%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Boukich, O.
%A Bouaissa, M.
%A Taupin, Jean-Denis
%A Patris, Nicolas
%A Gharibi, E.
%T Groundwater mineralization processes in a semi-arid region : hydrogeochemical, isotopic and statistical approaches
%D 2025
%L fdi:010094437
%G ENG
%J Groundwater for Sustainable Development
%@ 2352-801X
%K Groundwater mineralization ; Hydrogeochemical ; Stable isotopes ; Age tracers ; Angads ; Morocco
%K MAROC ; ZONE SEMIARIDE
%M ISI:001541150200001
%P 101494 [12 ]
%R 10.1016/j.gsd.2025.101494
%U https://www.documentation.ird.fr/hor/fdi:010094437
%> https://www.documentation.ird.fr/intranet/publi/2025-09/010094437.pdf
%V 30
%W Horizon (IRD)
%X This study was conducted to determine the main hydrogeochemical processes controlling the mineralization in the Angads groundwater in North-East Morocco. To achieve this, hydrogeochemical compositions combined with multiple stable and radioactive isotopes (O-18, H-2, H-3, and C-14) were analyzed in groundwater. Statistical analysis showed that average ion concentrations in groundwater were in the following order: Na+ > Ca2+ > Mg2+ > K+ > NH4+ for cations, and Cl- > HCO3- > SO42- > NO3- for anions. The aquifer is mainly composed of Ca-Mg-Cl type waters, which account for over 70 % of the samples. The results show that water mineralization is mainly due to the dissolution of evaporites, as well as the influence of ion exchange, and probably a part of evaporative enrichment. The H-2 vs O-18 diagram revealed that aquifer recharge is more depleted isotopically than the local rainfall, pointing to a recharge in high elevation mountains to the south/south-east of the zone, and that all points are influenced by evaporation before or during infiltration. The levels of H-3 indicate that all samples show a limited recent water component mixed with an older component dated back to 2233 BP according to C-14 measurements.
%$ 062 ; 021