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Láscar Volcano - John Seach
Chile
23.37 S, 67.73 W
summit elevation 5592 m
stratovolcano
Lascar Volcano is located in northern Chile. It is currently the most active volcano of the Central Volcanic Zone of the Andes.
Lascar has two cones - the Western Extinct Cone and the Eastern or Active Cone. Major pyroclastic eruptions the the past have failed to produce a caldera. Volcán Aguas Calientes is an older higher stratovolcano located 5 km east of Láscar.
2006-07 Eruptions
Eruptions began on 18th April 2006 and lasted 5 days. The first of four eruptions on the first day was visible from El Abra cooper mine 220 km NW of the volcano. An ash plume rose to 9.1 km altitude in May 2007.
2005 Eruption
A phreato-Vulcanian eruption occurred in May 2005. An eruption column on 4th May reached a height of 11 km. Very fine ash fell in the city of Salta, located 285 km SSE of the volcano.
1993 Eruption
A large eruption of Lascar volcano occurred in 1993 when pyroclastic flows reached 8.5 km from the summit. This was the largest historical eruption at Lascar. Several hours of vulcanian eruptions were followed by Plinian eruptions which generated pyroclastic flows and ash emissions. The tephra
plume extended SSE, covering more than 850,000 sq km
with, at least, 0.1 mm thick layer and reached North central
Argentina, Southern Paraguay, Uruguay, and Southern Brazil.
Lascar Volcano Eruptions
2006-07, 2005, 2002, 2000, 1994-95, 1994, 1993-94, 1993, 1991-92, 1990, 1990, 1987-89, 1986, 1984, 1974, 1972, 1969, 1959-68, 1954, 1951-52, 1940, 1933, 1902, 1898, 1883-85, 1875, 1858, 1854, 1853?, 1848.