The study of a total of six drilling holes located in N-S direction in Jiangdu area, Jiangsu Province reveals that there occurred braided fluvial sediments in the Zhenjiang (Dagang)-Jiangdu segment of the Yangtze River, deposited during late Late Pleistocene including Marine Isotope Stage (MIS)3. In the last glacial maximum, the global sea level dropped dramaticly, and an incised-river channel was formed in Zhenjiang-Jiangdu area. The post-glacial transgression caused by sea level rise led to the channel filling and the formation of the sequence from the river channel to floodplain, estuary and deltaic facies in a succession upwards. Yellow gravelly sand deposited in early post-glacial stage was distributed extensively in the channel, and may be used as a marker.