Transition Zone (Geology)

In geology, the transition zone refers to a specific region within the Earth's mantle, approximately between 410 and 660 kilometers deep. This zone marks the boundary where minerals undergo structural changes due to high pressure and temperature, affecting seismic wave behavior. The transition zone plays a key role in Earth's mantle convection and the movement of tectonic plates. It acts as a dynamic boundary, influencing how heat and material transfer between the upper and lower mantle, ultimately impacting geological processes like volcanic activity and continental drift.