When did the Andes mountains form

When did the Andes mountains form Bristol, UK (SPX) Nov 25, 2015 - The Andes have been a mountain chain for much longer than previously thought, new research from the University of Bristol, UK suggests. The Andes were formed by tectonic activity whereby earth is uplifted as one plate (oceanic crust) subducts under another plate (continental crust). To get such a high mountain chain in a subduction zone setting is unusual which adds to the importance of tr ... more

---