Hydrogeochemistry and Geothermometer Applications to Afyonkarahisar Geothermal Fields

25442

The geothermal fields of Afyonkarahisar differ from each other with respect to their temperature and the chemical composition. Ömer-Gecek, Gazlıgöl, Heybeli and Sandıklı geothermal fields are classified as Na-Cl-HCO_3, Na-HCO_3, Na-Ca-HCO_3-SO_4 and Na-Ca-SO_4-HCO_3 type waters, respectively. The concentrations of As (except Gazlıgöl), B and F in all fields are above the recommended standard values. The Na and Cl concentrations in Ömer-Gecek geothermal waters are the highest compared to other regions. In Comparison with other regions, Gazlıgöl field has high HCO_3 and low SO_4 concentrations. Generally, geothermal waters of Ömer-Gecek are of deep origin, while that of Gazlıgöl, Sandıklı and Heybeli are of shallow origin and mixed with groundwater. The geothermal waters of Ömer-Gecek are close to the partial equilibrium region. Geothermal waters of Gazlıgöl, Sandıklı and Heybeli region plotted in the immature waters field. Among the chemical geothermometers applied to Afyonkarahisar geothermal fields, quartz geothermometers gave the most appropriate result. According to these calculations, Ömer-Gecek, Gazlıgöl, Sandıklı and Heybeli waters have reservoir temperatures ranging between 130-147 °C, 104-119 °C, 100-120 °C and 74-91 °C, respectively.

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Afyonkarahisar , Ömer , Gecek , Gazlıgöl , Sandıklı , Heybeli , Hydrogeochemistry , Geothermometer.

Journal Of Natural an‎d Applied Sciences

77

Journal Of Natural an‎d Applied Sciences