GYIG OpenIR  > 环境地球化学国家重点实验室  > 期刊论文
Characteristics of strontium isotope and their implications in Qixing Cave of Guizhou, China
ZHU XiaoLong; WANG ShiJie; LUO WeiJun
2011
发表期刊Chinese Science Bulletin
卷号56期号:7页码:670-675
摘要The strontium isotopic compositions (87Sr/86Sr) of samples including soils, bedrock, soil waters, drip waters and their corresponding speleothems in the Qixing Cave (QXC), Guizhou Province, China, were systemically measured and analyzed. The results indicate that there are significant Sr isotopic differences among samples. The mean 87Sr/86Sr ratios in drip water for the samples 1# , 4# and 9# were 0.709568, 0.709139 and 0.708761, respectively, which possibly result from different flow paths, residence times, and other hydrogeological processes in the unsaturated zone overlying QXC. Meanwhile, levels of 40.8%, 57.6% and 72.4% of Sr in drip waters for 1# , 4# and 9# , respectively, were derived from bedrock dissolution, which was calculated by the mixture model of the two end-members (soil and bedrock). There is, however, no positive correlation between the relative proportion from bedrock dissolution (δ 13C value is 1.8‰) and drip water δ 13CDIC values. The mean drip water δ 13CDIC value in 1# is the heaviest (–4.5‰) with the lowest contribution rate of bedrock dissolution, whereas the value in 9# is the lightest (–9.3‰) with the highest contribution rate of bedrock dissolution. The proportion from host rock dissolution in 4# is higher than that in 1# and lower than that in 9# , while its mean drip water δ 13CDIC value (–8.6‰) is higher than that of 9# and lower than that for 1# . This suggests that the prior calcite precipitation (PCP) processes in the unsaturated zone overlying the cave are responsible for the δ 13CDIC value differences between different drip waters, and not bedrock dissolution. Furthermore, this study also demonstrates that the 87Sr/86Sr ratios of speleothems in the 1# and 4# mainly reflect the variation in the relative proportions from the soil system (soil water) and bedrock dissolution overlying the cave. It is, therefore, feasible to use the strontium isotopic signals of speleothems as an indicator for soil chemical weathering intensity, and consequently as a monsoon proxy in the study area.
关键词Strontium Isotope Cave Drip Water Source Prior Calcite Precipitation (Pcp) Qixing Cave Of Guizhou
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/352002/6719
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
ZHU XiaoLong,WANG ShiJie,LUO WeiJun. Characteristics of strontium isotope and their implications in Qixing Cave of Guizhou, China[J]. Chinese Science Bulletin,2011,56(7):670-675.
APA ZHU XiaoLong,WANG ShiJie,&LUO WeiJun.(2011).Characteristics of strontium isotope and their implications in Qixing Cave of Guizhou, China.Chinese Science Bulletin,56(7),670-675.
MLA ZHU XiaoLong,et al."Characteristics of strontium isotope and their implications in Qixing Cave of Guizhou, China".Chinese Science Bulletin 56.7(2011):670-675.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Characteristics of s(669KB) 开放获取使用许可浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[ZHU XiaoLong]的文章
[WANG ShiJie]的文章
[LUO WeiJun]的文章
百度学术
百度学术中相似的文章
[ZHU XiaoLong]的文章
[WANG ShiJie]的文章
[LUO WeiJun]的文章
必应学术
必应学术中相似的文章
[ZHU XiaoLong]的文章
[WANG ShiJie]的文章
[LUO WeiJun]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Characteristics of strontium isotope and their implications in Qixing Cave of Guizhou, China.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。