A comparative study on the stable isotopes from precipitation to speleothem in four caves of Guizhou, China

	A comparative study on the stable isotopes from precipitation to speleothem in four caves of Guizhou, China
	Weijun Luo; Shijie Wang; Xingneng Xie
	2013
发表期刊	Chemie der Erde - Geochemistry
卷号	73 期号:2 页码:205-215
摘要	Monitoring and sampling of soil waters, and cave drip waters were performed monthly at four caves of Guizhou, Southwest China, from April 2003 to May 2004, in order to comparatively study the control factors of stable isotope in drip waters and their corresponding speleothems. delta D and delta O-18 were measured for all samples including precipitation, soil waters, drip waters and modern speleothems. These results indicate that the amplitudes of the isotope values decrease gradually from precipitation to drip water in these caves, obviously suggesting the homogenization. Under certain conditions, it is possible to use speleothems to study high resolution (seasonal, even monthly) paleoclimatic changes in Liangfeng Cave (LFC) and Qixing Cave (QXC), but only low resolutions (more than a year) could be reached in Jiangjun Cave (JJC) and Xiniu Cave (XNC). The relationships between local meteoric water line (LMWL) and isotopic data of fluid inclusions in speleothems from the four caves can estimate local paleoclimate and paleoenvironment; however, it is debatable whether d-excess values can predict them. The effects of hydrological processes on the delta O-18 values in drip waters cannot be ignored. Hydrochemistry may cause isotopic disequilibrium in the formation of speleothems.
关键词	Stable Isotopes Cave Drip Water Soil Water Precipitation Speleothem Guizhou China
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5046
专题	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
推荐引用方式 GB/T 7714	Weijun Luo,Shijie Wang,Xingneng Xie. A comparative study on the stable isotopes from precipitation to speleothem in four caves of Guizhou, China[J]. Chemie der Erde - Geochemistry,2013,73(2):205-215.
APA	Weijun Luo,Shijie Wang,&Xingneng Xie.(2013).A comparative study on the stable isotopes from precipitation to speleothem in four caves of Guizhou, China.Chemie der Erde - Geochemistry,73(2),205-215.
MLA	Weijun Luo,et al."A comparative study on the stable isotopes from precipitation to speleothem in four caves of Guizhou, China".Chemie der Erde - Geochemistry 73.2(2013):205-215.

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