The age and origin of groundwater in the Great Western Erg sub-basin of the North-Western Sahara aquifer system: Insights from Krechba, central Algeria

Darling, W.G.; Sorensen, James; Newell, Andrew J.; Midgley, J.; Benhamza, Moussa

doi:10.1016/j.apgeochem.2018.07.016

Cited by 13 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This composition recalls that typical of older aquifers that in surrounding areas are ascribed to the Lower Cretaceous (Abid et al, 2011;Tarki et al, 2012;Kamel, 2013;Mokadem et al, 2016). Deeper aquifers are generally characterized by more negative isotope composition inherited by palaeo-precipitation having D- 18 O lighter than the present-day weighted mean value for rain (Edmunds et al, 2003), possibly having Holocene (Abouelmagd et al, 2012) or even Late Pleistocene age (Guendouz and Moulla, 2010;Darling et al, 2018). However, the involvement of such deep and old water components cannot be assumed as the general source of salinization, which appears mainly to be related to water-rock interactions within the shallower (and salt-bearing) Miocene-Pliocene and Quaternary aquifers in the presence of concomitant evaporation.…”

Section: Discussionsupporting

confidence: 61%

Hydrogeological and geochemical characterization of groundwater in the F'Kirina plain (eastern Algeria)

Rahal

Gouaidia

Fidelibus

et al. 2021

Applied Geochemistry

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 61%

Hydrogeological and geochemical characterization of groundwater in the F'Kirina plain (eastern Algeria)

Rahal

Gouaidia

Fidelibus

et al. 2021

Applied Geochemistry

View full text Add to dashboard Cite

“…Pertaining to this specific example, an approach better suited for isolating and estimating late‐Pleistocene temperatures is the comparison of late‐Holocene versus late‐Pleistocene groundwater noble gas concentrations (Mazor, ). The noble‐gas‐based paleotemperature reconstruction approach has been applied to estimate past temperatures in dozens of aquifer systems around the world (e.g., Andrews & Lee, ; Mazor & Verhagen, ; Heaton et al, ; Phillips et al, ; Andrews et al, ; Stute & Deák, ; Fontes et al, ; Stute, Clark, et al, ; Stute, Forster, et al, ; Clark et al, , ; Beyerle et al, ; Stute & Talma, ; Edmunds et al, ; Elliot et al, ; Weyhenmeyer et al, ; Condesso de Melo et al, ; Huneau et al, ; Beyerle et al, ; Guendouz et al, ; Lehmann et al, ; Kulongoski et al, ; McMahon et al, ; Plummer et al, ; Zuber et al, ; Kloppmann et al, ; Edmunds & Smedley, ; Edmunds et al, ; Kennedy & Genereux, ; Klump et al, ; Kreuzer et al, ; Osenbrück et al, ; Kulongoski et al, ; Blaser et al, ; Morrissey et al, ; von Rohden et al, ; Wieser et al, ; Varsányi et al, ; Corcho Alvarado et al, ; Szocs et al, ; Abouelmagd et al, ; Seltzer et al, ; Mihajlov et al, ; Saadi et al, ; Darling et al, ). More frequent intercomparisons of noble gas concentrations and fossil groundwater δ 18 O values may help to decouple influences of late‐Pleistocene to late‐Holocene warming from deglacial shifts to other hydroclimatic processes.…”

Section: Paleoclimate Conditionsmentioning

confidence: 99%

Global Isotope Hydrogeology―Review

Jasechko

2019

Reviews of Geophysics

218

124

View full text Add to dashboard Cite

Groundwater 18O/16O, 2H/1H, 13C/12C, 3H, and 14C data can help quantify molecular movements and chemical reactions governing groundwater recharge, quality, storage, flow, and discharge. Here, commonly applied approaches to isotopic data analysis are reviewed, involving groundwater recharge seasonality, recharge elevations, groundwater ages, paleoclimate conditions, and groundwater discharge. Reviewed works confirm and quantify long held tenets: (i) that recharge derives disproportionately from wet season and winter precipitation; (ii) that modern groundwaters comprise little global groundwater; (iii) that “fossil” (>12,000‐year‐old) groundwaters dominate global aquifer storage; (iv) that fossil groundwaters capture late‐Pleistocene climate conditions; (v) that surface‐borne contaminants are more common in younger groundwaters; and (vi) that groundwater discharges generate substantial streamflow. Groundwater isotope data are disproportionately common to midlatitudes and sedimentary basins equipped for irrigated agriculture, but less plentiful across high latitudes, hyperarid deserts, and equatorial rainforests. Some of these underexplored aquifer systems may be suitable targets for future field testing.

show abstract

“…The CI is nearly entirely captive in the center basin. The heavy isotope concentrations are highly uniform, concentrated on δ 18 O = -8,4 ± 0,4‰ and δ 2 H = -61 ± 3‰ (Darling et al 2018). This uniformity has been documented since the beginning of studies on stable isotope composition (Gon antini et al.…”

Section: Iii3 Tolga Groundwater Recharge Mechanismmentioning

confidence: 98%

Contribution of Stables Isotopes to the Study of the Groundwater Recharge in the Southern Foothills of the Saharan Atlas: The case of Tolga Region, North Eastern Algeria

Zouaoui

Menani

Gaagai

et al. 2022

Preprint

View full text Add to dashboard Cite

Tolga groundwater is one of Biskra's most important water supplies for both drinking and agriculture. The purpose of this study is to assess the hydrochemical and isotope (2H and 18O) signature of water in the Tolga area. To evaluate the hydrogeology of groundwater in the Tolga region, a chemical, piezometric, and isotopic research was employed. The results of the Piper diagram revealed that there is just one major hydrochemical facies in the research region, which corresponds to Ca–Mg–Cl–SO4. The piezometry of limestone sheets shows that as one goes westward, the turns become less substantial, with turns about 20 meters and a piezometric level of 140 m. For the first time, the local meteoric water line (LMWL) was drawn for Complexe Teminal (CT) and Continental Intercalaire (CI) on Tolga groundwater. The Tolga area LMWL refers to the equation δ2H= 7,18 δ18O + 4.17 with R2 about 0.85. CI and CT measurement locations indicate deuterium excess values ranging from 8.35 to 12.57. Indeed, the majority of values were more than 10‰ (mean of 10.36 ± 2.01‰). Furthermore, waters from Eocene have an isotopic composition of -7.57 ± 0.68‰ in δ18O and − 49.04 ± 4.69‰ In δ2H. The results of the sample characterisation analysis show that the majority of the groundwater samples analysed are of the Ca-Mg-SO4 water type. In addition, the intense exploitation aquifer water and the region's arid climatic conditions resulted in a large decrease in the piezometric limestone level. Finely, the signature of 2H and 18O data indicate that water comes from local precipitation and recent water, and groundwater recharge is influenced by quick infiltration.

show abstract

The age and origin of groundwater in the Great Western Erg sub-basin of the North-Western Sahara aquifer system: Insights from Krechba, central Algeria

Cited by 13 publications

References 24 publications

Hydrogeological and geochemical characterization of groundwater in the F'Kirina plain (eastern Algeria)

Hydrogeological and geochemical characterization of groundwater in the F'Kirina plain (eastern Algeria)

Global Isotope Hydrogeology―Review

Contribution of Stables Isotopes to the Study of the Groundwater Recharge in the Southern Foothills of the Saharan Atlas: The case of Tolga Region, North Eastern Algeria

Contact Info

Product

Resources

About