GEOLOGY

Detailed explanation-1: -Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle. A region where this process occurs is known as a subduction zone, and its surface expression is known as an arc-trench complex.

Detailed explanation-2: -Ocean-Continent Convergence The oceanic plate is denser, so it undergoes subduction. This means that the oceanic plate sinks beneath the continent. This occurs at an ocean trench (Figure below). Subduction zones are where subduction takes place.

Detailed explanation-3: -Subduction occurs when an oceanic plate runs into a continental plate and slides beneath it.

Detailed explanation-4: -When a continental plate collides with an oceanic plate, the oceanic plate crust subducts beneath the continental crust due to its high density and its higher specific gravity, thus forming a subduction zone. In the subduction zone, the subducted plate melts, forming magma, then moving upwards, creating a volcano.