Volcano news: Colima Volcano (Mexico)
Colima volcano (Mexico): large explosion on Friday, 5 km eruption column
samedi nov. 22, 2014 08:42 | AUTEUR : T
Eruption column from yesterday's explosion at Colima (photo: Mario Anguiano M. / @gobernador_mam / twitter)A strong explosion occurred yesterday afternoon, producing a 5 km tall ash plume.
Ash fall occurred in up to 25 km distance in the municipalities of Zapotiltic and Tamazula de Gordiano.
The vulcanian-type eruption was likely the result of accumulated gas/magma pressure that ejected a solid plug blocking the vent.
dimanche, sept. 21, 2014
The volcano's activity has picked up again recently. A new viscous lava flow has started to descend on the volcano's SW flank. lire toutes
samedi, sept. 06, 2014
jeudi, avril 10, 2014
Weak explosive and effusive activity continues at the slowly growing viscous lava dome of the volcano. Occasionally, explosions and/or small rockfalls from the dome produce incandescent avalanches that reach 1-2 km distance on the steep slope. ... lire toutes
jeudi, mars 20, 2014
The volcano produced a series of small ash puffs last night (23:00 GMT). VAAC Washington alerted of low ash plumes beneath flight level 150 (15,000 ft / 4.5 km altitude) drifting east from the volcano. ... lire toutes
mardi, mars 11, 2014
Colima volcano (Western Mexico) activity update: extrusion of lava flow from summit, intermittent explosions
Mild effusive and explosive activity continue at the volcano. A recent overflight made by the Civil Protection's fire fighting department of Jalisco (UEPCBJ) showed no significant changes in the summit area of the volcano. A flat mass of viscous lava is slowly extruding and overspilling on the western and southern sides of the upper cone, causing incandescent avalanches sometimes visible at night. Intermittent explosions with ash emission also continue to occur. ... lire toutes
Background:Colima volcano is one of the most active in North America and one of the potentially most dangerous ones. It has had more than 30 periods of eruptions since 1585, including several significant eruptions in the late 1990s. Scientific monitoring of the volcano began 20 years ago.
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 probable 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: GVP, Smithsonian Institute - Colima information