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Yantarni Volcano

Yantarni

Stratovolkan · United States · 1345 m

Yantarni is located on the Alaska Peninsula, with this view from the east showing the lava dome at the summit. On either side of the dome are remnants of a large crater that opens to the NE, which formed during flank collapse about 2,000-3,500 years ago.
Yantarni is located on the Alaska Peninsula, with this view from the east showing the lava dome at the summit. On either side of the dome are remnants of a large crater that opens to the NE, which formed during flank collapse about 2,000-3,500 years ago. · Foto: Photo by Tom Miller, 1985 (Alaska Volcano Observatory, U.S. Geological Survey). · Wikimedia Commons
Tipe
Stratovolkan
Negara
United States
Wilayah
Amerika Utara / Alaska Peninsula Volcanic Arc
Ketinggian
1345 m
Koordinat
57.019, -157.185
Letusan terakhir
-800
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Yantarni is a small andesitic stratovolcano located between Aniakchak caldera and Chiginadak volcanoes that was not discovered until 1979. A large breached crater on the NE side, formed by collapse of the summit about 2000-3500 years ago, contains a lava dome that marks the summit. This eruption, which resembled that of Mount St. Helens in 1980, began with a debris avalanche produced by the edifice collapse that was accompanied by a possible lateral blast and followed by the emplacement of 1 km3 of pyroclastic flows related to growth of the summit lava dome.

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
800 BCE~800 BCE · 1 letusan · VEI maks. 5800 BCE800 BCE799 BCE799 BCE799 BCE

Garis waktu rinci

  1. 800 SM (±500 tahun)VEI 5Perkiraan geologi
    BCE 800 – Berlangsung

Tautan eksternal

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