West Philippine Sea, South China Sea refers to portions of the eastern South China Sea that are adjacent to and west of the Philippine archipelago. The term West Philippine Sea was formally adopted by the Philippine government in 2012 to denote maritime areas within the Philippines’ exclusive economic zone and continental shelf, including waters around the Kalayaan Island Group and Scarborough Shoal. Earlier scientific literature and many international sources continue to refer to these waters simply as part of the South China Sea, and older locality attributions may use different naming conventions.

Geologically, this area forms part of the eastern margin of the South China Sea basin and includes a transition from oceanic crust in the deeper central basin to thinned continental crust and complex island arc systems toward the Philippine Mobile Belt. The region is influenced by interactions between the Eurasian Plate, the Philippine Sea Plate, and associated microplates, resulting in a tectonically active setting characterised by faulting, subsidence, volcanism, and seismicity. Submarine plateaus, seamounts, reef complexes, and deep basins are prominent geomorphological features.

From a mineralogical and geological perspective, the West Philippine Sea is of interest for submarine mineralisation associated with seamounts and volcanic structures, including ferromanganese crusts and nodules enriched in manganese, iron, cobalt, nickel, and copper. Hydrothermal activity related to volcanic and tectonic processes has been documented in parts of the broader region, with mineralogical data derived primarily from marine surveys, dredging, and remotely operated sampling rather than in situ collecting.

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Wikipedia:	https://en.wikipedia.org/wiki/West_Philippine_Sea

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