Plate A is an oceanic plate, and Plate B is a continental plate. This classification is based on their thickness and density characteristics: Plate A (oceanic) is thinner and denser, while Plate B (continental) is thicker and less dense, causing it to float higher than the oceanic plate
. The reason for this classification is that oceanic plates are generally thinner and composed of denser material, which makes them subduct beneath the thicker, lighter continental plates when they collide
. This subduction process can lead to geological phenomena such as magma formation and mountain building on the continental plate.
