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Colima volcano (Mexico) - Smithsonian / USGS Weekly Volcanic Activity Report for 22 February-28 February 2017 (Continuing Activity)

Wed, 22 Feb 2017, 06:00
06:00 AM | BY: VN
On 24 February the Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima reported low-intensity explosions at Colima during the previous week. The internal crater remained about 250 m in diameter and 50-60 m deep; previous lava domes had been destroyed in late September and mid-November 2016. Scientists who visited the terminus of a 4.5-km-long pyroclastic flow that had been emplaced on 8 January observed that the flow was blocky with very little ash, and that the local vegetation had not been burnt, suggesting that the flow was low-temperature.
The Unidad Estatal de Protección Civil de Colima noted that the public should not enter the 8-km-radius exclusion zone, and also stay away from ravines.

Sources: Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima, Unidad Estatal de Protección Civil de Colima
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From: Global Volcanism Program, 2017. Report on Colima. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 22 February-28 February 2017. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 15 Feb 2017, 06:00
Colima volcano (Mexico) - Smithsonian / USGS Weekly Volcanic Activity Report for 15 February-21 February 2017 (Continuing Activity)
Based on Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima observations, the Unidad Estatal de Protección Civil de Colima reported that during 10-16 February there were 10 low-intensity explosions at Colima. Gas emissions were at low-to-moderate levels. The report noted that the public should not enter the 8-km-radius exclusion zone. ... Read all
Tue, 14 Feb 2017, 05:45
Colima volcano Volcanic Ash Advisory: NEW VA EMS
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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.
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Source: GVP, Smithsonian Institute - Colima information
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