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冲绳海槽为活动大陆边缘沟—弧—盆体系的一个组成部分。海槽长1000多km里,槽底两头窄、中间宽,平均宽约95km。海槽西北与浅于150m的东海陆架相接,南东与水深200m的硫球海岭相连。海槽主体水深大于1000m,北浅南深,最深达2334m,属于典型的半深海沉积区。冲绳海槽沉积物与陆架沉积物不同的是出现大量的火山物质。中酸性火山岩广泛分布,
The Okinawa Trough is an integral part of the active continental margin ditch-arc-basin system. Trench more than 1000 km long, narrow at the bottom of both ends, the middle width, the average width of 95km. The northwest of the trough is connected to the East China Sea shelf shallow to 150m, and the south-east is connected to the sulfur sphere of 200m depth. The depth of the main body of the trough is more than 1000 m, deep in the south and shallow in the north, with the deepest reaching 2334 m, which belongs to the typical semi-deep sea sedimentary area. Unlike the sediments in the Okinawa Trough sediments, a large amount of volcanic material is present. Acidic volcanic rocks are widely distributed,