Central Pacific Basin

a basin in the Pacific Ocean, bounded by the Marshall Islands, the Ellice Islands, and the Gilbert Islands on the west and by the Line Islands Ridge on the east. Area, 5.7 million sq km; maximum depth, 6,957 m. The floor of the Central Pacific Basin is an abyssal plain. Isolated sea-mounts, such as Vitiaz’ Seamount (814 m), and seamount chains of volcanic origin, which include Titov Seamount, rise above the floor. The sediments are mainly red clay and radiolarian ooze.