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  • Understanding Subduction: The Process of Oceanic Plate Convergence
    The process of thrusting oceanic lithosphere into the mantle along a convergent plate boundary is called subduction.

    Here's a breakdown:

    * Subduction is the geological process where one tectonic plate moves under another.

    * Oceanic lithosphere is the denser, older part of the Earth's crust that forms the ocean floor.

    * Convergent plate boundaries are where two tectonic plates collide.

    When oceanic lithosphere collides with another plate (either oceanic or continental), the denser oceanic plate will bend and slide beneath the other plate. This process, called subduction, leads to the formation of:

    * Volcanoes: The subducted plate melts as it goes deeper into the mantle, creating magma that rises to the surface.

    * Trench: The bend in the overriding plate creates a deep depression in the ocean floor called a trench.

    * Earthquakes: Friction between the plates generates earthquakes.

    Subduction zones are incredibly important in shaping the Earth's surface and driving plate tectonics.

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