Hydrogeochemical characteristics and genesis of the high-temperature geothermal system in the Tashkorgan basin of the Pamir syntax, western China

doi:10.1016/j.jseaes.2017.06.007

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院页岩气与地质工程重点实验室

	Hydrogeochemical characteristics and genesis of the high-temperature geothermal system in the Tashkorgan basin of the Pamir syntax, western China
	Li, Yiman 1,2; Pang, Zhonghe 1,2; Yang, Fengtian 3; Yuan, Lijuan 4; Tang, Pinghui 5
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2017-11-01
卷号	149 页码:134-144
关键词	Tashkorgan Basin High-temperature Geothermal System Pamir Syntax Geothermal Genesis Hydrogeocehemistry
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2017.06.007
文献子类	Article
英文摘要	High-temperature geothermal systems in China, such as those found in Tenchong and Tibet, are common. A similar system without obvious manifestations found in the Tashkorgan basin in the western Xinjiang Autonomous Region, however, was not expected. The results from borehole measurements and predictions with geothermometers, such as quartz, Na-K and Na-K-Mg, indicate that the reservoir temperature is approximately 250-260 degrees C. Geothermal water is high in Total Dissolved Solids ( > 2.5 g/L) and Si02 content ( > 273 mg/L), and the water type is Cl center dot SO4-Na, likely resulting from water-rock interactions in the granodiorite reservoirs. Based on isotope analysis, it appears to be recharged by local precipitation and river water. Evidence from the relationships between major ions and the Cl and molar Na/Cl ratio suggests mixing between deep geothermal water and shallow cold groundwater during the upwelling process. Mixing ratios calculated by the relationship between Cl and SiO2 show that the proportion from cold end-members are 96-99% and 40-90% for riparian zone springs and geothermal water from boreholes, respectively. Active regional tectonic and Neo-tectonic movements in the Pamir syntax as well as radioactive elements in the granodiorite reservoir of the Himalayan stage provide basis for the high heat flow background (150-350 mW/m(2)). NNW trending fault systems intersecting with overlying NE faults provide circulation conduits with high permeability for geothermal water.
WOS关键词	FLUID GEOCHEMISTRY ; AREA ; SLIP ; CHEMISTRY ; EVOLUTION ; TURKEY ; WATER ; SHAN
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000414883300014
资助机构	National Natural Science Foundation of China (NSFC)(41430319) ; National Natural Science Foundation of China (NSFC)(41430319) ; National Natural Science Foundation of China (NSFC)(41430319) ; National Natural Science Foundation of China (NSFC)(41430319)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62491]
专题	地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者	Pang, Zhonghe
作者单位	1.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.Jilin Univ, Coll Environm & Resources, Changchun 130021, Jilin, Peoples R China 4.Beijing Geothermal Res Inst, Beijing 100039, Peoples R China 5.Xinjiang Geol & Mineral Bur, Hydrol & Engn Geol Inst 2, Changji 831100, Peoples R China
推荐引用方式 GB/T 7714	Li, Yiman,Pang, Zhonghe,Yang, Fengtian,et al. Hydrogeochemical characteristics and genesis of the high-temperature geothermal system in the Tashkorgan basin of the Pamir syntax, western China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2017,149:134-144.
APA	Li, Yiman,Pang, Zhonghe,Yang, Fengtian,Yuan, Lijuan,&Tang, Pinghui.(2017).Hydrogeochemical characteristics and genesis of the high-temperature geothermal system in the Tashkorgan basin of the Pamir syntax, western China.JOURNAL OF ASIAN EARTH SCIENCES,149,134-144.
MLA	Li, Yiman,et al."Hydrogeochemical characteristics and genesis of the high-temperature geothermal system in the Tashkorgan basin of the Pamir syntax, western China".JOURNAL OF ASIAN EARTH SCIENCES 149(2017):134-144.