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基于南黄海600多个表层沉积物样品的研究和对前人大量沉积学资料及水文学资料的分析,阐述了南黄海现代沉积环境和动力沉积体系特征,对存在广泛争议的泥质沉积物形成机制进行了探讨南黄海陆架可分为弱动力(低能)沉积环境和强动力(高能)环境,低能沉积环境进一步划分为气旋型和反气旋型涡旋两种环境;高能环境则分为高能沉积环境和高能侵蚀环境.陆架低能环境发育了泥质沉积体系.在南黄海中部,受海域中尺度气旋型涡旋(冷涡)的控制,发育了冷涡泥质沉积体系,而在南黄海东南部受反气旋型涡旋(暖涡)控制则形成了反气旋型涡旋泥质沉积体系(暖涡沉积).二者在粒度、沉积速率、沉积厚度和矿物学特征上有明显区别,陆架高能沉积环境发育了砂质沉积,集中分布在南黄海的西部、南部及东北部海区,在高能侵蚀环境区分布着大量砂岩砾石.高能沉积环境中原有的细粒物质(黏土、细粉砂等)逐渐被悬浮、搬运至低能区沉积,还建立了气旋型涡旋和反气旋型涡旋泥质沉积作用模式,对南黄海泥质沉积体系的成因给出了系统的解释.
Based on the study of more than 600 surface sediment samples from the South Yellow Sea and the analysis of a large number of sedimentology and hydrological data of the former Yellow Sea, the characteristics of the modern sedimentary environment and dynamic sedimentary system in the southern Yellow Sea are expounded. Mechanism of the South China Sea shelf can be divided into weak dynamic (low energy) depositional environment and strong dynamic (high energy) environment, low-energy sedimentary environment is further divided into cyclonic and anti-cyclonic vortex environment; high-energy environment is divided into high energy deposition Environment and high-energy erosion environment.The shale sedimentary system was developed in the low-energy environment of the shelf.In the central part of the South Yellow Sea, controlled by the mesoscale cyclone vortex (cold vortex) in the sea, the cold-eddy argillaceous sedimentary system was developed, while in the southeast of the South Yellow Sea The anti-cyclonic vortex (warm vortex) control forms an anti-cyclonic vortex sedimentary system (warm vortex deposition), which shows obvious differences in grain size, sedimentation rate, sedimentary thickness and mineralogical characteristics, Sandy sediments are developed in the environment, concentrated in the western, southern and northeastern parts of the South Yellow Sea, where a large amount of sandstone gravel is distributed in high-energy erosion environments. In high-energy sedimentary environments Some fine-grained materials (clay, fine silt, etc.) are gradually suspended and transported to the low-energy area for deposition, and a swirling vortex and anti-cyclone argillaceous sedimentary model is established. Genesis gives a systematic explanation.