Hydrogeological, hydrogeochemical and isotope geochemical features of the geothermal waters in Urganlı and environs, western Anatolia, Turkey

Özgür N.

Journal of European Federation of Geologists , vol.1, no.1, pp.1-10, 2018 (Peer-Reviewed Journal)

  • Publication Type: Article / Article
  • Volume: 1 Issue: 1
  • Publication Date: 2018
  • Journal Name: Journal of European Federation of Geologists
  • Page Numbers: pp.1-10


The study area is located in the western part of the continental rift zone of the Gediz within the Menderes Massif in western Anatolia and consists of Paleozoic schists, intercalation of carbonate schists, mica schists and phyllites and marbles, Mesozoic carbonate rocks and ophiolites, and Cenozoic sediments such as travertine and alluvium. The impermeable mica schists form the basement rocks in the area hydrogeologically. The Paleozoic marbles form a reservoir for geothermal waters and aquifer for groundwaters especially. The Pliocene to recent rocks play an important role as impermeable cap rocks for the formation of geothermal waters. The geothermal waters in Urganlı, with surface temperatures of 75 °C and reservoir temperatures of 180 °C, can be considered as Na-HCO3 type geothermal waters rather than Ca-Mg-HCO3 type groundwaters. In the area, the geothermal waters were modelled hydrogeologically. The Kula volcano located in the rift zone of Gediz within the Menderes Massif, with a last eruption age up to 18,000 years, might be considered as a heat source for the formation of geothermal waters in the study area.