HYDROCHEMICAL INVESTIGATION OF WATERS IN BIGADIC-HISARKOY (BALIKESIR-TURKEY) GEOTHERMAL AREA

Bigadic - Hisarkoy (Balikesir) Geothermal Area located in Inner West Anatolia and 57 km west of Balikesir. Kretase aged serpentines, diabases, limestones, mudstones, splits, ultrabases and radiolarites consist of ofiolits and these ofiolits formed basement rocks of investigation area. This formation covered by Tertiary aged Dedetepe formation (riodacite, dacite, tuff, agglomerate) and Quaternary aged alluvium and travertine. Investigation area was effected NS directional openings in Lower Miocene - Pliocene in West Anatolia. Faults have NW-SE and NE-SW direction. Hot and mineralized water outflowings throughout these faults. Three zones were determined for geothermal potential in investigation area. First zone is Hisarkoy residential area and surroundings, second zone is municipal hot spring facility surroundings and third zone is NW of investigation area. Bigadic - Hisarkoy area is very important for geothermal energy potential. Hot and mineralized waters are outflowing in intersection of faults which have NW-SE direction. This waters have 10 Us average debits and 24 - 93,5 degrees C temperatures. Total debit of hot water drills in investigation area is 103 l/s and temperature is 24 - 93,5 degrees C. HK-2 drill which spread in Hisarkoy area has 429 m depth, 98 degrees C temperature and 60 l/s debit. HK-3 drill has 307m depth, 98 degrees C temperature and 40 l/s debit with artesian. HK-4 drill has 750 m depth, 57 degrees C temperature and 3 l/s debit with compressor. According to AIH hot and mineralized waters in Bigadic-Hisarkoy geothermal area are named "hot waters include boron, fluorine with sodium, sulphate, chloride". Geothermal fluid can use for heating, spa and commercial growing of greenhouse flowers, vegetables, or fruits