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DOI	10.1016/j.jhydrol.2024.130776
	Origins of volatiles and helium fluxes from hydrothermal systems in the Eastern Himalayan Syntaxis and constraints on regional heat and tectonic activities
	Li, Yiman; Zhou, Xiaocheng; Huang, Tianming; Tian, Jiao; He, Miao; Zhu, Xiaoyi; Li, Jiang; Zhang, Yongxian; Wu, Zhongliang; Li, Bin; Yan, Yucong; Wang, Yuwen; Yao, Bingyu; Zeng, Zhaojun; Xing, Gaoyuan; Cui, Shihan
发表日期	2024
ISSN	0022-1694
EISSN	1879-2707
起始页码	631
卷号	631
英文摘要	While understanding the origins of volatiles has strong implications on heat and tectonic processes, the relationship has not well understood, especially in the Eastern Himalayan Syntaxis (EHS) in the Tibetan Plateau, where tectonic framework, petrologic properties, stress field, and geomorphic water system changes greatly due to the strongest continental collision. Based on samples from warm/hot springs in the EHS, geothermal fluid is sourced from local precipitation and simultaneously recharged by deeply -sourced mantle volatiles. Volatiles from hydrothermal systems are mixture of crustal and mantle origin, in which helium is mainly from radiogenic production in the crust with only up to 7.52% is mantle derived whereas CO2 is mainly constrained by both decarbonization of Tethyan marine carbonate rocks and mantle volatiles. The helium fluxes are estimated to be almost 1-2 orders higher than some representative volcanically and tectonically active continental regions. The He-CO2 system is dominantly constrained by the regional magmatic intrusions and hydrothermal degassing process. The boundary of the Indian plate underplating beneath Tibet is extended eastward to across the EHS by evidences from He isotope and this boundary is probably the south boundary of the EHS. Differences of helium isotopes between the EHS and its southeastern region indicate the contrasting slab subduction style in the deep structure. These results present some quantitative constraints for the interpretations of regional tectonic processes on transportation of deeply -sourced volatiles and its indications on continental collision style and present essential basis for understanding volatiles degassing and cycling in the continental collision settings.
英文关键词	Hydrothermal system; Volatiles; Eastern Himalayan syntaxis; Tibet Plateau; 3He/4He
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:001180639000001
来源期刊	JOURNAL OF HYDROLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308682
作者单位	Chinese Academy of Sciences; Institute of Geology & Geophysics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; China Earthquake Administration; Institute of Earthquake Forecasting, CEA; China University of Geosciences
推荐引用方式 GB/T 7714	Li, Yiman,Zhou, Xiaocheng,Huang, Tianming,et al. Origins of volatiles and helium fluxes from hydrothermal systems in the Eastern Himalayan Syntaxis and constraints on regional heat and tectonic activities[J],2024,631.
APA	Li, Yiman.,Zhou, Xiaocheng.,Huang, Tianming.,Tian, Jiao.,He, Miao.,...&Cui, Shihan.(2024).Origins of volatiles and helium fluxes from hydrothermal systems in the Eastern Himalayan Syntaxis and constraints on regional heat and tectonic activities.JOURNAL OF HYDROLOGY,631.
MLA	Li, Yiman,et al."Origins of volatiles and helium fluxes from hydrothermal systems in the Eastern Himalayan Syntaxis and constraints on regional heat and tectonic activities".JOURNAL OF HYDROLOGY 631(2024).