Yantarni

sopka – Stratovolcano, United States, North America Volcanic Regions

Kde

United States, North America Volcanic Regions

Typ (GVP)

Stratovolcano

Nadmořská výška

1 345 m

Tektonické prostředí

Subduction zone / Continental crust (> 25 km)

Poslední známá erupce

800 př. n. l.

Poloha

57,019°, -157,185°

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.

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.