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Report on Colima (Mexico) — April 1983

Scientific Event Alert Network Bulletin, vol. 8, no. 4 (April 1983)
Managing Editor: Lindsay McClelland.

Colima (Mexico) Vapor emission from fumarole field; SO2 flux estimated

Please cite this report as:

Global Volcanism Program, 1983. Report on Colima (Mexico). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 8:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198304-341040.

Volcano Profile |  Complete Bulletin


Colima

Mexico

19.514°N, 103.62°W; summit elev. 3850 m

All times are local (unless otherwise noted)


"Colima was emitting a moderate-sized white plume when observed 25-28 April. Most of the plume came from the fumarole field on the NW side of the summit lava field. Temperatures were as high as 565°C in some instances. Preliminary estimates of SO2 flux suggest a rate of up to 100 t/d."

Geologic Background. The Colima volcanic complex is the most prominent volcanic center of the western Mexican Volcanic Belt. It consists of two southward-younging volcanoes, Nevado de Colima (the 4320 m high point of the complex) on the north and the 3850-m-high historically active Volcán de Colima at the south. A group of cinder cones of late-Pleistocene age is located on the floor of the Colima graben west and east of the Colima complex. Volcán de Colima (also known as Volcán Fuego) is a youthful stratovolcano constructed within a 5-km-wide caldera, breached to the south, that has been the source of large debris avalanches. Major slope failures have occurred repeatedly from both the Nevado and Colima cones, and have produced a thick apron of debris-avalanche deposits on three sides of the complex. Frequent historical eruptions date back to the 16th century. Occasional major explosive eruptions (most recently in 1913) have destroyed the summit and left a deep, steep-sided crater that was slowly refilled and then overtopped by lava dome growth.

Information Contacts: R. Stoiber, L. Benton, C. Connor, D. Douglass, D. Shumway, and J. Swarts, Dartmouth College.