Draft:Palau-Kyushu Ridge

The Palau-Kyushu Ridge, also known as the Kyushu-Palau Ridge (KPR), is a massive undersea mountain range located in the Philippine Sea, stretching approximately 2,600 kilometers long in a north-south direction. It's named after the two landmasses it flanks: the Japanese island of Kyushu to the north and the Micronesian island nation of Palau to the south.

Geological features
From the view of geomorphologic features, the KPR is a discontinuous seamount chain (chain-shaped seamounts) and subduction beneath the Japanese Island arc at the Nankai Trough which is the natural boundary between the basin and the Japanese Island arc. At the positions of 25°N, 24°N, 23°N and 18°N, obvious discontinuity is shown, which belongs to natural topographic discontinuity.