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Latest news from Galeras volcano

Friday, May 30, 2014
Activity at the volcano is currently low. ... [more]
Ash emission from Galeras volcano on 29 Jan 2014 (INGEOMINAS)
Saturday, Feb 01, 2014
Weak ash emissions were observed on 29 Jan. [more]

Galeras volcano

complex stratovolcano 4276 m / 14,029 ft
Colombia, 1.22°N / -77.37°W
Current status: restless (2 out of 5)
Galeras webcams / live data
Last update: 30 May 2014
Typical eruption style: explosive
Galeras volcano eruptions: 1535, 1580, 1616, 1641-43, 1670-1736, 1754-56, 1796-1801, 1823, 1828-34, 1834, 1836(?), 1865-70, 1889, 1891, 1923, 1924-27, 1930, 1932, 1933(?), 1936, 1947, 1950, 1973(?), 1974-83, Feb-May 1989, Jan 1990 - July 1992, Jan-June 1993, Mar-May 2000, June 2002, July 2004 - Feb 2005, Nov 2005 - July2006, Oct 2007 - Jan 2008, Oct 2008 - 2010 No recent earthquakes
TimeMag. / DepthDistanceLocation
Galeras is one of Colombia's most active volcanoes. In an eruption in 1993, it killed a group of scientists and tourists who had been inside its crater when it erupted.

Background:

Galeras is one of Colombia's most frequently active volcanoes. The dominantly andesitic volcano has been active for more than 1 million years, and two major caldera collapse eruptions took place during the past 100,000 years. Several collapse events have produced debris avalanches that swept to the west and left a large horseshoe-shaped caldera inside which the modern cone has been constructed.
Major explosive eruptions in the past thousands of years have produced widespread tephra deposits and pyroclastic flows that swept all but the southern flanks. A central cone slightly lower than the caldera rim has been the site of numerous small-to-moderate historical eruptions since the time of the Spanish conquistadors.

The fatal eruption in 1993
Galeras became active again in 1988 after 10 years of dormancy. It became infamous when it erupted on 14 January 1993, killing six volcanologists and three tourists who were inside the crater when it exploded. The group was part of an scientific conference excursion and their final decision to enter the crater, pushed forth by team leader Stanley Williams (who miracoulously survived), was and still is highly debated: the fatal decision was made despite the observation of a significantly increased number of particular earthquakes (tornillos), which had preceded previous eruptions and also started to occur in the days before the eruption.


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