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seamount
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Diagram showing the transition from land to deep ocean, with labeled features including coastal plain, shoreline, continental shelf, continental slope, submarine canyon, seamounts, continental rise, and abyssal plain, illustrating the structure of the continental margin. Cross-sectional diagram showing three tectonic plates at ocean ridges, transform faults, and a subduction zone. The image illustrates rising magma forming rift and subduction volcanoes, convection currents in the mantle, and features such as ocean trenches, extinct and hot-spot volcanoes, and the movement of plates above a molten core and low-velocity mantle layer.

seamount: References & Edit History

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Invalidated site: Evolution of Hawaiian volcanoes. Jan 26, 2020
Added diagram of the continental margin. Sep 23, 2010
Added new Web site: NOAA - Ocean Explorer - Volcanic History of Seamounts in The Gulf of Alaska. Oct 20, 2008
Article added to new online database. Jul 20, 1998
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