41.326 S, 72.614 W
summit elevation 2003 m
Calbuco volcano is located in southern Chile, 11 km south of Lake Languished, and 30 km NE of Puerto Mont. The volcano contains a 400-500 m wide summit crater. Avalanche deposits have reached Lake Llanquihue.
Calbuco and Puyehue volcanoes lie on the same fault and are known to erupt
within a few years of each other or together.
Calbuco Volcano - John Seach
Geology of Calbuco Volcano
The volcano has a truncated cone shape and consists mainly of blocky and aa lava flows interbedded with pyroclastic rocks.
Calbuco-1 outcrops in deep gullies and is the remnant of an ancient volcano that predates the last glaciation.
Calbuco-2 forms the main cone of Calbuco volcano, and consists of interbedded lavas and breccias. This includes a violent eruption that triggered a 3 cubic km rock-avalanche which traveled NNW.
Calbuco-3 occurred after the avalanche and consists of lava flows and a small dome, located on the northern flank of the volcano.
Calbuco-4 consists of a historic dome and associated lava flows, which developed during the eruptions of 1893-94, 1917, 1929 and 1961.
On 25th January 1961 Calbuco volcano began emitting columns of white clouds of water vapor. Series of earth tremors shook the windows of nearby houses. The eruption produced three lahars: (1) down the north flank to Lake Llanquihue, (2) down the south flank to Lake Chapo, (3) down the northeast flank to the Rio Petrohue. Lahars were was caused by eruption of lava and pyroclastic material melting of ice and snow. Explosive activity was noted from the beginning of the eruption. On 10th March a large explosion was heard 8 km away, and produced a mushroom shaped cloud which rose 3,000 meters above the cone. Bombs 3 meters in diameter were ejected 500 meters high.
One of the largest historical eruptions in southern Chile occurred at Calbuco volcano in 1893-1894.
1972, 1961, 1929, 1917, 1911-12, 1909, 1907, 1906, 1895, 1893-94.