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Volcanoes of southern Colombia: overflights, 15 February 2010 22 February 2010

Posted by admin in activity reports, Azufral, Cerro Negro (Colombia), Colombia, Cumbal, Galeras, volcano monitoring.
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Galeras volcano, 15 February 2010 (INGEOMINAS)
The summit of Galeras (image from 15 February 2010 INGEOMINAS overflight).

The INGEOMINAS volcanological observatory at Pasto has images from overflights carried out on 15 February 2010 over the volcanoes of southern Colombia: Galeras, Cumbal, Azufral and the Chiles-Cerro Negro complex (click on the name to access the images for each volcano).

Of these four, only Galeras is currently showing any signs of restlessness and is on alert level III, yellow (‘changes in the behaviour of the volcanic activity’). Cumbal and Azufral are both at alert level IV, green (‘volcano active and behaviour stable’), while Cerro Negro isn’t considered to need an alert level. Cumbal’s most recent eruptive activity was an explosive eruption in 1926, Azufral’s last known eruption was 1000 years ago, while Cerro Negro may have erupted in 1936, although this is unconfirmed.

Cerro Negro volcano, 15 February 2010 (INGEOMINAS)
Cerro Negro (image from 15 February 2010 INGEOMINAS overflight).

Cumbal volcano, 15 February 2010 (INGEOMINAS)
Summit of Cumbal volcano (image from 15 February 2010 INGEOMINAS overflight).

Azufral volcano, 15 February 2010 (INGEOMINAS)
Azufral volcano, showing Laguna Verde crater lake (image from 15 February 2010 INGEOMINAS overflight).

Global Volcanism Program: Azufral – information for Azufral (1501-09=)
Global Volcanism Program: Cerro Negro de Mayasquer – information for Cerro Negro de Mayasquer (1501-11=)
Global Volcanism Program: Cumbal – information for Cumbal (1501-10=)
Global Volcanism Program: Galeras – information for Galeras (1501-08=)

The Volcanism Blog

Nicaraguan volcanoes and life on Mars 29 September 2008

Posted by admin in Cerro Negro, current research, Mars, Nicaragua, solar system.
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‘Although volcanoes on Mars today are dormant or extinct’, says the summary of this Astrobiology Magazine story, ‘in the distant past the Red Planet was literally a hotbed of volcanic activity’. Yes, literally a hotbed. ‘Cerro Negro, an active volcano in Nicaragua, offers clues to what the martian era of fire and brimstone may have been like – and what types of organisms could have lived in that superheated world’.

It seems Cerro Negro, the youngest volcano in Central America (born April 1850), offers Martian-type basalts that can provide terrestrial analogs to possible conditions in and around the volcanoes of Mars back in the ‘martian era of fire and brimstone’. To find out more, take a look at ‘Nicaraguan volcano provides insight into early Mars’ at Astrobio.net.

The Volcanism Blog