TY - JOUR N2 - A field survey has been conducted for the study area using the Global Positioning System (GPS) and geological and geomorphological maps of the area. The study area is one of the important areas in Iraq characterized by scarce water resources. The purpose of the study is to determine the hydro-chemical processes and their relationship to groundwater quality carried out in the southwestern desert region of Iraq, where the region lacks extensive studies of water resources. Twenty-eight groundwater samples were collected from wells distributed between the eastern borders of Saudi Arabia and the West Bank of the Euphrates River. For the purpose of hydrogeochemical analyses, the Fetter method was used to collect and examine samples. A large part of the recharge area is located in Saudi Arabia, where the groundwater bearing aquifer represented by the Dammam formation extends to Iraq and Saudi Arabian International borders. The analysis determined the order of cations (Na+ > Ca2+ > Mg2+ > K+) and anions (Cl– > SO42– > HCO3–). High values of the variation coefficient (CV) correspond to the concentration of potassium, sodium and chloride ions (CV: 68.7, 64.7 and 64 respectively). To identify the hydrochemical water facies, the Piper diagram was used. It was found that 53% of the water samples belong to the Na-Cl type and 40% are of the Ca-Mg-Cl type, while the rest of the samples are the Ca-Cl type. To identify geochemical processes, it was found that ion exchange processes via chloroalkaline indices 1 and 2 are prevalent between Ca2+, Mg2+ in the groundwater and Na+, K+ in water bearing rocks. To learn more about the processes that led to the concentration of certain ions, such as sodium, it was found that they tend to be of silicate minerals related to surface runoff of water in recharge areas and carbonic rocks. It was also found that rock / soil-groundwater interaction and evaporation processes were the formal processes in the saturated zone and evaporation in the unsaturated zone are prevalent processes of groundwater ion concentration. L1 - http://www.czasopisma.pan.pl/Content/121367/PDF/2021-03-JLWD-23-Al-Mutawqi.pdf L2 - http://www.czasopisma.pan.pl/Content/121367 PY - 2021 IS - No 50 EP - 228 DO - 10.24425/jwld.2021.138177 KW - Dammam formation KW - Durov diagram KW - facies KW - Gibbs diagram KW - groundwater KW - hydrogeochemical processes KW - Iraqi Southern Desert KW - major ions KW - Piper diagram A1 - Al-Mutawqi, Kareem Ghafel A1 - Ewaid, Salam Hussein A1 - Abed, Salwan Ali A1 - Al-Ansari, Nadhir A1 - Salim, Mudhafar A. A1 - Kadhim, Ameer J. PB - Polish Academy of Sciences; Institute of Technology and Life Sciences - National Research Institute DA - 2021.11.09 T1 - Hydrogeochemical processes and evaluation of groundwater in Al-Salman area – Iraqi Southern Desert SP - 220 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/121367 T2 - Journal of Water and Land Development ER -