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

doi:10.1007/s11430-014-4940-2

	Geochemical processes and origin of boron isotopes in geothermal water in the Yunnan-Tibet geothermal zone
	Lu YuanYuan 1; Zheng MianPing 1; Zhao Ping 2; Xu RongHua 3
刊名	SCIENCE CHINA-EARTH SCIENCES
	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
DOI	10.1007/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
出版者	SCIENCE PRESS
WOS记录号	WOS:000346170700008
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)
内容类型	期刊论文
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.