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Mount Yōtei

Yoteizan

Stratovolkan · Japan · 1898 m

Yoteizan volcano, seen here from the NW, has deep radial valleys and a large crater at the summit with several smaller craters along the NW rim.
Yoteizan volcano, seen here from the NW, has deep radial valleys and a large crater at the summit with several smaller craters along the NW rim. · Foto: Photo by Ichiyo Moriya (Kanazawa University). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Japan
Wilayah
Pasifik Barat Laut / Northeast Japan Volcanic Arc
Ketinggian
1898 m
Koordinat
42.827, 140.811
Letusan terakhir
-1050
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Yoteizan is a symmetrical andesitic-to-dacitic stratovolcano NW of Toya caldera. Its summit is truncated by a 700-m-wide crater that is cut on its NW rim by overlapping smaller craters. Deep radial gullies cut the flanks. The latest eruption from the main edifice took place about 5,000-6,000 years ago. Hangetsu-ko (Half Moon Lake), a tuff cone on the lower NW flank, was estimated from stratigraphic evidence to have erupted about 3,000 years ago.

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
3550 BCE~3358 BCE · 1 letusan · VEI maks. ?1242 BCE~1050 BCE · 1 letusan · VEI maks. ?3550 BCE2973 BCE2396 BCE1819 BCE1242 BCE

Garis waktu rinci

  1. 1050 SMVEI ?Perkiraan geologi
    BCE 1050 – Berlangsung
    NW flank (Hangetsu-ko)
  2. 3550 SMVEI ?Perkiraan geologi
    BCE 3550 – Berlangsung

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.