Hydro-geochemical and isotopic composition of groundwater, with emphasis on sources of salinity, in the aquifer system in Northwestern Tunisia

Hamed, Younes; Dhahri, Ferid

doi:10.1016/j.jafrearsci.2013.02.004

Cited by 49 publications

(21 citation statements)

References 52 publications

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“…These techniques have been widely used to obtain groundwater information such as its source, recharge and the interaction between groundwater and surface water (De Vries and Simmers, 2002;Yuko et al, 2002;Yang et al, 2012a). The technique of stable isotopes as excellent tracers has been widely used by many scholars in the study of hydrological cycle (Chen et al, 2011;Cervi et al, 2012;Garvelmann et al, 2012;Yang et al, 2012a;Hamed and Dhahri, 2013;Kamdee et al, 2013). Greater knowledge on the origin and behavior of major ions in groundwater can enhance the understanding of the geochemical evolution of groundwater.…”

Section: F Liu Et Al: Identifying the Origin And Geochemical Evolutmentioning

confidence: 99%

“…There are no perennial or ephemeral rivers within the study area; the main surface water bodies are Subei and Kuisheng lakes, and they are situated in the same watershed considering actual hydrogeological conditions and groundwater flow field. In response to precipitation, diffuse overland flow and groundwater recharge the Subei and Kuisheng lakes (Hou et al, 2006;. Subei Lake is located in the low-lying center of the study area ( Fig.…”

Section: F Liu Et Al: Identifying the Origin And Geochemical Evolutmentioning

confidence: 99%

“…The maximum thickness of Cretaceous rocks could be nearly 1000 m in the Ordos Plateau (Yin et al, 2009), so the Cretaceous formation composed of mainly sandstone is the major water-supplying aquifer of the investigated area. Calcite, dolomite, anhydrite, aragonite, gypsum, halite and feldspar are major minerals in the Quaternary and Cretaceous strata (Hou et al, 2006).…”

Section: Geologic and Hydrogeologic Settingmentioning

confidence: 99%

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Identifying the origin and geochemical evolution of groundwater using hydrochemistry and stable isotopes in the Subei Lake basin, Ordos energy base, Northwestern China

Liu

Song

Yang

et al. 2015

Hydrol. Earth Syst. Sci.

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Abstract. A series of changes in groundwater systems caused by groundwater exploitation in energy base have been of great concern to hydrogeologists. The research aims to identify the origin and geochemical evolution of groundwater in the Subei Lake basin under the influence of human activities. Water samples were collected, and major ions and stable isotopes (δ18O, δD) were analyzed. In terms of hydrogeological conditions and the analytical results of hydrochemical data, groundwater can be classified into three types: the Quaternary groundwater, the shallow Cretaceous groundwater and the deep Cretaceous groundwater. Piper diagram and correlation analysis were used to reveal the hydrochemical characteristics of water resources. The dominant water type of the lake water was Cl-Na type, which was in accordance with hydrochemical characteristics of inland salt lakes; the predominant hydrochemical types for groundwater were HCO3–Ca, HCO3–Na and mixed HCO3–Ca–Na–Mg types. The groundwater chemistry is mainly controlled by dissolution/precipitation of anhydrite, gypsum, halite and calcite. The dedolomitization and cation exchange are also important factors. Rock weathering is confirmed to play a leading role in the mechanisms responsible for the chemical composition of groundwater. The stable isotopic values of oxygen and hydrogen in groundwater are close to the local meteoric water line, indicating that groundwater is of modern local meteoric origin. Unlike significant differences in isotopic values between shallow groundwater and deep groundwater in the Habor Lake basin, shallow Cretaceous groundwater and deep Cretaceous groundwater have similar isotopic characteristics in the Subei Lake basin. Due to the evaporation effect and dry climatic conditions, heavy isotopes are more enriched in lake water than in groundwater. The low slope of the regression line of δ18O and δD in lake water could be ascribed to a combination of mixing and evaporation under conditions of low humidity. Comparison of the regression line for δ18O and δD showed that lake water in the Subei Lake basin contains more heavily isotopic composition than that in the Habor Lake basin, indicating that lake water in the discharge area has undergone stronger evaporation than lake water in the recharge area. Hydrochemical and isotopic information of utmost importance has been provided to decision makers by the present study so that a sustainable groundwater management strategy can be designed for the Ordos energy base.

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Section: F Liu Et Al: Identifying the Origin And Geochemical Evolutmentioning

confidence: 99%

Section: F Liu Et Al: Identifying the Origin And Geochemical Evolutmentioning

confidence: 99%

Section: Geologic and Hydrogeologic Settingmentioning

confidence: 99%

See 1 more Smart Citation

Identifying the origin and geochemical evolution of groundwater using hydrochemistry and stable isotopes in the Subei Lake basin, Ordos energy base, Northwestern China

Liu

Song

Yang

et al. 2015

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Samples analyzed by ICP-MS were acidified with an ultra-pure 1:1 nitric acid (30% HNO3) mixture after filtration in the field. Batches of 48 Non-parametric two-tailed correlation analysis (Kendall and Spearman correlations) was performed for the hydrogeochemical and field parameters in addition to basic statistical treatment using SPSS software package.…”

Section: Methodsmentioning

confidence: 99%

“…Shkarta spring samples are isotopically enriched compared to the other springs. In argillaceous carbonates, evaporation leads to enrichment of isotopes in the pore water [48]. The isotopic enrichment of Shkarta spring relates to slow infiltration because of low permeability in the marly limestone of Shiranish aquifer and thus increased evaporation.…”

Section: Isotopic Pattern Of the Karst Springsmentioning

confidence: 99%

Assessment of Hydrogeochemistry and Environmental Isotopes in Karst Springs of Makook Anticline, Kurdistan Region, Iraq

2015

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Karst springs of the Makook anticline were investigated to get more insight into the hydrogeologic, hydraulic, and hydrodynamic behavior of this complex karst system. Eight springs were studied in terms of hydrogeochemical constituents as well as δ 18 O and δ 2 H during September 2011 to November 2012. For the first time, the local meteoric water line was plotted for the area based on precipitation data from the period November 2011 to April 2012. The regional meteoric line plots between the global and Mediterranean meteoric water lines. The majority of the spring samples plot between the local and Mediterranean meteoric water lines implying influences by Mediterranean air masses, rapid infiltration of rainfall through the karst system and a short residence time (shallow karst aquifers). The correlation of d-excess and saturation index of halite was used to evaluate the evaporation process in karst waters of the area. The temporal variation in isotopic composition of karst springs was observed making it possible to distinguish between different origins for springs and indicate a possible connection between the aquifers and depending on this, the karst system can be classified into three aquifers: Behkme aquifer, Kometan aquifer, and Shiranish aquifer.

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Salinisation of soils in semi‐arid endorheic zone: Case of Chott El Beida (Algeria)

Laoufi,

Ait Mechedal,

Daoud

2023

Land Degrad Dev

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Chott El Beida, North of Algeria (Setif, 585 km2), is an endorheic zone located in a semi‐arid climate. It is among the first chotts listed under the Ramsar Convention on the Wetlands of International Importance. Numerous studies on wetlands in the Setif region have focused on hydrogeology, avifauna, and vegetation. However, only one study has been devoted to soil studies. This study focused on the pedological and geochemical aspects of salinity in this area. This study was conducted on a toposequence of 200 m comprising eight soil profiles. A set of 24 samples were collected from the top to a depth (0–200 cm) and were subjected to a series of physical and chemical analyses. The concentrations of the major elements were used to determine the chemical facies and calculate the saturation indices for each mineral and residual alkalinity using geochemical modelling with PHREEQC. This study shows that the salinity in Chott El Beida is very variable, varying from less saline to extremely saline, moving from the outside to the centre of the chott, with two types of saline profiles: the descending type towards the outside of the chott and the ascending type in the highly saline depression. Geochemical investigations demonstrated that the dominant facies is (Na‐Cl) which is in accordance with the neutral saline pathway. The phenomenon of salinisation in Chott El Beida is controlled mainly by the precipitation of minerals, namely, calcite, aragonite, dolomite, gypsum, and anhydrite, and the dissolution of evaporite minerals. The study of calcite residual alkalinity and generalised residual alkalinity showed that salinisation evolves in the neutral saline path without the risk of alkalinization.

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Hydro-geochemical and isotopic composition of groundwater, with emphasis on sources of salinity, in the aquifer system in Northwestern Tunisia

Cited by 49 publications

References 52 publications

Identifying the origin and geochemical evolution of groundwater using hydrochemistry and stable isotopes in the Subei Lake basin, Ordos energy base, Northwestern China

Identifying the origin and geochemical evolution of groundwater using hydrochemistry and stable isotopes in the Subei Lake basin, Ordos energy base, Northwestern China

Assessment of Hydrogeochemistry and Environmental Isotopes in Karst Springs of Makook Anticline, Kurdistan Region, Iraq

Salinisation of soils in semi‐arid endorheic zone: Case of Chott El Beida (Algeria)

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