Based on ten sediment samples collected in the sea areas of Pearl River Estuary and South Yellow Sea,the authors analyzed 67 elements to study geochemical characteristics. The patterns of element abundances and their distributions have been investigated in this paper. The results show that sediments in the coastal sea area mainly originate from terrestrial source and,except for Ca and Sr, the distributions of major elements possess the characteristics of terrestrial materials. A comparison between Pearl Riv...