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Over the Edge: Undersea Volcanic and Tectonic Activity
02:41

Over the Edge: Undersea Volcanic and Tectonic Activity

For large stretches the deep ocean basin is flat. But seamounts, guyots, island arcs and trenches, all of which result at least in part from tectonic
Subject: seamount
Transcript: comprising much of the deep-ocean basin. seamounts do much the same thing. Seamounts are generally volcanic edifices that either formed In association with

World in Motion: Seamounts, Guyots and Island Arcs
02:56

World in Motion: Seamounts, Guyots and Island Arcs

Seamounts, guyots and island arcs form on the ocean floor as a result of a hot spot or mantle plume. While seamounts do not extend above the ocean
Subject: seamount
Transcript: [narrator:] seamounts are essentially the same Mas volcanoes, except that they are inactive and do not extend above the surface. [kelley:] seamounts