Geological Characteristics of Geothermal Fields in Heze Area of Shandong Province

Geothermal resource is very rich in Heze geothermal field.Geological tectonic conditions,geothermal reservoirs are relatively favorable for exploiting geotherm.Regional geological structures are mainly composed of Liaokao fault and Caoxian fault.Geothermal reservoir was divided into two major double-decker structure,the upper part is Neogene pore-fractured geothermal reservoir,while the lower part is the Ordovician carbonate fractured karst geothermal reservoir.Underground geotherm was formed in 50 years ago.The contents of fluoride in water and pianguisuan can reach the degree for naming as mineral water.The geotherm also contains some useful mineral elements,such as F-,H 2 SiO 3,HBO 2 and Li.Thus,it can be used in heating and bathing as well.