Answer: Subduction
Subduction refers to the process by which, in convergent boundaries of tectonic plates, one plate moves under another one, forcing it to sink into the mantle. This process can involve both oceanic crust and continental crust, and the regions where this process occurs are known as subduction zones. These areas tend to have a high rate of volcanism and earthquakes. It can also lead to mountain building and collisional thickening.
