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Chemical and isotopic evidences on evaporite dissolution as the origin of high sulfate water in a karst geothermal reservoir

文献类型：期刊论文

作者Bao, Yifan1,2,3; Pang, Zhonghe1,2,3; Huang, Tianming1,2,3; Li, Yiman1,2,3; Tian, Jiao1,2,3,4; Luo, Ji1,2,3,5; Qian, Tingqing6
刊名APPLIED GEOCHEMISTRY
出版日期2022-10-01
卷号145页码:11
关键词Sulfate-rich water Geothermal water Carbonate rocks Isotopes Evaporite mineral Mineral solubility
ISSN号0883-2927
DOI10.1016/j.apgeochem.2022.105419
英文摘要Using multiple isotopes including 87Sr/86Sr in water, delta 34SSO4, delta 18OSO4, delta 18OH2O and delta 2HH2O, delta 13CDIC and 14CDIC in water, we have investigated the origin and evolution of sulfate concentration (1472 mg/L) in the Tangquan Karst geothermal system in Nanjing, China. The sulfate has been found to be mainly derived from dissolution of gypsum and other evaporite minerals occurring in the carbonate reservoir. The dissolution of evaporite minerals is relatively easier than carbonate at elevated temperatures. We confirmed this differentiated dissolution process by reverse hydrogeochemical simulation using the PHREEQC code. The origin of sulfate is supported by 87Sr/86Sr isotope ratio (0.7088-0.709) with a typical marine signature. We further constrained the origin of sulfate with delta 34S in aqueous SO4 (27.6%o-34.2%o) and delta 18O in aqueous SO4 (14.3%o-18.4%o). Such sulfate-rich geothermal water usually occurs in open karst geothermal systems, favorable for Spa therapy in many places of the world.
WOS关键词STRONTIUM ISOTOPE ; DISSOLVED SULFATE ; ROCK INTERACTION ; THERMAL WATER ; SULFUR ; OXYGEN ; FRACTIONATION ; OXIDATION ; BACTERIAL ; SPRINGS
资助项目National Natural Science Founda- tion of China[41877209] ; National Natural Science Founda- tion of China[41877207] ; National Natural Science Founda- tion of China[42172277]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000875168900003
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China ; National Natural Science Founda- tion of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/107753]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Pang, Zhonghe
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.China Earthquake Adm, Inst Earthquake Forecasting, Beijing 100036, Peoples R China
5.State Power Investment Corp Res Inst, Beijing 102209, Peoples R China
6.Geoengn Invest Inst Jiangsu Prov, Nanjing 211102, Peoples R China
推荐引用方式
GB/T 7714		 Bao, Yifan,Pang, Zhonghe,Huang, Tianming,et al. Chemical and isotopic evidences on evaporite dissolution as the origin of high sulfate water in a karst geothermal reservoir[J]. APPLIED GEOCHEMISTRY,2022,145:11.
APA Bao, Yifan.,Pang, Zhonghe.,Huang, Tianming.,Li, Yiman.,Tian, Jiao.,...&Qian, Tingqing.(2022).Chemical and isotopic evidences on evaporite dissolution as the origin of high sulfate water in a karst geothermal reservoir.APPLIED GEOCHEMISTRY,145,11.
MLA Bao, Yifan,et al."Chemical and isotopic evidences on evaporite dissolution as the origin of high sulfate water in a karst geothermal reservoir".APPLIED GEOCHEMISTRY 145(2022):11.

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来源：地质与地球物理研究所

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