What tectonic plate is located west of a trench which reaches a maximum-known depth of 10994 m?
Mariana Plate The Mariana Plate is a small tectonic plate located west of the Mariana Trench and forms the basement of the Mariana Islands. It is separated from the Philippine Sea Plate by a long divergent boundary with numerous transform fault offsets. The boundary between the Mariana and the Pacific Plate to the east is a subduction zone with the Pacific Plate subducting beneath the Mariana. The Mariana Trench forms the southeastern boundary and the Izu-Ogasawara Trench the northeastern boundary.
West Scotia Basin The West Scotia Basin is a submarine basin in the South Atlantic Ocean, near its border with the Southern Ocean. The basin is found southeast of Tierra del Fuego, south of the Falkland Islands, and northeast of the Antarctic Peninsula. It forms the western portion of the Scotia Plate.