The Hydro-Geo-Chemical Features of Geothermal Water in the Area of Julijev park in Daruvar

Daruvarske toplice se nalaze u dolini riječice Toplice, između zapadnih obronaka Papuka i „Ilovske depresije“. Pojava termalne vode uvjetovana je geološkom građom i tektonskim odnosima ovog područja. Termalna voda izbija iz trijaskih vapnenaca i dolomita koji se nalaze ispod nevezanog nanosa vodotoka Toplice na području Julijevog parka u središtu Daruvara. Za potrebe određivanja svojstva i geneze geotermalne vode uzeti su uzorci geotermalne vode iz bušotine D-1, izvora Antunovog vrela, Ivanovog vrela, Turske kupelji, šahtova Š-1 i Š-3 te kopanog zdenca HZ. Prema fizikalnim, fizikalno-kemijskim i kemijskim pokazateljima geotermalna voda na području Julijevog parka pokazuje odlična balneološka svojstva. Izotopni pokazatelji ukazuju na veliku starost vode u vodonosniku te na nepostojanje obnavljanja vodonosnika recent-nim padalinama, odnosno to je obnavljanje vrlo polagano i dugotrajno.The Daruvar thermal resort is located in the Toplica river valley, in between the western hillsides of Papuk and the “Ilova depression”. The probability for the occurrence of thermal water depends upon the geological built of this area and the tectonic situation in it. Thermal water springs from Triassic limestone and the dolomites that are located underneath the alluvia of the Toplica river flow in the area of Julijev park in the centre of Daruvar. In order to define the qualities and genesis of geothermal water, samples of geothermal water were taken from the D-1 well, Antun’s spring, Ivan’s spring, the Turkish bath, the Š-1 and Š-3 manholes and the HZ draw-well. According to physical, physico-chemical and chemical indicators, geothermal water in the area of Julijev park has excellent balneological qualities. The isotope indicators show the considerable age of water in the water tank and the lack of recent precipitation in the water tank, or rather the renewal of precipitation is very slow and lasts long