Philippine Sea Plate
The east of the plate includes the Izu–Ogasawara (Bonin) and the Mariana Islands, forming the Izu–Bonin–Mariana Arc system. There is also a divergent boundary between the Philippine Sea Plate and the small Mariana Plate which carries the Mariana Islands. To the east, the Pacific Plate subducts beneath the Philippine Sea Plate at the Izu–Ogasawara Trench.