IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
Fluid geochemistry of the Cuopu high temperature geothermal system in the eastern Himalayan syntaxis with implication on its genesis
Tian, Jiao1,2,3; Pang, Zhonghe1,2,3; Wang, Yingchun1,2,3; Guo, Qi4
2019-11-01
Source PublicationAPPLIED GEOCHEMISTRY
ISSN0883-2927
Volume110Pages:13
AbstractHigh-temperature geothermal fluids dissolve constituents pertinent to water-rock interaction and magmatic volatile absorption, resulting in high total dissolved solid (TDS) values. However, this study focuses on the hydrochemical evolution of the low-salinity HCO3-Na type high-temperature geothermal fluid in Cuopu, eastern Himalayas. The geothermal water is recharged by local precipitation and glacier water from surrounding mountains. The TDS values are below 834 mg/L and the constituents are mainly products of the water-carbon dioxide-rock interactions lacking magmatic volatile dissolved in the fluid. The geothermal water reaches an almost complete chemical equilibrium with the feldspar or plagioclase-enriched reservoir rock in a reducing condition. The reservoir temperature is between 175 degrees C-200 degrees C, while the temperature could reach up to 400 degrees C in the deep crustas indicated by the carbon isotopic exchange equilibrium between CO2 and CH4. The infiltrated glacier water was heated during its circulation within the hot thickened crust and continued dissolving the crustal metamorphic gas, such as radiogenic helium and limestone metamorphic CO2, until the junction of the two sets of faults provided an ascending channel for it. Upon rising along the conduit, the geothermal water mixed with cold groundwater to different degrees. Approximately 0.015 mol/L CO2 escaped from the geothermal fluid when it scattered as bubbling hot springs on the surface of the anisotropic porous Quaternary sediments. Such kind ofhydrochemical evolution of lowsalinity alkaline HCO3-Na type water represents a typical formation mechanism of the high-temperature geothermal systems along the Himalayas.
KeywordLow-salinity high-temperature geothermal system HCO3-Na type water Hydrochemical evolution Reservoir temperature Eastern himalayas
DOI10.1016/j.apgeochem.2019.104422
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation
WOS KeywordRARE-EARTH-ELEMENTS ; LITANG FAULT ZONE ; HYDROTHERMAL FLUIDS ; TRACE-ELEMENTS ; WATERS ; CARBON ; TIBET ; SR ; FRACTIONATION ; GAS
Language英语
Funding ProjectNational Natural Science Foundation of China[41430319] ; China Postdoctoral Science Foundation[2018M641471]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000494711200005
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95748
Collection页岩气与地质工程院重点实验室
Corresponding AuthorPang, Zhonghe
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.China Minmet Corp, Beijing 10010, Peoples R China
First Author AffilicationKey Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Tian, Jiao,Pang, Zhonghe,Wang, Yingchun,et al. Fluid geochemistry of the Cuopu high temperature geothermal system in the eastern Himalayan syntaxis with implication on its genesis[J]. APPLIED GEOCHEMISTRY,2019,110:13.
APA Tian, Jiao,Pang, Zhonghe,Wang, Yingchun,&Guo, Qi.(2019).Fluid geochemistry of the Cuopu high temperature geothermal system in the eastern Himalayan syntaxis with implication on its genesis.APPLIED GEOCHEMISTRY,110,13.
MLA Tian, Jiao,et al."Fluid geochemistry of the Cuopu high temperature geothermal system in the eastern Himalayan syntaxis with implication on its genesis".APPLIED GEOCHEMISTRY 110(2019):13.
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