What tectonic plate is located west of a trench which reaches a maximum-known depth of 10994 m?
Mariana Trench The Mariana Trench or Marianas Trench is the deepest part of the world's oceans. It is located in the western Pacific Ocean, an average of 200 km to the east of the Mariana Islands, in the Western Pacific East of Philippines. It is a crescent-shaped scar in the Earth's crust, and measures about 2550 km long and 69 km wide on average. It reaches a maximum-known depth of 10994 m (± 40 m ) at a small slot-shaped valley in its floor known as the Challenger Deep, at its southern end, although some unrepeated measurements place the deepest portion at 11034 m . If Mount Everest were dropped into the trench at this point, its peak would still be over 1.6 km underwater. In 2009, Marianas Trench was established as a United States National Monument.
Cobb Seamount Cobb Seamount is a seamount (underwater volcano) and guyot located 500 km west of Gray's Harbor, Washington, United States. Cobb Seamount is one of the seamounts in the Cobb-Eickelberg Seamount chain, a chain of underwater volcanoes created by the Cobb hotspot that terminates near the coast of Alaska. It lies just west of the Cascadia subduction zone, and was discovered in 1950 by MV "John N. Cobb". By 1967, over 927 km of soundings and dozens of samples from the seamount had been collected.