NavidadLonquimay Volcano, Chile

Dylan Rothenberg and Caelin WeissDepartment of Geology, Colby College

http://www.karin-michael.net/Home/Blog/Entries/2013/4/14_Helmut_+_Adela_+_Volcanos.html

Location

• Araucanía region of Chile, in Parque Nacional Nalcas.

• Latitude- 38.377°S. Longitude- 71.58°W.

• Caused by the subduction of the oceanic Nazca plate beneath the South American plate.

• Earthquake and seismic activity.

https://feww.wordpress.com/2010/09/28/nazca-plate-subduction-probably-accelerating/

http://shleyfergeog2012.blogspot.com/

http://commons.wikimedia.org/wiki/File:Lonquimay.png

http://www.belupress.com/en/carte2.html

• Navidad is a cone located on the stratovolcano Lonquimay.

• Summit of 2,865 meters.• 5 volcanic sequences of

the Lonquimay volcano.• Navidad is a pyroclastic,

asymmetrical cone.• It now sits about 210

meters high and 700 meters in diameter at the base. http://flickrhivemind.net/Tags/lonquimay,nalcas/Interesting

Forms and Dimensions

http://www.mountain-forecast.com/peaks/Lonquimay

The Navidad Eruption

• Began on December 25, 1988 following weeks of seismic activity.

• Stombolian eruptions (the first in 100 years!).

• Gas emissions, Strombolian eruptions, magmatic degassing, lava flows, vent-clearing emissions.

• Ended on January 25, 1990.

http://enlonquimay.com/2013/12/25/volcan-lonquimay-erupcion/

Hazards and Contributions

• Fatal gas emissions.• Far-reaching ashfall impact.• Loss of economically

valuable livestock and forests.

• Seismic activity and ashfall- collapse of buildings and infrastructure.

• Volcano as a tourist attraction.

http://flickrhivemind.net/Tags/lonquimay,volcan/Interesting

Basaltic Andesite

Andesite

Dacite

Volcanic Deposits

Rock Types• Sedimentary and Igenous• Calc-Alkaline Rocks are common.

Navidad Today

• There are ski slopes nearby• No mining at Navidad• Geothermal energy is utilized in

Chile

• Consistently monitored• Allows scientists to understand the birth of a

volcano (similar to Surtsey)

Monitoring Navidad

• http://earthquake.usgs.gov/hazards/products/foreign/• http://www.volcano.si.edu/volcano.cfm?vn=357100• http://www.extremescience.com/plate-boundaries.htm• http://www.volcano.si.edu/volcano.cfm?vn=357100&vtab=Bulletin• http://www.volcanolive.com/lonquimay.html• http://enlonquimay.com/2013/12/25/volcan-lonquimay-erupcion/• http://www.volcanodiscovery.com/lonquimay-eruptions.html#er196• http://ludens.cl/andin/lonqui/lonqui.html• http://www.volcanolive.com/lonquimay.html• http://www.iavcei.org/documents/pucon04/c2.pdf• http://www.volcano.si.edu/volcano.cfm?vn=357100• http://www.summitpost.org/volc-n-lonquimay/815349

Bibliography