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Mount Nasu

Nasudake

Stratovulcano · Japan · 1915 m

A line of hikers at the lower left walk along a trail below the summit of Chausudake, the active cone of the Nasudake volcanic complex. This volcano group consists of a N-S-trending cluster of cones and lava domes at the N end of the Kanto Plain. Chausudake is a young cone that formed about 16,000 years ago. Six eruptions took place in 1408-1410 CE, when the youngest summit lava dome formed; additional smaller phreatic eruptions have occurred since then.
A line of hikers at the lower left walk along a trail below the summit of Chausudake, the active cone of the Nasudake volcanic complex. This volcano group consists of a N-S-trending cluster of cones and lava domes at the N end of the Kanto Plain. Chausudake is a young cone that formed about 16,000 years ago. Six eruptions took place in 1408-1410 CE, when the youngest summit lava dome formed; additional smaller phreatic eruptions have occurred since then. · Foto: Photo by Yukio Hayakawa, 1994 (Gunma University). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Japan
Regione
Northwestern Pacific Volcanic Regions / Northeast Japan Volcanic Arc
Altitudine
1915 m
Coordinate
37.125, 139.963
Ultima eruzione
1963
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The Nasudake volcanic group consists of a N-S-trending cluster of stratovolcanoes and lava domes at the north end of the Kanto Plain. Volcanic activity dates back about 500,000 years. Growth of three large basaltic-to-dacitic stratovolcanoes, each lasting about 200,000 years, was followed by construction of three smaller andesitic stratovolcanoes, Asahidake, Futamatayama, and Chausudake. Activity during the last 55,000 years included the collapse of Asahidake volcano about 30-40,000 years ago, producing the massive Ofujisan debris-avalanche deposit, which covers a broad area SE of the volcano. The youngest volcano, Chausudake, began forming about 16,000 years ago. Six magmatic eruptions took place since then, the latest in 1408-1410 CE, when the Chausudake summit lava dome formed. These eruptions produced block-and-ash flows and concluded with the extrusion of lava flows. Smaller phreatic eruptions have occurred every few hundred years during the past 5,000 years.

Sintesi da Wikipedia

Riassunto in inglese

Mount Nasu is a group of complex volcanoes located in the northeast part of Nikkō National Park, Japan. The tallest peak is Sanbonyari Peak at a height of 1,916.9 m (6,289 ft). Mount Nasu is one of the 100 Famous Japanese Mountains.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
8550 BCE~8200 BCE · 1 eruzioni · VEI max. 28200 BCE~7849 BCE · 1 eruzioni · VEI max. 36097 BCE~5747 BCE · 1 eruzioni · VEI max. 25747 BCE~5396 BCE · 1 eruzioni · VEI max. 34695 BCE~4345 BCE · 1 eruzioni · VEI max. 22242 BCE~1892 BCE · 1 eruzioni · VEI max. 21541 BCE~1191 BCE · 1 eruzioni · VEI max. 2840 BCE~490 BCE · 1 eruzioni · VEI max. 3490 BCE~140 BCE · 1 eruzioni · VEI max. 2211~561 · 2 eruzioni · VEI max. 31262~1613 · 4 eruzioni · VEI max. 31613~1963 · 6 eruzioni · VEI max. 18550 BCE6097 BCE3293 BCE840 BCE1613

Cronologia dettagliata

  1. 1963VEI 1Stima geologica
    1963-07-10 – 1963-07-11
    Chausu-dake
  2. 1963VEI 1Osservata
    1963-11-20 – 1963-11-21
    Chausu-dake (west side)
  3. 1960VEI 1Osservata
    1960-10-10 – In corso
    Chausu-dake (50 m north of 1953 vent)
  4. 1953VEI 1Osservata
    1953-10-24 – 1953-10-29
    Chausu-dake (1881 crater)
  5. 1881VEI 1Osservata
    1881-07-01 – In corso
    Chausu-dake (west and NW side of summit)
  6. 1846VEI 1Osservata
    1846-08 – In corso
    Chausu-dake
  7. 1410VEI 3Osservata
    1410-03-05 – In corso
    Chausu-dake
  8. 1408VEI 3Osservata
    1408-02-24 – In corso
    Chausu-dake
  9. 1404VEI 3Osservata
    1404-02-11 – In corso
    Chausu-dake
  10. 1397VEI 3Osservata
    1397-02-17 – In corso
    Chausu-dake
  11. 330 (±200 anni)VEI 2Stima geologica
    330 – In corso
    Chausu-dake
  12. 250 (±200 anni)VEI 3Stima geologica
    250 – In corso
    Chausu-dake
  13. 250 a.C.VEI 2Stima geologica
    BCE 250 – In corso
    Chausu-dake
  14. 700 a.C. (±200 anni)VEI 3Stima geologica
    BCE 700 – In corso
    Chausu-dake
  15. 1440 a.C. (±500 anni)VEI 2Stima geologica
    BCE 1440 – In corso
    Chausu-dake
  16. 2000 a.C. (±1450 anni)VEI 2Stima geologica
    BCE 2000 – In corso
    Chausu-dake
  17. 4350 a.C. (±950 anni)VEI 2Stima geologica
    BCE 4350 – In corso
    Chausu-dake
  18. 5550 a.C. (±500 anni)VEI 3Stima geologica
    BCE 5550 – In corso
    Chausu-dake
  19. 6050 a.C.VEI 2Stima geologica
    BCE 6050 – In corso
    Chausu-dake
  20. 7850 a.C.VEI 3Stima geologica
    BCE 7850 – In corso
    Chausu-dake
  21. 8550 a.C. (±1500 anni)VEI 2Stima geologica
    BCE 8550 – In corso
    Chausu-dake

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