This is a cross section of the Earth in the Southern Hemisphere. The map shows a subduction zone that has created the Peru-Chile Trench at the western edge of South America. This subduction zone has produced the Andes Mountains which run along the entire west coast of South America. It also shows you the Mid-Atlantic Ridge which is spreading the Atlantic Ocean making it wider and wider. The cross section shows two processes at work;
  1. "Old Crust" being destroyed at a subduction zone and
  2. "New Crust" being produced at the Mid-Atlantic Ridge.

Click on the "Next" button to learn about the deepest points on the crust of the Earth!!
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