Where are the Andes Mountains?
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Where are the Andes?

The Andes

About 199 million years ago, near the beginning of the Jurassic period, in the time of the dinosaurs, the supercontinent of Pangaea broke up and the pieces began to float away from each other. The Pacific Ocean tectonic plate began to squeeze under the South America plate, pushing up the Andes mountains that now run all along the west side of South America.


The Andes mountains are far older than the Alps, the Rockies, or the Himalayas. They're the oldest high mountains in the world, though they are newer than the Appalachian mountains or the Ural mountains.

The Andes were the original home of llamas and wild tomatoes and potatoes, among other things.

Learn by Doing - Graph the height of mountain chains
More about the Rocky Mountains

Bibliography and further reading about the Andes:

More about plate tectonics
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Professor Carr

Karen Eva Carr, PhD.
Assoc. Professor Emerita, History
Portland State University

Professor Carr holds a B.A. with high honors from Cornell University in classics and archaeology, and her M.A. and PhD. from the University of Michigan in Classical Art and Archaeology. She has excavated in Scotland, Cyprus, Greece, Israel, and Tunisia, and she has been teaching history to university students for a very long time.

Professor Carr's PSU page

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