本文通过对江苏岸外海底沙脊群的沉积物的粒度、矿物和孢粉以及沉积结构、构造的分析研究,并与苏北废黄河水下三角洲、古长江水下三角洲、现代长江水下三角洲以及长江三角洲平原第四纪地层的沉积物的对比分析,指出江苏岸外海底沙脊群的沉积物主要是晚更新世冰期古长江入海的物质。 Based on the analysis of sediment grain size, mineral and sporopollen, and sedimentary structure and structure of submarine sand ridges outside the bank of Jiangsu Province, this paper analyzes and compares with the subtropical Yellow River subaqueous delta, the ancient Yangtze River subaqueous delta, And the sediments of the Quaternary in the delta of the Yangtze River Delta. It is pointed out that the sediments of the offshore seafloor sandy ridges in Jiangsu are mainly those from the Late Pleistocene glacial paleosol.