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Random pictures

Quilotoa volcano eruptions

caldera 3914 m / 12,841 ft
Ecuador, -0.85°S / -78.9°W
Eruption list: 1797(?), 1759(?), 1740(?), 1725(?), around 1280 AD


1280 Plinian eruption and caldera formation of Quilotoa volcano
One of the largest known eruptions on earth during the past 1000 years occurred around the year 1280 (radiocarbon dated). It followed a dormancy period of 14,000 years. The eruption emptied ca. 11 cubic km of magma during 4 eruptive phases. The first phase produced one of the northern Andes' largest air-fall pumice and ash layer. The following phases generated large pyroclastic flows and lahars, which reached the Pacific Ocean.
The eruption was followed by the formation of the caldera and ended with the emplacement of a small lava dome.
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Source:
Patricia A. Mothes, Minard L. Hall (2008) "The plinian fallout associated with Quilotoa's 800 yr BP eruption, Ecuadorian Andes", Journal of Volcanology and Geothermal Research, Volume 176, Issue 1, 10 September 2008, Pages 56-69

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