气候变化领域集成服务门户(CCPortal): Deep structure and geothermal resource effects of the Gonghe basin revealed by 3D magnetotelluric

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DOI	10.1186/s40517-024-00281-x
	Deep structure and geothermal resource effects of the Gonghe basin revealed by 3D magnetotelluric
	Yang, Yi; Zhang, Jie; Wang, Xingchun; Liang, Mingxing; Li, Dewei; Liang, Meng; Ou, Yang; Jia, Dingyu; Tang, Xianchun; Li, Xufeng
发表日期	2024
ISSN	2195-9706
起始页码	12
结束页码	1
卷号	12 期号:1
英文摘要	In order to better understand the crustal shortening and orogenic uplift in the northeastern margin of the Tibetan Plateau, as well as the geothermal resource effects formed during this process, we used ModEM software to perform 3D MT imaging on broadband magnetotelluric survey points deployed at 710 points in the Gonghe Basin and its surrounding areas. The resistivity model suggests that the Gonghe Basin exhibits a low-high-low overall electrical structure, with high conductivity widely distributed in the middle and lower crust. The resistivity model also reveals a significant discontinuity between high and low resistivity blocks at various depths in the upper and middle crust. These discontinuities are align with the faults observed on the surface related to strong crustal fluctuations, which are connected to high conductors in the middle and upper crust. Using empirical formulas for high-temperature and high-pressure testing of granite, it is estimated that the melting volume of these high conductors ranges from 3 to 43%, demonstrating good plasticity. These high conductors can act as detachment layers for crustal shortening and deformation during the expansion of the Tibetan Plateau towards the northeast edge and can continuously conduct heat energy upwards, creating a high thermal background in the Gonghe Basin.
英文关键词	Tibetan Plateau; Gonghe Basin; Magnetotelluric; 3D inversion; Melting; Structure; Geothermal
语种	英语
WOS研究方向	Energy & Fuels ; Geology
WOS类目	Energy & Fuels ; Geosciences, Multidisciplinary
WOS记录号	WOS:001162481100001
来源期刊	GEOTHERMAL ENERGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296325
作者单位	China Geological Survey; Institute of Geophysical & Geochemical Exploration, Chinese Academy of Geological Sciences; Chengdu University of Technology; Ministry of Natural Resources of the People's Republic of China; China Geological Survey; Chinese Academy of Geological Sciences
推荐引用方式 GB/T 7714	Yang, Yi,Zhang, Jie,Wang, Xingchun,et al. Deep structure and geothermal resource effects of the Gonghe basin revealed by 3D magnetotelluric[J],2024,12(1).
APA	Yang, Yi.,Zhang, Jie.,Wang, Xingchun.,Liang, Mingxing.,Li, Dewei.,...&Li, Xufeng.(2024).Deep structure and geothermal resource effects of the Gonghe basin revealed by 3D magnetotelluric.GEOTHERMAL ENERGY,12(1).
MLA	Yang, Yi,et al."Deep structure and geothermal resource effects of the Gonghe basin revealed by 3D magnetotelluric".GEOTHERMAL ENERGY 12.1(2024).