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In this photo released by the civil defense unit of the state government of Jalisco, the eruption plume from the initial stage of the powerful vulcanian explosion at Colima volcano on May 23, 2005, has been captured on film. The collapsing eruption column loaded with ash and rock fragments has not yet fully developed, but the flanks of the volcano are already covered by the impacts of ballistics. (AP Photo/Proteccion Civil del estado de Jalisco-HO)
In this photo released by the civil defense unit of the state government of Jalisco, the eruption plume from the initial stage of the powerful vulcanian explosion at Colima volcano on May 23, 2005, has been captured on film. The collapsing eruption column loaded with ash and rock fragments has not yet fully developed, but the flanks of the volcano are already covered by the impacts of ballistics. (AP Photo/Proteccion Civil del estado de Jalisco-HO)


Colima vulkaan
Stratovulkaan 3850 m / 12,631 ft
Western Mexico, 19.51°N / -103.62°W
Current status: restless (2 out of 5)
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Colima vulkaanuitbarstingen:
1519, 1560, 1576, 1585, 1590, 1602(?), 1606, 1611-1613, 1622, 1690, 1711, 1743(?), 1744, 1749(?),1769, 1770, 1771, 1780, 1794, 1795, 1804, 1806-1809, 1818, 1819, 1866, 1869, 1870-71, 1872-73, 1874, 1875-78, 1879-80, 1880-81, 1882-84, 1885-1886, 1887, 1889-90, 1890, 1891-92, 1893-1902, 1903, 1904-1906, 1908-09, 1913, 1926-1931(?), 1941(?), 1957-1960, 1961-62, 1963-70, 1973(?), 1975-76, 1977-1982, 1983(?), 1985-86, 1987, 1988(?), 1991, 1994, 1997-2011, 2013-ongoing
Typical eruption style:
Dominant explosieve. Bouw van lavakoepels en vulkanische uitbarstingen van Stromboli activiteit. In in de buurt van constante activiteit sinds 1994.
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Volcano news: Colima Volcano (Mexico)

Colima volcano (Mexico): intensity of eruption decreases, frequent small explosions

Tuesday Oct 18, 2016 09:00 AM | DOOR: T

Small explosion at Colima this morning
Small explosion at Colima this morning
The lava flow front of Colima's recent lava flow (image: University of Colima)
The lava flow front of Colima's recent lava flow (image: University of Colima)
Activity at the volcano continues but its intensity has decreased over the past week. Lava effusion into the viscous lava flow on the southern side continues (if at all) at very low rate, manifesting itself by occasional rockfalls from the thick lava flow front.
Explosions of small to moderate size at the summit vent are relatively frequent, probably destroying the recently emplaced dome.
Members of Colima University recently sampled the lava flow in order to investigate its chemical properties which might give a clue to explain the recent effusive phase of the volcano which came very suddenly and was very fast. In particular, it would be interesting to see if the new lava is different from the lavas of July last year or if it also is relatively rich in dissolved water (that help explain the fast rise of the magma column).
Vorig nieuws

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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