Okinawa Trough

 ( Geology Of China ) 

The Okinawa Torafu (also called , literally "China-Ryukyu Border Trough") is a seabed feature of the East China Sea. It is an active, initial back-arc rifting basin which has formed behind the Ryukyu arc-trench system in the West Pacific. It developed where the Philippine Sea Plate is subducting under the Eurasia Plate.Thakur, Naresh Kumar et al. (2010).

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Description It is a back-arc basin formed by extension within the continental lithosphere behind the far deeper Ryukyu Trench-arc system.Sibuet, Jean-Claude et al. "Back arc extension in the Okinawa Trough," Journal of Geophysical Research, Vol. 92, Issue B13, p. 14041-14063. The thickness of the crust in the northern Okinawa Trough is 30 km, thinning to 10 km in the southern Okinawa Trough.

(2013). 9781461518433 ISBN 9781461518433

It has a large section more than deep and a maximum depth of .

The Okinawa Trough still in an early stage of evolving from arc type to back-arc activity, and features volcanoes such as the Yonaguni Knoll IV.

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Implications for the China–Japan maritime boundary

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Interpretations The existence of the Okinawa Trough complicates descriptive issues in the East China Sea.Ji, Guoxing. (1995). "Maritime Jurisdiction in the Three China Seas," p. 10. UC Berkeley: UC Institute on Global Conflict and Cooperation; retrieved 15 Nov 2010. According to Professor Ji Guoxing of the Asia-Pacific Department at Shanghai Institute for International Studies,

• China's interpretation of the geography is that
• Japan's interpretation of the geography is that

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Legal procedure On August 15, 2013, China's mission did a presentation to the Commission on the Limits of the Continental Shelf (CLCS) established under the United Nations Convention on the Law of the Sea (UNCLOS). The presentation was on the proposal that demarcates the limits of the outer continental shelf beyond 200 nautical mile in part of the East China Sea. China states that China's continental shelf in the East China Sea extends to China-Ryukyu Border Trough naturally, which has been over 200 away from the mainland baseline of Chinese territorial waters. According to UNCLOS, any country claiming continental shelves beyond 200 nautical shall provide relevant scientific evidence to CLCS. To collect solid data, China deployed 14 scientific survey ships, covering an area of 250,000 square kilometers.

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Notes

• Taylor, Brian. (1995). Backarc Basins: Tectonics and Magmatism. New York: Plenum Press. ; OCLC 32464941
• Thakur, Naresh Kumar and Sanjeev Rajput. (2010). Exploration of Gas Hydrates: Geophysical Techniques. Berlin: Springer Verlag. ; OCLC 646113755

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