Environmental Isotope Hydrogeochemical Characteristics and Instructions of Geothermal Water in Xianyang Urban Area

Abstract:

In order to find out the origin of geothermal water in Xianyang urban area and provide scientific basis for sustainable use, taking the geothermal water as study object, we systematically studied supply circulation mechanism of geothermal water in Xianyang urban area through environmental isotope hydrogeochemical methods, and come to the conclusion: geothermal water in Xianyang urban area is bounded by shore fracture of Wei River, which shows totally different hydrogeochemical features. The differences suggests that the geothermal water belongs to different tectonic geology units and sedimentary environment. The distribution characteristics of environmental isotope such as δD、δ18O and 14C confirmed that geothermal water exists contact between the study area and northwest of Wei River. The supply water source of geothermal water comes from the atmospheric precipitation of Holocene in northwest direction, its updating ability is poor except partial deep fault slightly being recharged from modern atmospheric water.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 4161-4164
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.4161
• Online since: May 2012
• Authors: Hua Yan, Zhi Yuan Ma, Ting Li, Guang Liang Niu
• Keywords: Environmental Isotope, Geothermal Water, Hydrogeochemistry, Instruction Meaning, Xianyang Urban Area

References

[1] Giggenbach W F. The Use of Gas Chemistry in Delineating the Origin of Fluids Discharged Over the Taupo Volcanic Zone[J], In Proceedings of 5th International Volcanic Congress, Auck land P〔s. n.〕K,1986,47～50.

[2] Wang Yanxin,Wen Dongguang,Shen Zhaoli etc. Origin of Deep Groundwater and Its Ore Forming Processes[J].Earth Science Frontiers, 1996,3(3~4):274-281. (In Chinese)

[3] Ma Zhiyuan, Qian Hui, Environmental isotope Groundwater Hydrology. Xi'an: Shanxi Science Technology Pressed, 2004. (In Chinese)

[4] Qian Hui,Ma Zhiyuan. Hydrogeochemistry[M].Bei Jing: Geology Pressed,2005. (In Chinese)

[5] Yin Gan. Isotopes Hydrogeochemical[M]. Cheng Du: Chengdu University of Science and Technology Pressed,1988. (In Chinese)

[6] Xianyang Bureau of Land and Resources. Xianyang Urban Geothermal Resources Development and Protection and Development Project[R], Shaanxi Xianyang: Xianyang Geothermal Resources Management Office, 2007. (In Chinese)

DOI: 10.21127/yaoyimr20210002

[7] Xianyang Bureau of Land and Resources. Xianyang Geological Environment Monitoring Stations[R], Shaanxi Xianyang: Xianyang Urban Area Geothermal Water Ddynamic Monitoring Reports. 2005. (In Chinese)

DOI: 10.12980/jad.6.20170407

[8] Peng J B.Wei River Basin Active Faults and Geological Disasters[M], Xi'an: Northwestern University Pressed,1992. (In Chinese)