Amerika Serikat · Stratovolkan
Yantarni Volcano
Yantarni
- Tipe
- Stratovolkan
- Ketinggian
- 1345 m
- Letusan terakhir
- -800
- Tipe
- Stratovolkan
- Negara
- Amerika Serikat
- Wilayah
- Amerika Utara / Alaska Peninsula Volcanic Arc
- Ketinggian
- 1345 m
- Koordinat
- 57.019, -157.185
- Letusan terakhir
- -800
- Kondisi tektonik
- Zona subduksi / Kerak benua (> 25 km)
- Bentuk lahan
- Komposit
- Batuan utama
- Andesit / Andesit basaltik
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.
Ringkasan Wikipedia
Ringkasan InggrisYantarni Volcano is an andesitic stratovolcano in the U.S. state of Alaska. It is on the Alaska Peninsula, in the Aleutian Range, between Mount Aniakchak and Mount Chiginagak volcanoes. The volcano was not discovered until 1979 due to its remote location, lack of documented historic activity, and its rather modest summit elevation. The mountain was named after nearby Yantarni Bay, which in turn was named by Russian explorers after the abundance of amber in the area.
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Riwayat letusan
1 tercatatGlosariumGaris waktu rinci
- 800 SM (±500 tahun)VEI 5Perkiraan geologi800 SM – akhir tidak diketahui
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