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The deep geothermal structure of high-temperature hydrothermal activity region in western Sichuan Plateau : a geophysical study
Li WuYang1,2; Zhang Jian1,2; Tang XianChun1,2; Tian Jiao3; Wang YingChun3; Guo Qi3
2018-07-01
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume61Issue:7Pages:2926-2936
AbstractThe 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.
KeywordThe Western Sichuan Plateau Deep geothermal structure Curie point depth Moho Aeromagnetic Gravity Seismic velocity
DOI10.6038/cjg2018L0043
WOS KeywordEASTERN TIBETAN PLATEAU ; CURIE-POINT DEPTH ; GARZE FOLD BELT ; TRIASSIC GRANITOIDS ; HEAT-FLOW ; CONTINENTAL AREA ; YUNNAN REGION ; FAULT ZONE ; CHINA ; DEFORMATION
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000438837800022
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/94008
Collection页岩气与地质工程院重点实验室
Corresponding AuthorZhang Jian
Affiliation1.Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
Recommended Citation
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.
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