The movement of the plates creates three types of tectonic boundaries: convergent ... A single mid-ocean ridge system connects the world's oceans, making the ridge the longest mountain range ...
making it far too young to be useful for pinpointing when plate tectonics arose. Fissures along the ridge of two tectonic plates moving away from each other in Krafla, North-Eastern Iceland.
This volcanic arc delineates the boundary between the Pacific and North American tectonic plates. A subduction zone, composed of the deep Aleutian Trench coupled with a landward line of volcanoes ...