摘要
以EA01孔为研究对象,运用元素地球化学数据并辅以古生物、矿物等指标探讨东海中陆架北部的地层划分及物质来源。首先在前人工作的基础上研究常微量元素垂向变化,发现EA01孔沉积物元素地球化学地层学信息可以作为指示地层和古气候信息的良好指标;同时运用因子分析,La/Yb—N i/Co—Cr/V三角图和U/Th—(Zr+H f)/(A l2O3+TiO2)散点图等多种方法分析了EA01孔沉积物的物质来源,认为EA01孔沉积物主要来源于长江,其物质成分可能部分受到古气候和沉积环境的影响。
There are only a few long cores drilled and studied on the outer continental shelf of the East China Sea with water depth more than 50m, core EA01 is one of them with many indexes analyzed. The present study mainly utilizes geochemical data to study the sequence and material source of the core. The down core variation of geochemical data is an important index for the sequence and paleoclimate, 1 cold event and 3 warm events are identified. Many methods including factor analysis, La/Yb—Ni/Co—Cr/V ternary diagram and U/Th—（ Zr ＋ Hf）/（ Al2O3 ＋ TiO2 ） distribution scatter diagram are used to determine the material source of core EA01, and it is found that the material of core EA01 mainly come from the Changjiang River, which may vary partly according to different climate and environment.
出处
《沉积学报》
CAS
CSCD
北大核心
2006年第3期356-364,共9页
Acta Sedimentologica Sinica
基金
国家自然科学基金(批准号:40176018和40421150011)
课题(118-03-5-1)
海洋局青年基金(2005306)资助
关键词
东海陆架
地球化学
物源
EA01
continental shelf of the East China Sea
geochemistry
material source
EA01
