Mid- or intra-plate earthquakes are those that occur within the boundaries of the major crustal plates. Most (over 90%) earthquakes occur along the tectonically active plate boundaries, where the major crustal plates are moving past and/or away from...

An interplate earthquake is an earthquake that occurs at the boundary between two tectonic plates. If one plate is trying to move past the other, they will be locked until sufficient stress builds up to cause the plates to slip relative to each other....