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冲绳海槽系指中国东海大陆架以东、琉球群岛以西、对马海峡以南、我国台湾岛以北地区,从对马海峡以南起,以南西方向向钓鱼岛一带延伸,并于宫古群岛附近收敛,为一长约1200公里,宽约100公里的狭长地带,水深500米—2270米,是大陆坡中的深水海槽.1978年笔者在冲绳海槽采得样品,其中两个柱状样品为浮岩.A样位于129°E、29°30’N,B样位于127°45’E、
The Okinawa Trough refers to the east of the East China Sea shelf, to the west of the Ryukyu Islands, to the south of the Mashi Channel, to the area north of Taiwan Island of China, extending from the south of the Mashi Channel to the Diaoyu Island in the southwest direction and near Miyako Islands Convergence, a 1200 km long, 100 km wide strip, water depth of 500 meters -2270 meters, is the continental slope in the deep water trough.In 1978 the author of the Okinawa Trough to take samples, two of which are columnar samples Pumic rock .A-like at 129 ° E, 29 ° 30’N, B-like at 127 ° 45’E,