1979年,中国科学院南海海洋研究所实验轮在南海东北部进行了系统采样,本文利用x射线衍射分析、差热分析、红外光谱分析和电子显微镜照相,对其中48个样品的<2微米粘粒进行了研究。初步确定了区内粘土矿物的组合类型和分布特征,并对其成因和物质来源也作了初步探讨。 In 1979, the experimental round of the South China Sea Institute of Oceanology, Chinese Academy of Sciences conducted systematic sampling in the northeastern South China Sea. In this paper, X-ray diffraction analysis, differential thermal analysis, infrared spectroscopy and electron microscopy were used in this paper. Were studied. The types and distribution characteristics of clay minerals in the area were preliminarily determined, and their origin and source of matter were also discussed.