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Jepang · Kubah lava

Nii-jima

Niijima

Tipe
Kubah lava
Ketinggian
432 m
Letusan terakhir
886
Nii-jima
Foto: っ at Japanese Wikipedia · CC BY-SA 3.0 · Wikimedia Commons
Tipe
Kubah lava
Negara
Jepang
Wilayah
Pasifik Barat Laut / Izu Volcanic Arc
Ketinggian
432 m
Koordinat
34.397, 139.270
Letusan terakhir
886
Kondisi tektonik
Zona subduksi / Kerak samudra (< 15 km)
Bentuk lahan
Kecil (silisik)
Batuan utama
Riolit
Ringkasan geologi

The elongated island of Niijima, SSW of Oshima, is 11 km long and only 2.5 km wide. Eight low rhyolitic lava domes are clustered in two groups at the northern and southern ends of the island, separated by an area of flat-topped domes and a low isthmus of pyroclastic deposits. The Mukaiyama complex on the south and the Atchiyama lava dome on the north were formed during eruptions in the 9th century CE, the last known activity. Shikineyama and Zinaito domes form small islands immediately to the SW and W, respectively, during earlier stages of volcanism. Earthquake swarms occurred during the 20th century.

Ringkasan Wikipedia

Ringkasan Inggris

Nii-jima (新島) is a volcanic Japanese island administered by the Tokyo Metropolitan Government. It is one of the Izu Seven Islands, group of the seven northern islands of the Izu archipelago, and is located approximately 163 kilometres (101 mi) south of Tōkyō and 36 kilometres (22 mi) south of Shimoda Shizuoka Prefecture. The island is the larger inhabited component of the village of Niijima Village, Ōshima Subprefecture of Tokyo Metropolis, which also contains the neighboring island of Shikine-jima and the smaller, uninhabited Jinai-tō. Nii-jima is also within the boundaries of the Fuji-Hakone-Izu National Park.

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Riwayat letusan

5 tercatatGlosarium
Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu · Gunakan tombol panah untuk berpindah batang, Enter untuk membuka
5950 SM~5722 SM · 1 letusan · VEI maks. ?4355 SM~4127 SM · 1 letusan · VEI maks. ?1393 SM~1165 SM · 1 letusan · VEI maks. ?658~886 · 2 letusan · VEI maks. 45950 SM4355 SM2532 SM937 SM658

Garis waktu rinci

  1. 886VEI 4Teramati
    886-06-29 – akhir tidak diketahui
    Mukai-yama
  2. 856VEI 2Teramati
    856 – 857
    Achi-yama
  3. 1250 SMVEI ?Perkiraan geologi
    1250 SM – akhir tidak diketahui
  4. 4350 SMVEI ?Perkiraan geologi
    4350 SM – akhir tidak diketahui
    Niijima-yama
  5. 5950 SMVEI ?Perkiraan geologi
    5950 SM – akhir tidak diketahui

Gunung api terdekat

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.