Abstract
The sources of clay minerals in surface sediments of the Philippine Sea are not only from the mainland of China, the Philippine islands, and the Japanese islands bu t also from other volcanic arcs and the ridge basalt. Broadly speaking the distribution of clay minerals in surface sediments of the Philippine Sea are influenced by the Kuroshio current and its cou nterclockwise current. Clay mineralogy in drilled core samples from the Philippine Sea revealed the sedimentary history of clay minerals since the early Cenozoic era. The clay mineral composition in the drilled core samples has been changed by the factors influencing such as geodynamics, volcanic activity, climatic change, and oceanic current throughout the Cenozoic era
