Geochemical characteristics and thermal storage geothermometer application of geothermal water in Chengde area,Hebei
The article has studied the geochemical characteristics of geothermal water by hydrochemical analy-sis,characteristic coefficient and isotope analysis methods in Chengde area of Heibei Province.The result shows that the geothermal water is slightly saline and alkaline,chemical type of geothermal water is mainly Na-SO4-HCO3,and special components are rich in geothermal water,such as F and SiO2.The characteristic coefficient of geothermal water indicates that geothermal water is influenced by shallow or surface water,with poor sealing condition,incomplete reduction,and low concentration of formation water.The hydrogen and oxygen isotope characteristics of geothermal water indicate that the main source of replenishment is at-mospheric rainfall.According to Na-K-Mg triangle diagram,most of the water sample points are located at a partially equilibrium zone,with a thermal storage temperature of 94-158℃,belonging to a low-medium tem-perature hydrothermal resource.
geothermal watergeochemical characteristicsthermal storage temperaturehydrgen-oxygen i-sotopesChengde area of Hebe
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