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Bahattin Cetindag ¹, Nail Unsal ²

Affiliations
1 Firat University, Geological Engineering Deparment, Elazig, TR
2 Gazi University, Civil Eng., Dept., 06570 Maltepe, Ankara, TR

Abstract

The study area is located to the west of Elazig, in southeastern Turkey. Hydrochemical evolution of the groundwater is related to the flow path of groundwater. The groundwater in the unconfined aquifer may be classified in terms of Ca-Mg--HCO₃, hydrochemical facies characterised by shallow (young) waters which dominate the recharge areas during rapid flow conditions. Ionic concentrations, TDS, EC and water quality are related to groundwater residence time and groundwater types. The groundwaters in the plain are chemically potable and suitable for both domestic and agricultural purposes.

Keywords

Hydrogeochemistry, Unconfined aquifer, Water quality, Elazig, Turkey.

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Nail Unsal ¹, Mehmet Qelik ², Atilla M. Murathan ³

Affiliations
1 Gazi University, Civil Eng. Dept., Maltepe 06570 Ankara, TR
2 Ankara University, Geol. Eng. Dept., Tandogan 06100 Ankara, TR
3 Gazi University, Chemical Eng. Dept., Maltepe 06570 Ankara, TR

Abstract

The main objective of this study is to determine the chemical and isotopic properties and reservoir temperature of mineralized thermal waters of Kir§ehir region, Turkey. Areas which have been included in this study are Savcih, Karakurt, Terme, Bulamach ,and Mahmutlu.

Mahmutlu and Bulamach waters are mainly of the Na-Cl type, Savcih waters are of the Na-HCOyCl type and Karakurt and Terme waters are mainly of the Ca-HC0₃ type. The saturation index values of the waters have been evaluated and mineralized thermal waters were found to be saturated with respect to the calcite and dolomite minerals but undersaturated with respect to the halite mineral in spite of being NaCl type. The results of hydrochemical and environmental isotope (¹⁸0, D, ³H) analyses show that the waters are of meteoric origin and have varying component of relatively old water. The reservoir temperature of the five areas of thermal manifestations fall between 50 and 100°C. Highest temperatures of about 100°C have been estimated for Bulamach and Mahmutlu using various chalcedony geothermometers. Mahmutlu mineralized thermal water has longer residence times and higher reservoir temperature compared to other geothermal areas in Kir§ehir Province.

Keywords

Hydrochemistry, Isotopes, Mineralized thermal waters, Hydrochemical facies, Kirsehir Province, Turkey.

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