The deep geothermal structure of high-temperature hydrothermal activity region in western Sichuan Plateau : a geophysical study

doi:10.6038/cjg2018L0043

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

	The deep geothermal structure of high-temperature hydrothermal activity region in western Sichuan Plateau : a geophysical study
	Li WuYang 2,3; Zhang Jian 2,3; Tang XianChun 2,3; Tian Jiao 1; Wang YingChun 1; Guo Qi 1
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2018-07-01
卷号	61 期号:7 页码:2926-2936
关键词	The Western Sichuan Plateau Deep geothermal structure Curie point depth Moho Aeromagnetic Gravity Seismic velocity
ISSN号	0001-5733
DOI	10.6038/cjg2018L0043
英文摘要	The high-temperature hydrothermal activity region in the Western Sichuan Plateau is located in the northeast margin of the eastern syntaxis of the Tibetan Plateau. This area is the easternmost part of the Mediterranean-Himalayan geothermal belt, and also a notable region of geothermal research. The hot springs in this region are distributed extensively along the Jinshajiang fault, Dege-Xiangcheng fault, Garze-Litang fault and Xianshuihe fault, forming the NW-SE strip-like high-temperature hydrothermal activity area. The geothermal analysis of this high temperature hydrothermal activity area is an important foundation for studying the deep geodynamics process of the eastern syntaxis of the Tibetan Plateau, which also contributes to exploiting and utilizing the geothermal resources in the western Sichuan Plateau. In this paper, we compare the crust-mantle thermal structure acquired from the helium isotopes measurement with geophysical results of the aeromagnetic, gravity data and shear wave data. The Moho and Curie point depth is obtained by inversion. Besides, the deep geothermal structure and geophysical background are discussed in the typical anomaly area of Batang, Litang and Kangding. The result shows that the helium isotope heat flux of the surface is in accord with the geophysical anomalies. The thermal contribution of crust and mantle in the Western Sichuan Plateau is relatively close : the average Q(c)/Q is 51. 38% in Batang, 54. 39% in the Litang area, and 42. 42% in the Kangding area. The thermal structure pattern in this region tends to be a "warm crust-warm mantle" mode. The formation of high surface heat flux in the warm crust background need to be further studied.
WOS关键词	EASTERN TIBETAN PLATEAU ; CURIE-POINT DEPTH ; GARZE FOLD BELT ; TRIASSIC GRANITOIDS ; HEAT-FLOW ; CONTINENTAL AREA ; YUNNAN REGION ; FAULT ZONE ; CHINA ; DEFORMATION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000438837800022
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/94008]
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	Zhang Jian
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li WuYang,Zhang Jian,Tang XianChun,et al. The deep geothermal structure of high-temperature hydrothermal activity region in western Sichuan Plateau : a geophysical study[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(7):2926-2936.
APA	Li WuYang,Zhang Jian,Tang XianChun,Tian Jiao,Wang YingChun,&Guo Qi.(2018).The deep geothermal structure of high-temperature hydrothermal activity region in western Sichuan Plateau : a geophysical study.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(7),2926-2936.
MLA	Li WuYang,et al."The deep geothermal structure of high-temperature hydrothermal activity region in western Sichuan Plateau : a geophysical study".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.7(2018):2926-2936.