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海槽表层沉积物沉积特征的研究结果表明,冲绳海槽沉积物具有大陆和大洋之间的过渡性质,大陆及大陆架物质在近期地质历史中,始终是海槽沉积物的主要物质来源;海槽区粗粒沉积物是陆架粗粒沉积物的延续,其性质与陆架区的相似,属于再沉积形成的沉积物;沉积物中的火山物质是区分陆架和海槽沉积物的主要标志之一。
The sedimentary characteristics of the trough surface sediments show that the Okinawa Trough sediments have the transitional nature between the continent and the ocean. The continental and continental shelf materials have always been the main material source of the trough sediments in the recent geological history. The coarse-grained sediments in the area are a continuation of the coarse sediments in the continental shelf. Their properties are similar to those in the shelf area and belong to the sediments formed by redeposition. Volcanic material in the sediments is one of the main symbols that distinguish the sediments in the shelf and the trough.