南黄海沉积物常量元素组成及物源分析

通过对南黄海295个站位沉积物样品的常量元素含量分析,研究了南黄海沉积物常量元素组成的R-型聚类分析、R-型因子分析及与物质来源的关系。南黄海沉积物常量元素Al2O3、MgO、K2O、Fe2O3分布基本相似;SiO2分布与Al2O3、MgO、K2O、Fe2O3分布相反;中、西部CaO、CaCO3分布与黄河、长江物源有明显关系;Na2O分布与黄河物质供给有关;TiO2分布反映了长江物质的运移方向。现代黄河物质及老黄河物质主要沉积于南黄海的西部、中部和东南部;海区东部物质反映来自朝鲜半岛物质的对南黄海东部的作用。长江物质主要局限于南黄海的西南和南部区域沉积;TiO2和Ti/Al分布反映了长江物质可能对南黄海中部区域也有所影响。

Major elements composition and provenance analysis in the sediments of the South Yellow Sea

Based on the major elements abundances of sediment samples from 295 stations in the South Yellow Sea, we have conducted the R-mode cluster analysis and R-mode factor analysis of major elements in the sedi- ments and their relationship with the sources. Al2O3, MgO,K2O and Fe2O3 have similar distributions, whereas SiO2 is negatively correlated with these oxides. The distributions of CaO and CaCO3 in the central and western areas of the South Yellow Sea indicate a clear link with source materials related to the Yellow River and the Yangtze River. The distribution of Na2O may be related to the supply of material from the Yellow River, whereas the distribution of TiO2 reflects transport at direction of material from Yangtze River. Materials from both recent and ancient Yellow River was deposited mainly in the western, central and southeast parts of the South Yellow Sea. Sediments in eastern part of the sea, show an influence of the source materials from the Korean peninsula. Material from the Yangtze River is mostly limited to regional deposits in the southwestern and southern parts of the South Yellow Sea, though the distributions of TiO2 and Ti/Al ratio may suggest an influence of material from the Yangtze River in the central area of the South Yellow Sea.