• 责任者：Feng Xuwen (Geology Science Department ; Zhejiang University ; Hangzhou 310027 ; China) ; Jin Xianglong
• 刊名：Marine Geology & Quaternary Geology
• 出版年：2009
• 卷期：29(2)
• 关键词：海洋沉积物 ; marine sediments ; 浊流 ; turbidity currents ; 长江口 ; Yangtze River Mouth
• 页码：p.25-32
• 分类号：3 illus., 2 tables, 32 refs.
• issnNo：ISSN0256-1492
• isbnNo：CN37-1117/P

The authors selected two cores in the Yangtze estuary, one within the region of seasonal hypoxia (named CJ43 core) and the other nearby but outside the hypoxia region (named CJ56 core). The grain size and elements, including ten kinds of major elements and thirteen kinds of trace elements, were determined on the ²¹⁰Pb-dated sediment cores. The two core sediments had different resources and represented different element distribution characteristics. Major sources of the CJ56 core sediment were from the old Yellow River estuary, and the distribution of most elements was controlled by “grain size effects”. The sources of the CJ43 core sediment were mainly from the riverine input of the Yangtze River in summer and the burial fluxes of the dead marine organisms. The results indicate the redox environment of the bottom water-sediment interface has been changed, which might be caused by the eutrophication and hypoxia in the Yangtze estuary.