在长江、南流江、钱塘江河口地区的现场观测表明,涨潮流是使沉积物溯河搬运的主要动力,而有孔虫和铁皂石则分别代表溯河搬运的“轻”、重矿物。这种海相微体化石和海相自生矿物不仅见于河口地区,而且出现在全新世沉积层中。沉积物溯河搬运的研究进一步说明了长江三角洲地区海进河床充填层序的形成和解释了全新世太湖地区的某些海侵沉积问题。 In situ observations in the Yangtze River, Nanliu River, and Qiantang River Estuaries show that the tidal current is the main driving force for sediment transport upstream, while the foraminifera and saponite represent the “light”, heavy minerals . The marine microflora and marine authigenic minerals are found not only in estuaries but also in Holocene sediments. The study of sediment upstream transport further illustrates the formation of the seafloor bed filling sequence in the Yangtze River Delta and explains some transgressive sedimentation problems in the Taihu Lake area in the Holocene.