Answer:
A subduction zone is created when the two plates of heavier and lighter nature collide with each other and leads to the formation of volcanoes and island arcs.
Step-by-step explanation:
- The phenomenon takes place at the convergence boundaries of the two plates. Thus the fundamental process of subduction takes place. Mountain chains and volcanoes are a result of this process as the material os folded and faulted inside the earth layer of molten rock.
- Later on as a result, the newer crust gets formed by the presence of the lava that is upwelled from the mid-oceanic floor and the orogeny is which is a process of mountain building that has its origin in the same process as the mountains began to form due to the collision of plates.
- Thus crustal rocks are faulted and folded and the pace of mountain building can be traced by the radiometric datings of the igneous rocks. And the pace of convergence can be determined by the paleomagnetic evidence from the GPS.