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Geochemistry and genesis of geothermal well water from a carbonate-evaporite aquifer in Chongqing, SW China

文献类型：期刊论文

作者Yang, Pingheng1,2,3; Dan, Luo1; Groves, Chris3; Xie, Shiyou1
刊名ENVIRONMENTAL EARTH SCIENCES
出版日期2019
卷号78期号:1页码:14
关键词Carbonate-evaporite Thermal water Reservoir temperature Mixture fraction Geothermometer Tongjing China
ISSN号1866-6280
DOI10.1007/s12665-018-8004-3
英文摘要Thermal water is an importantnatural resource. The hydrogeochemistry and geothermometry of thermal water from theQianyi well (TWQW), which is associated withthe Tongjing Warm Springs located in the Eastern Sichuan Fold Belts in Chongqing, SW China, was investigated. The reservoir of this region consists of upper and middle Triassic carbonate and evaporiterocks. The TWQW was of Ca-Mg-SO4 type with water temperature of 47.3 degrees C. Plotting on the Giggenbach Na-K-Mg diagram indicates that the TWQW was immature due to a mixing of shallow karst groundwater and thermal water. The mixing model indicates that the TWQW was composed of 49% deep thermal water and 51% shallow karst groundwater. Geothermometers suggest a reservoir temperature of about 79 degrees C, locating this aquifer at a depth of similar to 2.5km. The D and O-18 values plot near the local meteoric water line, suggesting that the TWQW originates from local meteoric water at recharge elevations of similar to 780-1160m a.s.l.. A conceptual model of thegenesis for Tongjing Warm Springs was developed. Rainfall infiltrates via karst outcrops in the elevated areas of thenorthern Tongluoxia anticline, extracts heat from reservoir rocks at depth, dissolves minerals and becomes thermal water. The thermal water is driven by gravity, flows through thecarbonate-evaporite aquifer, and follows the Tongluoxia anticline of the Eastern Sichuan Fold Belts to the southwest. The thermal water ascends to the surface along the incision created by the Wentang River and mixes with shallow karst groundwater to create warm springs. This study may be relevant toother karst geothermal reservoirs in China.
WOS关键词KARST GROUNDWATER ; SPRING WATERS ; THERMAL WATER ; HYDROGEOCHEMISTRY ; NITRATE ; SYSTEM ; BASIN ; EQUILIBRIA ; PRESSURE ; SULFATE
资助项目Fundamental Research Funds for the Central Universities[XDJK2018AB002] ; China Scholarship Council (CSC)
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
语种英语
WOS记录号WOS:000455022900004
出版者SPRINGER
资助机构Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; China Scholarship Council (CSC) ; China Scholarship Council (CSC)
源URL[http://ir.iggcas.ac.cn/handle/132A11/90190]  
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Yang, Pingheng
作者单位1.Southwest Univ, Field Sci Observat & Res Base Karst Ecoenvironm N, Minist Nat Resources Peoples Republ China, Chongqing Key Lab Karst Environm,Sch Geog Sci, Chongqing 400715, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
3.Western Kentucky Univ, Crawford Hydrol Lab, Dept Geog & Geol, 1906 Coll Hts Blvd, Bowling Green, KY 42101 USA
推荐引用方式
GB/T 7714		 Yang, Pingheng,Dan, Luo,Groves, Chris,et al. Geochemistry and genesis of geothermal well water from a carbonate-evaporite aquifer in Chongqing, SW China[J]. ENVIRONMENTAL EARTH SCIENCES,2019,78(1):14.
APA Yang, Pingheng,Dan, Luo,Groves, Chris,&Xie, Shiyou.(2019).Geochemistry and genesis of geothermal well water from a carbonate-evaporite aquifer in Chongqing, SW China.ENVIRONMENTAL EARTH SCIENCES,78(1),14.
MLA Yang, Pingheng,et al."Geochemistry and genesis of geothermal well water from a carbonate-evaporite aquifer in Chongqing, SW China".ENVIRONMENTAL EARTH SCIENCES 78.1(2019):14.

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来源：地质与地球物理研究所

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