Plate tectonics is a complex process involving continental drift, subduction, and earthquakes. The movement of tectonic plates is ongoing, with some areas, such as the Cascadia Subduction zone, continuing to be active, while others may be experiencing changes in their movement. The long-term effects of plate tectonics are still being studied, with some research suggesting that the process will eventually come to a halt, although the timing and consequences of this are not yet clear.