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Geothermometry and geochemistry of groundwater in the Continental Intercalaire aquifer, southeastern Algeria: Insights from cations, silica and SO4-H2O isotope geothermometers

文献类型：期刊论文

作者Abdelali, Adel2; Nezli, Imed Eddine2; Kechiched, Rabah3; Attalah, Said4; Benhamida, Slimane Abdeldjabbar1,2; Pang, Zhonghe5
刊名APPLIED GEOCHEMISTRY
出版日期2020-02-01
卷号113页码:12
关键词Continental intercalaire Isotope geochemistry Geothermometry Geothermal systems Isotope geothermometry Mineral equilibrium
ISSN号0883-2927
DOI10.1016/j.apgeochem.2019.104492
英文摘要Characterization of geochemistry and geothermometry of the groundwater from the Continental Intercalaire (CI) aquifer, one of the largest aquifers in the world, stretching over one million km(2) surface area shared between Algeria, Tunisia and Libya, was conducted in southeastern Algeria nearby the border with Tunisia. Thirty-two water samples were collected from boreholes to analyze the physicochemical parameters and stable isotopes (delta O-18((H2O)), delta O-18((SO4)), delta S-34 ((SO4))) and determine the origin of water mineralization of the CI aquifer. Water temperature was assessed using several geothermometers, such as cations, silica and SO4-H2O stable isotopes. The CI aquifer displayed a discharge temperature varying from 45 to 65.1 degrees C due to water circulation at deeper depths ranging from 1000 to 2200 m. The Results show that CI water contains high total dissolved solids (TDS) and neutral to slightly alkaline pH. The most frequent water types were Na-Cl-SO4 and Ca-SO4 indicating the geological formation nature of CI aquifer which is mainly composed of evaporites. The application of Na-K and Na-K-Ca geothermometers yielded unreliable temperatures. However, Na-Li geothermometer resulted in relatively plausible temperatures ranging from 74.69 to 147.83 degrees C. Quartz and CaSO4-H2O isotope geothermometer are the most suitable methods for temperature estimation, due to their attainment of equilibrium resulting in temperatures ranging from 62 to 93 degrees C, and validation by the multiple mineral equilibrium approach. The present study demonstrated a successful application of CaSO4-H2O isotope geothermometer in a low enthalpy (<100 degrees C) geothermal system. The results corroborate previous findings on the same CI aquifer at the Tunisian side and on carbonate-evaporite geothermal reservoirs. Furthermore, geothermal potential of the CI aquifer has been highlighted suggesting its use as a source of renewable energy which could be applied in heating greenhouses and/or generating electricity.
WOS关键词ILMENITE-SERIES GRANITOIDS ; STABLE-ISOTOPE ; MINERAL EQUILIBRIA ; THERMAL GROUNDWATER ; DISSOLVED SULFATE ; MAGNETITE-SERIES ; SULFUR ISOTOPE ; IGNEOUS ROCKS ; WATER ; TEMPERATURE
资助项目national research project (PRFU)[E04N01UN300120180002]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000514814800011
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构national research project (PRFU) ; national research project (PRFU) ; national research project (PRFU) ; national research project (PRFU) ; national research project (PRFU) ; national research project (PRFU) ; national research project (PRFU) ; national research project (PRFU)
源URL[http://ir.iggcas.ac.cn/handle/132A11/95634]  
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Abdelali, Adel
作者单位1.ANRH, Direct Sud Ouargla, Bir Mourad Rais, Algeria
2.Univ Kasdi Merbah Ouargla, Lab Geol Sahara, Ouargla 30000, Algeria
3.Univ Kasdi Merbah Ouargla, Lab Reservoirs Souterrains Petroliers Gaziers & A, Ouargla 30000, Algeria
4.Univ Arizona, Sch Plant Sci, Tucson, AZ USA
5.Chinese Acad Sci, Inst Geol & Geophys, 19 Beitucheng West Rd, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Abdelali, Adel,Nezli, Imed Eddine,Kechiched, Rabah,et al. Geothermometry and geochemistry of groundwater in the Continental Intercalaire aquifer, southeastern Algeria: Insights from cations, silica and SO4-H2O isotope geothermometers[J]. APPLIED GEOCHEMISTRY,2020,113:12.
APA Abdelali, Adel,Nezli, Imed Eddine,Kechiched, Rabah,Attalah, Said,Benhamida, Slimane Abdeldjabbar,&Pang, Zhonghe.(2020).Geothermometry and geochemistry of groundwater in the Continental Intercalaire aquifer, southeastern Algeria: Insights from cations, silica and SO4-H2O isotope geothermometers.APPLIED GEOCHEMISTRY,113,12.
MLA Abdelali, Adel,et al."Geothermometry and geochemistry of groundwater in the Continental Intercalaire aquifer, southeastern Algeria: Insights from cations, silica and SO4-H2O isotope geothermometers".APPLIED GEOCHEMISTRY 113(2020):12.

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来源：地质与地球物理研究所

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