对崇明岛CY孔样芯磁性特征的研究表明 ,该孔沉积物的磁性矿物以假单畴 /多畴晶粒的亚铁磁性矿物为主。按磁化率等磁参数的变化可将该孔划分为 7个磁性层。同时 ,参照沉积物粒度、化学分析结果 ,探讨了磁参数与沉积动力环境、地球化学环境的关系 ,并以磁性层位划分与岩性岩相分析、14 C测年相结合 ,建立了长江河口中全新世以来的沉积相序和地层层序。 The study on the magnetic characteristics of the pore-cored core in Chongming Island shows that the magnetic minerals in the pore sediments are dominated by ferrimagnetic minerals of pseudo-monomodal / multi-domain grains. According to the magnetic susceptibility and other magnetic parameters can change the hole is divided into seven magnetic layer. At the same time, with reference to sediment particle size and chemical analysis results, the relationship between magnetic parameters and sedimentary dynamic environment and geochemical environment was discussed. Based on the analysis of lithofacies and lithofacies facies analysis and 14 C dating, Sedimentary Facies and Stratigraphic Sequence Since Mid Holocene.