期刊论文

中文

干旱区资源与环境

1003-7578

2018

32

1

92-97

10.13448/j.cnki.jalre.2018.014

国家自然科学基金项目（41471153） 湖南省自然科学基金项目（2016JJ6015）资助

本校为第一机构

以4cm为间距,采集衡阳盆地高兴剖面86件土样进行了微量元素测试分析,研究结果表明: 1)剖面V、Ga、Th、Rb、Sr、Nb、Y、Ba、Cu、Pb、Cs、Zr、Mo、As等14种微量元素含量由底部往上呈现较高-低-最高的变化趋势,以124cm为界,剖面上部微量元素含量为高值区,下部为相对低值区。该特点对红土沉积时期的气候具有一定指示意义。2)在红土化学风化沉积过程中,V、Rb、Ga、Ba、Nb、Zr、Sr、Cu、Y、Th等元素间具有较好的相似性,表现为显著正相关关系,指示了它们的地球化学行为具有相对一致性;而Ni、Co、Zn元素与其他微量元素表现为负相关关系,表明了它们产生较为明显的分异。3) Sr /Ba、Sr /Cu和Rb /Sr值结合可...

With 4cm as the spacing,trace elements of 86 samples from Gaoxing red clay profile in Hengyang basin were analyzed. The results indicates that: (1) The contents of trace elements V,Ga,Th,Rb,Sr,Nb,Y, Ba,Cu,Pb,Cs,Zr,Mo and As present a change tendency of higher-low-the highest from the bottom to top of the profile. Taking 124cm as the boundary line,the contents of trace elements in the upper layer of profile are higher,and relatively lower in lower layers. The distribution characteristics could be the indicators of climate of red clay sedimentary period. (2) The trace elements V,Rb,Ga,Ba,Nb,Zr,S...