Thursday, April 7, 2011

Highest Capital City in the World

Now I've arrived in La Paz, Bolivia, the highest capital in the world.  From the window of my hotel, I can see a long mountain range stretching from one horizon to the other--the Andes.  An amazingly long range of mountains that lines the whole coast of South America, it is a volcanic arc. It was formed the same way as the Cascades and Mt. Rainier--one plate (Nazca Plate) moved under another (South America Plate) and heated up, turning into magma and then emerging as a volcanic arc.  My view from La Paz (16 30'S, 68 09'W) shows the Andes Mountain Range.  It is a Convergent Subduction Boundary, with many active volcanoes.  Minor to major earthquakes occur to this day, along with volcanic eruptions.
Andes Mountain Range
http://upload.wikimedia.org/wikipedia/commons/2/2f/Aerial_photo_of_the_Andes.jpg

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