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With the advent of Web 2.0, not only journalists report science to the public. Researchers should be aware of the implications for the public dissemination of their findings.
Mantle dynamics drive the formation of ocean islands and seamounts in the interior of oceanic plates. Yet the mechanisms for generating these volcanic edifices differ from chain to chain, and their material can be generated at a variety of depths.
The ocean floor is littered with hundreds of thousands of mostly extinct volcanoes. The origin of at least some of these seamounts seems to rest with mantle plumes.