The Mariana Plate is a tectonic plate located in the western Pacific Ocean. It is named after the Mariana Islands, which are situated above it. This plate is known for containing the Mariana Trench, the deepest part of the world's oceans, reaching depths of about 36,000 feet (10,973 meters). The Mariana Plate is primarily an oceanic plate, meaning it is composed of dense basaltic crust. It is bordered by several other tectonic plates, including the Philippine Sea Plate and the Caroline Plate. The interactions between these plates can lead to geological phenomena such as earthquakes and volcanic activity.