 BCE~1913 BCE · 1 eruptions · max VEI ?489 BCE~285 BCE · 1 eruptions · max VEI ?732~935 · 1 eruptions · max VEI ?1545~1749 · 2 eruptions · max VEI 31749~1952 · 6 eruptions · max VEI 24150 BCE2726 BCE1099 BCE3251749

Detailed timeline

  1. 1952VEI 2Observed
    1952-07-16 – 1952-09-16
    Shirane-san
  2. 1890VEI 1Observed
    1890-08-22 – Ongoing
    Shirane-san
  3. 1889VEI 1Observed
    1889-12-04 – Ongoing
    Shirane-san (west flank)
  4. 1873VEI 1Observed
    1873-03-12 – Ongoing
    Shirane-san
  5. 1872VEI 2Observed
    1872-05-14 – Ongoing
    Shirane-san (SW flank)
  6. 1871VEI ?Geological estimate
    1871-04 – Ongoing
    Shirane-san
  7. 1649VEI 2Observed
    1649-02 – Ongoing
    Shirane-san
  8. 1625VEI 3Observed
    1625 – Ongoing
    Shirane-san
  9. 800VEI ?Geological estimate
    800 – Ongoing
  10. 400 BCEVEI ?Geological estimate
    BCE 400 – Ongoing
  11. 2000 BCEVEI ?Geological estimate
    BCE 2000 – Ongoing
  12. 4150 BCE (±200 yrs)VEI ?Geological estimate
    BCE 4150 – Ongoing

External links

⚠ For reference only. Not for emergency response.