Non-residual Sr of the sediments in Daihai Lake as a good indicator of chemical weathering

	Non-residual Sr of the sediments in Daihai Lake as a good indicator of chemical weathering
	Yan Zeng; Jingan Chen; Jule Xiaoc, Liang Qi
	2013
Source Publication	Quaternary Research
Volume	79 Issue:2 Pages:284-291
Abstract	The Rb/Sr ratio of lake sediments has been demonstrated to be a potential indicator of chemical weathering by increasing work. However, Rb and Sr in lake sediments are derived from both chemical weathering and physical erosion. Rb and Sr of different forms in lake sediments may record different environmental processes and information. In this study, the variation patterns of Rb and Sr of different forms in sediments of Daihai Lake were investigated. The results show that Rb and Sr of different forms display noticeably different variation patterns due to their different sources and associated environmental processes. Using the Rb/Sr ratios of bulk lake sediments to reflect chemical weathering is not accurate. The non-residual Sr of the sediments without detrital carbonates, representing the Sr leached from the catchment, can be used as an index of chemical weathering because the weathering of Sr minerals is very sensitive to climate change, and the non-residual Sr content of the sediment is determined more by Sr2+ influx than by the physicochemical conditions of lake water. The correspondence between the non-residual Sr and TIC/TOC in Daihai Lake also indicates that the non-residual Sr of the sediments is a good indicator of chemical weathering in the catchment.
Keyword	Non-residual Sr Rb/sr Ratio Chemical Weathering Daihai Lake Sediment
Indexed By	SCI
Language	英语
Document Type	期刊论文
Identifier	http://ir.gyig.ac.cn/handle/352002/5103
Collection	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
Recommended Citation GB/T 7714	Yan Zeng,Jingan Chen,Jule Xiaoc, Liang Qi. Non-residual Sr of the sediments in Daihai Lake as a good indicator of chemical weathering[J]. Quaternary Research,2013,79(2):284-291.
APA	Yan Zeng,Jingan Chen,&Jule Xiaoc, Liang Qi.(2013).Non-residual Sr of the sediments in Daihai Lake as a good indicator of chemical weathering.Quaternary Research,79(2),284-291.
MLA	Yan Zeng,et al."Non-residual Sr of the sediments in Daihai Lake as a good indicator of chemical weathering".Quaternary Research 79.2(2013):284-291.

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