The eastern Tibetan Plateau geothermal belt, western China: Geology, geophysics, genesis, and hydrothermal system

doi:10.1016/j.tecto.2017.08.035

	The eastern Tibetan Plateau geothermal belt, western China: Geology, geophysics, genesis, and hydrothermal system
	Tang, Xianchun 1,2,3; Zhang, Jian 1; Pang, Zhonghe 1,2; Hu, Shengbiao 1,2; Tian, Jiao 2; Bao, Shujing 3
刊名	TECTONOPHYSICS
	2017-10-16
卷号	717 页码:433-448
关键词	Eastern Tibetan Plateau Geothermal Belt Helium Isotope Gravity Inversion s Wave Velocity Inversion Crust-mantle Thermal Structure Heat Flux
ISSN号	0040-1951
DOI	10.1016/j.tecto.2017.08.035
文献子类	Article
英文摘要	The eastern Tibetan Plateau geothermal belt (ETGB), which is located in 98-102 degrees E, 28-32 degrees N, belongs to the eastern part of the Mediterranean-Himalayan geothermal belt. Recently, about 248 natural hot springs have been found in the ETGB. > 60% of these springs have temperatures of > 40 degrees C, and 11 springs have temperature above the local water boiling point. Using the helium isotopic data, gravity, magnetic and seismic data, we analyzed the thermal structure and the relationship between hydrothermal activity and geothermal dynamics of the ETGB. Results show that: (1) the 248 springs can be divided into three geothermal fields: Kangding-Luhuo geothermal field (KGF), Litang-Ganzi geothermal field (LGF) and Batang-Xiangcheng geothermal field (BGF). The BGF and LGF have hot crust and warm mantle, and are characterized by the higher heat flux (66.26 mW/m(2)), and higher ratios of crust-derived heat flux to total flux (47.46-60.62%). The KGF has cool crust and hot mantle, and is characterized by the higher heat flux and lower Q(c)/Q(m); (2) there is a relatively 4-6 m higher gravimetric geoid anomaly dome which is corresponding with the ETGB. And in hydrothermal activity areas of the BGF and LGF, there is a northwest - southeast-trending tensile stress area and the upper-middle crust uplift area; (3) an abnormal layer exists in the middle-lower crust at a depth of 13-30 km beneath the ETGB, and this layer is 8-10 km thick and is characterized by lower velocity (V-p < 5.8 km/s, V-s < 3.2 km/s), high Poisson's ratio (> 2.5), high conductivity (similar to 10 Omega.m ) and high temperature (850-1000 degrees C). Finally, based on the heat source and geological and geophysical background, we propose Kangding-type and Batang-type hydrothermal system models in the ETGB.
WOS关键词	GARZE FOLD BELT ; MESOZOIC TECTONIC EVOLUTION ; XIANSHUIHE FAULT ZONE ; SONGPAN-GANZI FLYSCH ; HEAT-FLOW DATA ; CONTINENTAL AREA ; NORTHERN TIBET ; TRIASSIC GRANITOIDS ; MANTLE TEMPERATURES ; CENTRAL QIANGTANG
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000414879200031
资助机构	National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; 41574074 ; 41574074 ; 41574074 ; 41574074 ; 41430319) ; 41430319) ; 41430319) ; 41430319) ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; 41574074 ; 41574074 ; 41574074 ; 41574074 ; 41430319) ; 41430319) ; 41430319) ; 41430319) ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; 41574074 ; 41574074 ; 41574074 ; 41574074 ; 41430319) ; 41430319) ; 41430319) ; 41430319) ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; National Science Foundation of China(41602257 ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; China Postdoctoral Science Foundation(2016M591236) ; 41574074 ; 41574074 ; 41574074 ; 41574074 ; 41430319) ; 41430319) ; 41430319) ; 41430319)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82162]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang, Jian
作者单位	1.Univ Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Chinese Acad Geol Sci, SinoProbe Ctr, Beijing 100030, Peoples R China
推荐引用方式 GB/T 7714	Tang, Xianchun,Zhang, Jian,Pang, Zhonghe,et al. The eastern Tibetan Plateau geothermal belt, western China: Geology, geophysics, genesis, and hydrothermal system[J]. TECTONOPHYSICS,2017,717:433-448.
APA	Tang, Xianchun,Zhang, Jian,Pang, Zhonghe,Hu, Shengbiao,Tian, Jiao,&Bao, Shujing.(2017).The eastern Tibetan Plateau geothermal belt, western China: Geology, geophysics, genesis, and hydrothermal system.TECTONOPHYSICS,717,433-448.
MLA	Tang, Xianchun,et al."The eastern Tibetan Plateau geothermal belt, western China: Geology, geophysics, genesis, and hydrothermal system".TECTONOPHYSICS 717(2017):433-448.