Plate tectonics are odd because they often consist of oceanic and continental crust. For example, the Pacific Plate underlies the Pacific Ocean with the Hawaiian Islands positioned smack dab in the middle.
The Pacific Plate stretches all the way along the west coast of North America up to Alaska. At the western edge, it reaches all the way to the east coast of the islands of Japan and Indonesia.
This plate forms a large portion of the Pacific Ring of Fire. This horse-shoe looking pattern of plate tectonics has some of the most catastrophic earthquakes and volcanoes on Earth.
On average, the Pacific Plate moves at a rate of 5 to 10 centimeters per year. However, the Pacific Plate, Cocos Plate, Nazca Plate, and Antarctic Plate move more than 10 centimeters which is the fastest movement rate of all plate tectonics.
Pacific Plate Tectonic Boundary Types
The Pacific Plate contains all the plate tectonic boundary types along its boundary. In other words, it shares convergent, divergent, and transform borders with other plates.
Already mentioned, the Pacific Ring of Fire has the most active chains of volcanoes in the world. This is because tectonic plates collide and sink at these zones of subduction (convergent plate boundaries).
Lastly, the San Andreas fault is between the North American Plate and Pacific Plate are transform plate boundaries. While the North American plate in the east moves in the southwest direction, the Pacific plate in the west moves northwest.
The Hawaiian Islands are positioned at the center of the Pacific Plate. But it’s an interior hot spot within the Pacific Plate that is responsible for the volcanic activity that occurs here.