Chile’s location is significant to its active landscape that is lined with volcanoes and mountains, both results of its parallel position with a convergent boundary.  The west coast of chile shares the border with the Ring of Fire and reveals a possible evolution for the Andes Mountain Range.  As the map above shows, the Andes in the Chile territory lie between two convergent boundaries (represented by two, thin, yellow lines) suggesting the way in which they were formed over time.  As the plates converge, the many volcanoes and the mountains themselves in the region are evidence of this process (The Red triangles representing volcanic eruptions and yellow circles representing as known earthquakes that have occurred).  Chile lies between the Nazca and South American Plates, where the Nazca plate is sliding under the South American Plate, creating the process of subduction.

 

          By observing the next picture below, one can predict that the phenomenon called  Graban has occurred, as a lake has formed in between a the section of the Andes mountain range.  There's a possibility that the mountain range sunk down and created a valley.  From this perspective, it can be seen as a divergent boundary, but this assumption may be flawed if Chile is in between two converging boundaries as a whole. 

 

 

References:

 

Siebert, L., Simkin, T., and Kimberly, P., 2010, Volcanoes of the World, 3rd ed. Berkeley: University of California Press, 568 p. http://www.volcano.si.edu/world/region.cfm?rnum=1507

Munoz PhD., Andres Moreira. "The Extravagant Physical Geography of Chile." Trans.     

 Array Plant and Vegetation:Plant Geography of Chile. vol. 5 Springer Netherlands, 2011. 3-45. Web. 31 Jan. 2013.

      http://www.globalchange.umich.edu/globalchange1/current/lectures/evolving_earth/evolving_earth.html

"World Tectonics." National Geographic: Atlas of the World. 1999.