Evaluation of Geological, Hydrogeological and Hydrogeochemical Studies to Construct a Conceptual Hydrothermal Model of the Haruniye-Duzici (Osmaniye)

Abstract

The main purpose of this study is evaluation of geological, hydrogeological and hydrogeochemical studies to construct conceptual hydrothermal model of the Haruniye low temperature (30-32 ?C) geothermal field located in Osmaniye province in Southern Turkey. The thermal springs have been used for health and touristic purposes since historical times. But they have been contaminated due to ancient and unplanned casually settlements around the thermal facilities. The basement rock in the area comprised from intensively karstified Triassic aged Sulucadere Formation Jurassic aged Berke Complex overlies this basement. Quaternary alluviums, travertines and slope debris are the youngest units in the area. Sulucadere Formation and Berke Complex are the main reservoir formations in the area. Ionic characteristics of the geothermal springs generally are Ca>Mg>Na+K and HCO3>SO4>Cl. Geothermometrical calculations applied to Haruniye thermal springs representing reservoir reveals 33-34 ?C respectively. According to these studies, protection zones have been determined by evaluation of contamination sources and conceptual hydrothermal model of the geothermal field has been constructed.