The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into one another; divergent ... also occur where a plate of ocean dives, in a process called ...

New crust is continually being pushed away from divergent boundaries ... plate bending downward into the Earth. Deep below the Earth's surface, subduction causes partial melting of both the ocean ...

A new study looking at four plateaus in the western Pacific Ocean ... plate upward. Underwater, though, submarine mountains usually form as two plates drift apart at a so-called divergent boundary ...