Hydrogeochemical features and origin of geothermal water of carbonate rocks in the NE Guanzhong Basin, China

Abstract

A great number of geothermal waters in carbonate rocks are located in the NE Guanzhong Basin. Hydrogeochemical features and genesis of geothermal waters in carbonate rocks were investigated by hydrogeochemical and statistical methods. The results show that the geothermal water in carbonate rocks is basically fresh water with the dominant water type of Na-HCO3. The hydrogeochemistry of geothermal water is governed by water-rock interaction, and the reservoir environment of geothermal water is open. The origin of geothermal water can be the atmospheric infiltration water. This study is aimed to provide the scientific basis for the sustainable development and utilization of geothermal waters of carbonate rocks in Guanzhong Basin.