Earth Science Frontiers ›› 2009, Vol. 16 ›› Issue (2): 384-395.

• Article • Previous Articles     Next Articles

 Analysis of geochemical characteristics and formation age of geothermal fluid deposited in Beiyuan Jiayuan to Beijing Olympic Park Area.

  

  1. 1Non-Ferrous Metal Mineral Resources Geology Survey Center, Beijing 100012, China
    2Geological Survey and Research Institute of Beijing, Beijing  102206, China
    3Geological Prospect Technology Institute of Beijing, Beijing  102218, China

  • Online:2009-03-02 Published:2009-03-02

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Abstract:

 Beijing Olympic Park Area is a newly discovered geothermal resource area in Beijing. Based on the geochemistry, HO isotopes, tritium isotopes and 14C dating data of the geothermal fluid and combining the geothermal geology background, we have studied the characteristics and the formation mechanism of the geothermal fluid in this area. The major hydrochemical type of the geothermal fluid is the type of HCO-3SO2-4Cl-Na+, and the minor one is HCO-3NO-3Ca2+Mg2+ type. The geothermal fluid was not supplied by the meteoric water and the runoff of the geothermal water is controlled by the regional fault system. The geothermal water is a mixed type of geothermal water between original geothermal water and deep cold underground water, and the original geothermal water was formed in 2000030000 a B.P. This area holds a big potential for geothermal water supply.

Key words:

geothermal water; geochemical characteristics; formation mechanism; Beijing

CLC Number: