How Volcanoes Formed Our Planet | How the Earth Was Made | History

Transcript

In the hunt to discover what form the Marianas Trench, scientists now know crust created at the ocean ridge is being devoured somewhere and by something in the Pacific Ocean. They suspect the Marianas Trench is involved. But the proof would come not from the trench but from these-- the Mariana Islands, a chain of volcanoes that break through the oc... Read More