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Pyroxenite-harzburgite sequences in the Dazhuqu ophiolite (Southern Tibet) formed through hydrous melt infiltration and melt-peridotite reaction

文献类型：期刊论文

作者Zhang, Zhen-Yu1; Liu, Chuan-Zhou1,2; Liang, Yan3; Liu, Tong1; Zhang, Chang1; Liu, Bo-Da1; Lin, Yin-Zheng1,2; Zhang, Wei-Qi1; Ji, Wen-Bin4
刊名CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
出版日期2023-12-01
卷号178期号:12页码:30
关键词Pyroxenite Melt-rock reaction Hydrous melt infiltration The Yarlung-Tsangbo ophiolites Concentration gradient
ISSN号0010-7999
DOI10.1007/s00410-023-02076-y
英文摘要Pyroxenite veins are commonly observed in the mantle section of ophiolites, reflecting a variety of melts that percolate through the mantle, react, and finally crystallize in the lithosphere. To better understand the formation mechanism of the pyroxenite veins and associated peridotites, we conducted an integrated petrological and geochemical study of a suite of orthopyroxenite, websterite, and composite clinopyroxenite-orthopyroxenite veins in residual peridotites from the Dazhuqu ophiolite (Southern Tibet, China). Both orthopyroxene and clinopyroxene in pyroxenites are characterized by high Mg#, low Al2O3 concentrations, and depleted patterns of incompatible trace elements. This suggests that parental melts of the pyroxenites could be formed by re-melting of a previously depleted mantle source. We observed systematic variations in the major and trace element compositions of clinopyroxene and orthopyroxene across the pyroxenite-harzburgite sequences. Through trace element modeling, we have established a model for the formation of pyroxenite veins and associated harzburgites. According to this model, hydrous and aggregated melts were expelled from the tip of the dunite channels and subsequently injected into the lithosphere via fractures. The infiltrating melts then underwent diffusional loss of water into the residual harzburgites within the asthenosphere, which in turn promoting partial melting of the harzburgite. The pyroxenite veins were formed by mixing the infiltrating channel melt and matrix melt derived from partially molten harzburgite. This formation model can be applied to explain the pyroxenite-harzburgite and dunite-pyroxenite-harzburgite sequences in the Yarlung-Tsangbo ophiolite and other ophiolites around the world.
WOS关键词SUPRA-SUBDUCTION ZONE ; EARTH-ELEMENT DIFFUSION ; ZANGBO SUTURE ZONE ; LOW-CA PYROXENE ; TRACE-ELEMENT ; CLOSURE TEMPERATURE ; LUOBUSA OPHIOLITE ; MANTLE PERIDOTITE ; XIGAZE OPHIOLITE ; ROCK REACTION
资助项目We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis[42025201] ; National Science Fund for Distinguished Young Scholars[2020YFA0714801] ; National Key Research and Development Project of China[OCE-1852088] ; National Key Research and Development Project of China[EAR-2147598] ; US National Science Foundation
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:001104861700001
出版者SPRINGER
资助机构We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; US National Science Foundation ; US National Science Foundation ; US National Science Foundation ; US National Science Foundation ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; US National Science Foundation ; US National Science Foundation ; US National Science Foundation ; US National Science Foundation ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; US National Science Foundation ; US National Science Foundation ; US National Science Foundation ; US National Science Foundation ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; We thank Shi-Tou Wu, Di-Zhang, Li-Hui Jia, and Li-Xin Gu for data acquisition. This paper benefited from thoughtful reviews by Editor Dante Canil and two anonymous reviewers. This research has been supported by grants from the National Science Fund for Dis ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; US National Science Foundation ; US National Science Foundation ; US National Science Foundation ; US National Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/111167]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Liu, Chuan-Zhou
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA
4.Northwest Univ, Dept Geol, Xian 710069, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Zhen-Yu,Liu, Chuan-Zhou,Liang, Yan,et al. Pyroxenite-harzburgite sequences in the Dazhuqu ophiolite (Southern Tibet) formed through hydrous melt infiltration and melt-peridotite reaction[J]. CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,2023,178(12):30.
APA Zhang, Zhen-Yu.,Liu, Chuan-Zhou.,Liang, Yan.,Liu, Tong.,Zhang, Chang.,...&Ji, Wen-Bin.(2023).Pyroxenite-harzburgite sequences in the Dazhuqu ophiolite (Southern Tibet) formed through hydrous melt infiltration and melt-peridotite reaction.CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,178(12),30.
MLA Zhang, Zhen-Yu,et al."Pyroxenite-harzburgite sequences in the Dazhuqu ophiolite (Southern Tibet) formed through hydrous melt infiltration and melt-peridotite reaction".CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 178.12(2023):30.

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来源：地质与地球物理研究所

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