对南海中部5个沉积岩芯的粘土矿物做了定性分析和半定量估算。提出南海粘土矿物组合特征为陆架浅海型与大洋型间的过渡型,这一特征表明,南海沉积物以多源性为特征。研究指出,南海沉积岩芯中粘土矿物含量高低呈现出周期性的旋回变化,并且有可对比性,控制这种变化的主要因素是沉积过程中古气候冷暖的周期性旋回变化及其所影响的沉积环境的变化。 Clay minerals from five sedimentary cores in central South China Sea were qualitatively and semi-quantitatively evaluated. It is proposed that the assemblage of clay minerals in the South China Sea is a transitional type between shallow sea and oceanic shelf. This feature indicates that the sediments in the South China Sea are characterized by multi-source. It is pointed out that the content of clay minerals in the sedimentary core of the South China Sea shows periodic gyration changes and is comparable. The main factor controlling this change is the cyclonic warming of the paleoclimate during deposition and the sedimentary environment The change.