The Ryukyu arc (琉球弧 Ryūkyū-ko) is a volcanic island arc system of Japan's triple junction formed by the subduction of the Philippine Sea Plate beneath the Eurasian Plate between Ryukyu Trench to the south-east and the Okinawa Trough to north-west. It comprises the entirety of the Ryukyu Islands chain. The Ryukyu and Southwest Honshu arcs together form the southwest trending arm of the Boso Triple Junction.
- "Nature in Okinawa" (PDF). 沖繩縣. Retrieved 2012-09-30.
- "Nature in Okinawa"(Okinawa prefecture Japan) (in Japanese) (in English)
- "台灣北部大地構造"(中華民國國立自然科學博物館) (in Chinese)
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