The Puyehue volcano erupted in which South American country in June 2011?
2011 Puyehue-Cordón Caulle eruption 2011 Puyehue-Cordón Caulle eruption The 2011 Puyehue-Cordón Caulle eruption () was a volcanic eruption that began in the Puyehue-Cordón Caulle volcanic complex in Chile on 4 June 2011. The eruption occurred from the Cordón Caulle fissure after 51 years of the volcano being inactive. At least 3,500 people were evacuated from nearby areas, while the ash cloud was blown across cities all around the Southern hemisphere, including Bariloche, Buenos Aires, Montevideo, Stanley, Porto Alegre, Cape Town, Hobart, Perth, Adelaide, Sydney, Melbourne, Wellington, Auckland and Port Moresby, forcing airlines to cancel hundreds of international and domestic flights and causing travel chaos.
Puyehue-Cordón Caulle activity continued with a small hiatus around 30,000 years ago until around 19,000 years ago when Puyehues started to produce lava domes and flows of dacitic to rhyolitic composition, a trend that lasted until 12,000 years before present. Between 15,000 and 12,000 years ago Puyehue also erupted basaltic andesite. During the Llanquihue glaciation Puyehue volcano produced some of the most primitive basalts of the Southern Volcanic Zone with a magnesium oxide mass percentage of 14.32, which is in equilibrium with melt from mantle peridotite. Only Puyehue and Cordón Caulle have erupted during the Holocene, and until 2011 only Cordón Caulle