Chemical characteristics and isotope analysis of geothermal water in Fuyang area

In order to study the control function of geothermal formation mechanism of in Fuyang area, this paper analyzes the hydrochemical characteristics of geothermal water on the basis of the existing data of exploration wells and geothermal and geological conditions. And the characteristics of vertical and horizontal distribution of geothermal fluids were obtained. The authors also revealed that there was thermal storage in the weathering shells of Archaean Wuhe Group and it had lower total dissolved solids (TDS), which was different from common thermal storage of Neogene Guantao Group and Paleogene Jieshou Group. At the same time, the stable isotope data of atmospheric water and geothermal water indicate that atmospheric water is the main source of geothermal water in the research area and that the high TDS geothermal fluid was formed by the lateral runoff supply and evaporation/concentration of atmospheric water. The geothermal water radio-isotopes were also used to estimate the age of geothermal water. The conceptual model for the formation of geothermal resources was established through the study of geothermal water chemistry, isotope and heat control structure, which could provide some guidance for the development and utilization of geothermal resources in this area.