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Antuco volcanostratovolcano 2979 m / 9,774 ft
Central Chile and Argentina, South America, -37.41°S / -71.35°W Current status: dormant (1 out of 5) [hide map] [enlarge map]
Typical eruption style: explosive
Antuco volcano eruptions: 1869, 1863, 1862, 1861, 1852-53, 1848, 1845, 1839, 1828, 1820, 1806, 1752, 1750 Last earthquakes nearby:
Background:The formation of Antuco volcano followed the older stratovolcanoes of the basaltic-to-andesitic Sierra Veluda and Cerro Condor.Antuco volcano itself of two units, separated by a caldera collapse, and are referred to as Antuco I and Antuco II, and a flank cone. Antuco I grew until about 10,000 years ago to form a 10 km diameter stratovolcano. Its end was marked by a large sector collapse, producing a large debris avalanche which traveled down the Río Laja to the west and left a large 5-km-wide horseshoe-shaped caldera breached to the west. Afterwards, new activity built a new cone, now rising over 1000 m, inside the caldera, Antuco II, and a parasitic cone on the NE flank of the Antuco I. |
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