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Report on Colima (Mexico) — 5 December-11 December 2001

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 5 December-11 December 2001
Managing Editor: Gari Mayberry

Please cite this report as:

Global Volcanism Program, 2001. Report on Colima (Mexico). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 5 December-11 December 2001. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (5 December-11 December 2001)


Colima

Mexico

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

All times are local (unless otherwise noted)


A flight over Colima on 5 December revealed that the spine on the lava dome, first observed on 31 October, was no longer visible. The 31 October dome in the inner crater had grown to an estimated volume of ~285,000 m3.

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.

Source: Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima