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HYDROGEOCHEMICAL EVALUATION OF THE GROUNDWATER WITHIN ABU JIR FAULT ZONE, HIT – KUBAISA REGION, CENTRAL IRAQ | ||
| Iraqi Bulletin of Geology and Mining | ||
| Article 1, Volume 6, Issue 1, 2010, Pages 121-138 | ||
| Authors | ||
| Mushtaq A. Gharbie; Bayan M. Hussien | ||
| Abstract | ||
| The main theme of the study is to illustrate the groundwater quality in the hydrogeologic system within Abu Jir Fault Zone (Hit – Kubaisa region). The monitoring networks of the groundwater quality and water point locations were determined on the basis of the available previous information. The changes in the chemical composition of the all groundwater in the area were examined to get the spatial distribution of each parameter. Three groups of factors that govern the groundwater quality in the studied area were determined: - Mineralogy of the aquifer sediments. - System of the dissolved load carrying and its relation with the water flow system. - Hydro-geochemical processes (mixture, dispersion, enrichment and ionic exchange). The main hydrochemical characteristics of the groundwater are presented in detail, regarding their concentration as space variations. The results show great dispersal of the data with dissymmetric distribution. Special attention was given to ionic ratios, which facilitate the elucidation of the hydrochemical origin of these waters. The classification of the groundwater according to their hydrochemical facies enabled the definition of three main types with dominance of sodic and calcic chlorides, just like the connate water of marine origin and oil field waters mixed with water of meteoric origin. Besides, these waters are from fractured water bearing horizons of Fat'ha, Euphrates, Ana and Baba formations. More salty water could be observed in the discharge zone of deeper horizons in older formations than those of shallow horizons in formations of younger ages. The physico-chemical parameters of spring waters indicate preferable factors that encourage the use of some of these springs in medical purpose. | ||
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