?iran (Gümü?hane) ?lçe Merkezi Su Kaynaklar?n?n Kalitesi ve Hidrojeokimyasal Özelliklerinin De?erlendirilmesi

The study area is located of ?iran District Center in the southwest Gümü?hane (NE Turkey). In this study, hydrogeochemical characteristics water resources district center were examined and metal element contents determined. area, basement rocks are represented by Eocene Kelkit formation, which composed sandstone, claystone, marl, shale tuff, unit covered unconformably Quaternary aged alluvium. These units form granular porous unconfined aquifers according to hydrogeological features. pH, specific conductance (SC) hardness (Fr°) values varied between 5.41-7.48, 106.9-141.3 µS/cm 4.72-6.78 (n= 18), respectively. According classification Intra-Continental Water Resources, these data show that samples mostly class-I II, rarely class-III quality characteristics. generally classified as Ca-Mg-HCO3 type carbonated (Ca+Mg>Na+K), their weak acids more than strong (HCO3>SO4+Cl). (Ca+Mg)/(SO4+HCO3) ratios indicated effect silicate weathering waters, Cl/(Cl+HCO3) (Na+K)/(Na+K+Ca) chemistry waters controlled chemical rock-forming minerals, hence, reflect water-rock interaction. Except for a few, concentration dissolved potentially toxic elements distributed within acceptable limits. Consequently, results showed category good class terms drinking water.