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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 0.85°S
  • 78.9°W

  • 3914 m
    12838 ft

  • 352060
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Quilotoa.

 Available Weekly Reports

There are no Weekly Reports available for Quilotoa.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1797 Feb 4 ] [ Unknown ] Uncertain    
[ 1759 ] [ Unknown ] Uncertain 2  
[ 1740 Dec ] [ Unknown ] Uncertain 2  
[ 1725 ] [ Unknown ] Uncertain 2  
[ 1660 Nov 28 ] [ Unknown ] Discredited    
1280 (?) Unknown Confirmed 6 Radiocarbon (corrected)

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Di Muro A, Rosi M, Aguilera E, Barbieri R, Massa G, Mundula F, Pieri F, 2008. Transport and sedimentation dynamics of transitional explosive eruption columns: the example of the 800 BP Quilotoa plinian eruption (Ecuador). J Volc Geotherm Res, 174: 307-324.

Hall M L, 1977. El Volcanismo en El Ecuador. Quito: Biblioteca Ecuador, 120 p.

Hall M L, Mothes P A, 2008a. Quilotoa volcano--Ecuador: an overview of young dacitic volcanism in a lake-filled caldera. J Volc Geotherm Res, 176: 44-55.

Hantke G, Parodi I, 1966. Colombia, Ecuador and Peru. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 19: 1-73.

Mothes P A, Hall M L, 2008. The plinian fallout associated with Quilotoa's 800 yr BP eruption, Ecuadorian Andes. J Volc Geotherm Res, 176: 56-69.

Rosi M, Di Muro A, Aguilera E, 2006. Eruptive dynamics during the 800 yr BP Quilotoa eruption. IAVCEI Commission on Explosive Volcanism Field Workshop, Cities on Volcanoes 4, Quito, Ecuador 23-27 Jan, 2006, 30 p.

Rosi M, Landi P, Polacci M, Di Muro A, Zandomeneghi D, 2004. Role of conduit shear on ascent of the crystal-rich magma feeding the 800-year-B.P. Plinian eruption of Quilotoa volcano (Ecuador). Bull Volc, 66: 307-321.

Sapper K, 1917. Katalog der Geschichtlichen Vulkanausbruche. Strasbourg: Karl J Trubner, 358 p.

Quilotoa is a truncated, dacitic cone that is the westernmost of Ecuador's Andean volcanoes. It is located at the margin of the Western Cordillera, 35 km WNW of the city of Latacunga and contains a 3-km-wide caldera with steep-sided walls that rise 400 m above the surface of 240-m-deep caldera lake. More than a half dozen lava domes form an circular array along the caldera's perimeter. This small volcano has produced eight major explosive eruptions during the past 200,000 years. Its most recent major eruption about 800 radiocarbon years ago produced voluminous pyroclastic flows, lahars that reached the Pacific Ocean, and one of the largest airfall-tephra deposits of the northern Andes. Formation of the caldera was followed by extrusion of a small lava dome. Reports of historical eruptions from the caldera lake are somewhat ambiguous. Fumaroles are present on the lake floor and hot springs occur on the eastern flank.