This paper describe the phase analysis to subaqueous sediment middle reachesof Tumen River,and pretiminary exploraory to the cause of its formation.

• 文章对图们江中游水域水底堆积物进行了物相分析，对其成因做了初步探讨，结果表明，该堆积物主要为砂质和部分磁铁矿，粘土矿物较少。