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Mount Takahara

Takaharayama

Stratovolcano · Japan · 1795m

The Fujisan lava dome is the youngest eruption product of Takaharayama volcano. This small complex with associated lava domes is located SW of Nasudake volcano. An eruption took place about 6,500 years ago, when phreatic explosions along a NW-SE- trend were followed by emplacement of the Fujisan lava dome.
The Fujisan lava dome is the youngest eruption product of Takaharayama volcano. This small complex with associated lava domes is located SW of Nasudake volcano. An eruption took place about 6,500 years ago, when phreatic explosions along a NW-SE- trend were followed by emplacement of the Fujisan lava dome. · Photo: Photo by Ichio Moriya (Kanazawa University). · Wikimedia Commons
Type
Stratovolcano
Country
Japan
Region
Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
Elevation
1795m
Coordinates
36.900, 139.777
Last eruption
-4570
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

Takaharayama is a small stratovolcano with lava domes located SW of Nasudake volcano and NNW of Utsunomiya city in central Honshu. The basaltic-to-dacitic volcano lies within the Shiobara caldera, which was formed during the late Pleistocene at the time of the eruption of the Otawara pumice-flow deposit. The latest dated eruption of Takahara took place about 6500 years ago along the NW-SE-trending Yumoto-Shiobara fissure system within the caldera. Eruptions along this fissure initially produced the phreatic Takahara-Uenohara tephra deposit, which was distributed primarily to the east. The symmetrical Fujiyama lava dome, one of many conical volcanoes named after Japan's renowned Mount Fuji, was extruded at the end of the eruption.

From Wikipedia

Mount Takahara is a stratovolcano in Tochigi Prefecture, Japan. It comprises three volcanic cones, Myojindake, Maekuroyama and Shakagadake, situated within the Shiobara caldera. The caldera-forming eruption occurred in the late Pleistocene. The tallest volcano in the group, Shakagatake, contains four more peaks. Volcanic activity at the present location occurred between 500,000 and 10,000 years ago, and ceased until about 6,500 years ago when a fissure eruption occurred on its northern part. It produced the Takahara-Uenohara tephra deposit, and by the end of the eruption, had formed the Fujiyama lava dome. No eruptions have occurred since, but the volcano has fumaroles and two earthquake swarms occurred during the late 1970s and early 1980s.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
4570 BCE~4570 BCE · 1 eruptions · max VEI 44570 BCE4570 BCE4569 BCE4569 BCE4569 BCE

Detailed timeline

  1. 4570 BCEVEI 4Geological estimate
    BCE 4570 – Ongoing
    Fuji-san lava dome

External links

⚠ For reference only. Not for emergency response.