The Origin and MgCl2–NaCl Variations in an Athalassic Sag Pond: Insights from Chemical and Isotopic Data

Boschetti, Tiziano; Awadh, Salih Muhammad; Salvioli-Mariani, Emma

doi:10.1007/s10498-018-9337-y

Cited by 7 publications

(3 citation statements)

References 51 publications

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“…For the strontium isotopes ( 87 Sr/ 86 Sr) to be used successfully as a natural tracer in ground and surface waters, the isotope ratios of the potential endmembers must be distinct. If potential endmembers have distinct Sr isotopic ratios, Sr isotopes can be used to identify waters interacting with rocks from specific stratigraphic units [11,14,[16][17][18][19] and can even be used as sensitive indicators of seawater intrusion [20][21][22] or minute amounts of contamination [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Waters from the Djiboutian Afar: A Review of Strontium Isotopic Composition and a Comparison with Ethiopian Waters and Red Sea Brines

Boschetti

Awaleh

Barbieri

2018

Water

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Drinking water is scarce in Djibouti because of the hot desert climate. Moreover, seawater intrusion or fossil saltwater contamination of the limited number of freshwater aquifers due to groundwater overexploitation affect those who live close to the coastline (~80% of the population). Despite this, the geothermal potential of the country’s plentiful hot springs could resolve the increasing electricity demand. Strontium isotopes (87Sr/86Sr) are routinely used to determine sources and mixing relationships in geochemical studies. They have proven to be useful in determining weathering processes and quantifying endmember mixing processes. In this study, we summarise and reinterpret the 87Sr/86Sr ratio and Sr concentration data of the groundwater collected to date in the different regions of the Djibouti country, trying to discriminate between the different water sources, to evaluate the water/rock ratio and to compare the data with those coming from the groundwater in the neighbouring Main Ethiopian Rift and the Red Sea bottom brine. New preliminary data from the groundwater of the Hanlé-Gaggadé plains are also presented.

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Section: Introductionmentioning

confidence: 99%

Waters from the Djiboutian Afar: A Review of Strontium Isotopic Composition and a Comparison with Ethiopian Waters and Red Sea Brines

Boschetti

Awaleh

Barbieri

2018

Water

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“…Isotopes and dexcess values of the groundwater samples at the dry and wet period,s the δ ranges between -42.2 to -20.14 with an average of -27.7, and it ranges between (-7.26 and -3.08) with an average of -4.9) for δ 2 H and δ 18 O, respectively for the dry period. It ranges between 42.2 and -18.14) with an average of -29.8, and it ranges between -7.26 and -3.08) with an average of -5.2 for δ 2 H and δ 18 O, respectively in comparison the δ 2 H and δ 18 O in the groundwater for two periods, the isotopic composition of δ 2 H and δ 18 O was more enriched in the dry period due to evaporation effect in arid regions (Boschetti et al, 2018) . It appears that there is a low variation between the studied periods due to difference in the groundwater conditions (water temperature, water level and climate effect).…”

Section: Isotope Composition Of the Groundwater Samplesmentioning

confidence: 95%

Isotopic and Hydrochemical Study of Groundwater in an Area Between the Lesser Zab and Tigris River, Northern Iraq

Al-Kubaisi

Hassan

2021

IGJ

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Stable isotopes (2H, 18O) in the water cycle can carry all the information about the movement of water molecules, their ratio different from one place to another in rainfall. Stable isotopes are the function of evaporation, relative humidity, temperature and different longitude, latitude and altitude. On this base. A total of 28 water sample (20 samples were analyzed for major ions and 8 samples for stable isotopes) were collected for two periods to study the origin and the type of groundwater in the area between Lesser Zab and the Tigris river The Results indicated that groundwater samples in the study area are brackish saline water and excessively mineralized water. The average groundwater was classified as Mg-Na-Calcium: Cl-Sulfate for two periods. The groundwater samples represent earth alkali with privilege sulfate and chloride according to the piper diagram. The mean values of 18H and 2O in the groundwater sample are -27.7 and -4.9, respectively for the dry period, and -29.8 and -5.2, respectively, for the wet period. The d-excess varies significantly depending on the humidity and temperature at the vapor source. Isotopic analysis of 2H -18O for groundwater in the study area shows that the origin of groundwater in the study area is of meteoric origin from global source and rain from a local source. The downward shifting of the regression line on the 2H-18O diagram indicates that the samples have undergone evaporation events.

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“…Moreover, springs are a major source of drinking water, agriculture, and industries in many cities around the world as the water of these springs is of high quality, and on many occasions, it doesn't need filtering or purification before consumption (Awadh and Al-Ghani, 2014;Al-Hamdani et al, 2016). Springs can be defined as those spots of land from which water spurts naturally or forming ponds (Boschetti et al, 2018;Medler& Eldridge, 2021). Also, there is another term, which is seep that stands for a sort of springs that emerge due to the slow movement of water through the slits, pores, and rock perforations and flow out from the surface (U.S. Geological Survey, 2019) and this type of springs is the one that exists in the study area.…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical Assessment of Selected Springs Water in Aqra Area, Duhok Governorate, Northern Iraq

Aqrawi

2021

IGJ

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Fifteen spring water samples were collected from the study area, to identify its quality, as well as the prevailing water type in it. samples were analyzed to determine the concentrations of main cations Ca2+, Mg2+, Na+, and K+, and anions HCO3-, SO42-, Cl- and NO3-, as well as investigating the physio-chemical properties represented by Hydrogen Number, Electrical Conductivity, and Total Dissolved Solids. Piper classification demonstrated that all samples are of type normal earth alkaline water with prevailing bicarbonate with a percentage of 79.9% of all the samples, except for SP4, SP9, and SP11, which characterized with normal alkaline water with prevailing bicarbonate and sulfate or chloride with a percentage of 19.9%. The results of the analysis showed a prevalence of calcium ions over the rest of the cations followed by Mg2+, Na+, and K+, and a prevalence of HCO3- ion over the rest of the anions followed by NO3-, Cl-, and SO42-. The water quality index showed that all samples are categorized within the excellent type for drinking, with a range of 3.14-29.94. In addition, several classifications used (Eaton, 1950, Turgeon, 2000 and Don, 1995) demonstrated that the water is of excellent type to use for irrigation with Na%=2.51, Sodium Adsorption Ratio=0.08, and RSC=-1.65. Using Wilcox Diagram for irrigation water; show that all samples are within the domain of the excellent water for irrigation.

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The Origin and MgCl2–NaCl Variations in an Athalassic Sag Pond: Insights from Chemical and Isotopic Data

Cited by 7 publications

References 51 publications

Waters from the Djiboutian Afar: A Review of Strontium Isotopic Composition and a Comparison with Ethiopian Waters and Red Sea Brines

Waters from the Djiboutian Afar: A Review of Strontium Isotopic Composition and a Comparison with Ethiopian Waters and Red Sea Brines

Isotopic and Hydrochemical Study of Groundwater in an Area Between the Lesser Zab and Tigris River, Northern Iraq

Hydrogeochemical Assessment of Selected Springs Water in Aqra Area, Duhok Governorate, Northern Iraq

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