Volcano Live
volcanolive.com
Quilotoa Volcano | John Seach
Ecuador
0.85 S, 78.90 W
summit elevation 3914 m
caldera
Quilotoa volcano is located about 80 km SSW of Quito. The volcano contains a 3 km wide caldera with steep walls which rise 400 m above the surface of a 250 m deep lake.
The eruption of Quilotoa Volcano in 1280 was one of the largest eruptions in the world in the past 1000 years. It has large explosive eruptions every 10,000-14,000 years.
The eruption of Quilotoa volcano in 1280 came after 14,000 years of dormancy. A Plinian eruption discharged ~11 cubic km of magma during four eruptive phases. The eruption ended with the formation of a small caldera and the extrusion of a small lava dome.
The origin of magma that produced the different pumice types at Quilotoa volcano is within the volcanic conduit, and not in the magma chamber as previously supposed for other large-scale explosive eruptions. Magma was produced by viscous heating and crystal grinding of the original white magma in a region close to
the conduit walls.
Further reading
Hall, M.L. and Mothes, P.A., 2008. Quilotoa volcano—Ecuador: An overview of young dacitic volcanism in a lake-filled caldera. Journal of Volcanology and Geothermal Research, 176(1), pp.44-55.
Gunkel, G., et al. "Hazards of volcanic lakes: analysis of Lakes Quilotoa and Cuicocha, Ecuador." Advances in Geosciences 14 (2008): 29-33.
Quilotoa Volcano Eruptions
1797?, 1759?, 1740?, 1725?, 1150