大多数近代大陆架调查证明,表层沉积物形成及分布的基本规律是:由岸向海呈内细外粗“三带式“;中国近代大陆架也不例外。对其成因机理,前人做过大量的工作。本文试以南海大陆架北部近代沉积物沉积学研究为主,拟阐明“三带式“是海侵式沉积模式基本特征的观点,以便为古代海相碎屑岩地层研究提供“将今论古“的类比依据。 Most modern continental shelf surveys have proved that the basic law of the formation and distribution of surface sediments is the fine and coarse “three belts” in the sea from the sea to the sea; and the modern continental shelf in China is no exception. For its cause mechanism, predecessors have done a lot of work. In this paper, we mainly take the sedimentology research of the northern modern continental shelf in the South China Sea as the main part, and we intend to clarify the view that the “three belts” are the basic characteristics of the transgressive sedimentary model so as to provide " The analogy basis.