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Geochemical processes and origin of boron isotopes in geothermal water in the Yunnan-Tibet geothermal zone

文献类型：期刊论文

作者Lu YuanYuan1; Zheng MianPing1; Zhao Ping2; Xu RongHua3
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2014-12-01
卷号57期号:12页码:2934-2944
关键词Yunnan-Tibet geothermal zone Boron isotope geothermal water tracing
ISSN号1674-7313
DOI10.1007/s11430-014-4940-2
文献子类Article
英文摘要Boron concentrations and isotope compositions have been measured for 93 water samples from the hot springs and drill-holes in the geothermal system in the Yunnan-Tibet Geothermal Belt (YTGB), China. Boron concentrations range from 0.036-472.4 ppm, and the delta B-11 values range from -16.0aEuro degrees to 13.1aEuro degrees, indicating the non-marine origin for each geothermal system. We observed a clear binary mixing relationship between the B concentrations and B isotope compositions in Tibet geothermal area. This relationship can be well explained by two sources, i.e., marine carbonate rocks and magmatic rocks, for the Tibet geothermal water. No evidence supports a mantle contribution to B. In addition, we found that the precipitation only plays a dilution role for B of geothermal waters. delta B-11 values for the precipitation across the southern Tibetan Plateau area range from -6.0aEuro degrees to -6.8aEuro degrees at least. Due to data scarcity in Yunnan geothermal area, we observed possible different boron sources from the Tibet geothermal system. Comparing it with other geothermal systems in the world, we found that the samples from YTGB have the lowest delta B-11 values and the largest range of B concentration, which might be related to their special geological background. On the whole, the world geothermal delta B-11-Cl/B relation suggests a mixing process between marine and non-marine sources. Additionally, we suggest that B source of B-enriched geothermal waters is mainly from B-enriched crustal country-rocks, instead of mantle.
WOS关键词NATURAL HYDROTHERMAL SYSTEMS ; IONIZATION MASS-SPECTROMETRY ; HOT-SPRING WATERS ; SOUTHERN TIBET ; NEW-ZEALAND ; THERMAL WATERS ; CHINA ; FRACTIONATION ; CONSTRAINTS ; HELIUM
WOS研究方向Geology
语种英语
WOS记录号WOS:000346170700008
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China(41203012 ; National Natural Science Foundation of China(41203012 ; China Geological Survey(1212011085524) ; China Geological Survey(1212011085524) ; 41030317) ; 41030317) ; National Natural Science Foundation of China(41203012 ; National Natural Science Foundation of China(41203012 ; China Geological Survey(1212011085524) ; China Geological Survey(1212011085524) ; 41030317) ; 41030317) ; National Natural Science Foundation of China(41203012 ; National Natural Science Foundation of China(41203012 ; China Geological Survey(1212011085524) ; China Geological Survey(1212011085524) ; 41030317) ; 41030317) ; National Natural Science Foundation of China(41203012 ; National Natural Science Foundation of China(41203012 ; China Geological Survey(1212011085524) ; China Geological Survey(1212011085524) ; 41030317) ; 41030317)
源URL[http://ir.iggcas.ac.cn/handle/132A11/85665]  
专题中国科学院地质与地球物理研究所
通讯作者Lu YuanYuan
作者单位1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Saline Lake Resources & Environm, Beijing 100037, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Lu YuanYuan,Zheng MianPing,Zhao Ping,et al. Geochemical processes and origin of boron isotopes in geothermal water in the Yunnan-Tibet geothermal zone[J]. SCIENCE CHINA-EARTH SCIENCES,2014,57(12):2934-2944.
APA Lu YuanYuan,Zheng MianPing,Zhao Ping,&Xu RongHua.(2014).Geochemical processes and origin of boron isotopes in geothermal water in the Yunnan-Tibet geothermal zone.SCIENCE CHINA-EARTH SCIENCES,57(12),2934-2944.
MLA Lu YuanYuan,et al."Geochemical processes and origin of boron isotopes in geothermal water in the Yunnan-Tibet geothermal zone".SCIENCE CHINA-EARTH SCIENCES 57.12(2014):2934-2944.

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来源：地质与地球物理研究所

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