07°04.1′N 176°49.5′W / 7.0683°N 176.8250°W / 7.0683; -176.8250[1]Magellan Rise is an oceanic plateau in the Pacific Ocean,[1] which covers a surface area of 500,000 square kilometres (190,000 sq mi).
[3] The Magellan Rise has been called a large igneous province[a] by Coffin and Endholm 2001[5] and was emplaced 145 million[4] or 135-128 million years ago, possibly as a consequence of intense volcanism at a former triple junction.
[6] Alternatively, the Rise was formed by a mantle plume[7] linked to the deep "JASON superplume".
[10] The volume of rocks in the Magellan Rise is very uncertain, but may be in the range of 1,800,000 cubic kilometres (430,000 cu mi)[2] to 19,740,000 cubic kilometres (4,740,000 cu mi).
[12] The Magellan Rise has never risen to shallow depths, at least since the Cretaceous, and it is covered by sediments of Tithonian/Berriasian to Quaternary age.