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deep-sea trench
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Cross-sectional diagram illustrating plate tectonics, showing oceanic and continental crust moving over the asthenosphere. It highlights divergent boundaries at oceanic ridges where crust forms, convergent boundaries at trenches with subduction zones where crust is destroyed, and a transform boundary with a fault. Features such as island arcs, rising magma, and hotspots are labeled. island arc Dive deep into the depths of the ocean. 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.
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deep-sea trench: References & Edit History

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Article History

Type Description Contributor Date
Added interactive. Nov 16, 2023
Add new Web site: Woods Hole Oceanographic Institution - Ocean Trenches. Jun 27, 2023
Add new Web site: National Geographic - Ocean trench. Jan 22, 2014
New material detailing how these structures are classified and formed added. Oct 08, 2009
Article revised and updated. Mar 26, 2008
Added new Web site: University of Delaware College of Marine and Earth Studies - Deep Sea. Dec 12, 2006
Added new Web site: Extreme Science - Deepest Place in the Ocean. Dec 12, 2006
Article added to new online database. Jul 20, 1998
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