Santa Ana Volcano

Infobox Mountain
Name= Santa Ana Volcano
Photo= Santa Ana Volcano.USAF.C-130.3.jpg
Caption= Close up aerial view of the nested summit calderas and craters, along with the crater lake
Elevation= convert|2381|m|ft|0
Range= Cordillera de Apaneca
Location= El Salvador
Prominence =
Coordinates = coord|13.853|N|89.630|W|type:mountain|format=dms|display=inline,title
Topographic

Type= Stratovolcano
Age=
Last eruption= 2005
First ascent =
Easiest route= The Santa Ana Volcano or Ilamatepec (Spanish: "volcán de Santa Ana)" is a large stratovolcano located in the Santa Ana department of El Salvador. At 2,381 metres above sea level, it is the highest volcano in the country. It is located immediately west of Coatepeque Caldera.

The summit of Santa Ana features four nested calderas and volcanic craters, with the innermost containing a small crater lake. Collapse of the summit during the late Pleistocene (inferring from underlying soil samples, the upper age limit is no more than 57 000 years ago) produced a massive debris avalanche that reached the Pacific Ocean, forming the Acajutla Peninsula. Subsequent eruptions have largely rebuilt the edifice. There have been numerous historical eruptions since the 1500s, both at the summit and from cinder cones on the lower flanks. Such flank eruptions created the volcanoes Izalco and Cerro Verde (both parasitic volcanoes) and also the flank vents of San Marcelino located east of Santa Ana. The San Marcelino vents erupted in 1722 and flowed eastwards for 11km, destroying the village of San Juan Tecpan.

In October, 2005, the volcano erupted, killing at least two people, injuring seven people, forcing many people to flee their villages. The volcano spat rocks for over 1.5km (1 mile)with rocks the size of cars. The most recent previous eruption had been in 1904.

ee also

*List of volcanoes in El Salvador
*List of stratovolcanoes

References

* [http://www.volcano.si.edu/world/volcano.cfm?vnum=1403-02= Global Volcanism Program: Santa Ana]

* Sheets P D, 2004. Apocalypse then: social science approaches to volcanism, people, and cultures in the Zapotitan Valley, El Salvador. Rose W. I., Bommer J. J., Lopez D. L., Carr M. J., Major J. J. (eds), Natural Hazards in El Salvador. Bolder, Colorado, Geological Society of America Special Paper 375, pp 109-120.

* Siebert, L. Kimberly, P., and Pullinger, C.R, 2004, The voluminous Acajulta deris avalanche from Santa Ana Volcano, western El Salvador, and comparison with other Central American edifice-failure evens, in Rose, W.I. et al, Natural Hazards in El Salvador. Boulder, Colorado, Geological Society of America Special Paper 375, pp 5-23.

External links

* [http://news.bbc.co.uk/2/hi/americas/4301612.stm BBC news article on recent eruption]
* [http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17054 Nasa Earth Observatory article and image] .