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利用沉析法和筛析法及显微镜等方法，对1988年以来采自南黄海表层和浅孔样品进行粒度、矿物及生物组合等多种分析，应用沉积物的粒度参数来判别沉积环境。研究结果表明，南黄海陆架的沉积环境十分复杂，在其中部，有一个低能量的沉积动力活动区，它的各种属性都与南黄海冷水团密切相关。这一低能沉积环境，形成了浅海粉砂质粘土相沉积，该沉积物主要由细粒物质组成，平均粒径为8．5Φ；粘土组分的含量＞70％：含海相沟鞭藻和双壳类等生物，并含有丰富的自生黄铁矿。这些特征表明，浅海粉砂质粘土相是南黄海陆架沉积模式的重要部分，是浅海陆架沉积环境研究领域不可忽视的对象。
Sediment and sieve analysis and microscopy were used to analyze the grain size, mineralogical and biological assemblages collected from surface and shallow pores of the South Yellow Sea since 1988, and the grain size parameters of sediment were used to determine the sedimentary environment. The results show that the depositional environment of the South Yellow Sea shelf is very complicated. There is a low-energy sedimentary dynamic activity zone in the central part of the SCS. Its properties are closely related to the cold water mass in the southern Yellow Sea. This low-energy sedimentary environment formed a shallow-sea silty clay-phase sediment that consisted mainly of fine-grained material with an average particle size of 8.5Φ and a clay component content of> 70% Bivalves and other organisms, and contains abundant authigenic pyrite. These characteristics indicate that the shallow marine silty clay is an important part of the South Yellow Sea shelf sedimentary model and an indispensable object in the research field of shallow shelf sedimentary environment.