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  4. 中国科学院新生代地质与环境重点实验室
Nickel isotopic composition of the upper continental crust

文献类型：期刊论文

作者Wu, Guangliang1; Zhu, Jian-Ming1; Wang, Xiangli2; Johnson, Thomas M.3; He, Yongsheng1; Huang, Fang4; Wang, Lian-Xun5; Lai, Shao-Cong6
刊名GEOCHIMICA ET COSMOCHIMICA ACTA
出版日期2022-09-01
卷号332页码:263-284
关键词Nickel isotopic composition Upper Continental Crust TTGs Loess and river sediments Diamictites
ISSN号0016-7037
DOI10.1016/j.gca.2022.06.019
英文摘要Establishing the nickel (Ni) isotopic composition of the upper continental crust (UCC) is crucial for using the Ni isotope system to trace biogeochemical processes and understand crust-mantle interactions. This study reports the Ni isotopic composition of eighty-four well-characterized upper crustal samples, including granites, granodiorites, tonalite-trondhjemite-gran odiorite (TTG), loess, river sediments and glacial diamictites, to constrain the Ni isotopic composition of the UCC. Significant variations in delta Ni-60 are revealed for I-type (0.02-0.26%), A-type (-0.05-0.08%) and S-type (0.08-0.36%) granites for the first time. These Ni isotopic variations are attributed to magmatic differentiation for I-and A-type granites and source heterogeneity for S-type granites. The delta Ni-60 values of fine-grained clastic sediments (including loess, river sediments and glacial diamictites) range from-0.01% to 0.23%. Such delta Ni-60 variations cannot be explained by Ni isotopic fractionation during chemical weathering because there are no clear correlations between delta Ni-60 and Ni/Al2O3, or the chemical index of alteration (CIA). Instead, the delta Ni-60 variations in fine-grained clastic sediments are likely inherited from source rocks. The delta Ni-60 values of our samples for 3.2-3.5 Ga TTGs (0.00-0.13%), 2.4-2.5 Ga TTGs (0.04-0.13%) and < 0.4 Ga granites (excluding S-type granites) are statistically indistinguishable (P < 0.05, student's t-test), implying limited variation of delta Ni-60 in the felsic igneous UCC since 3.5 Ga. Similarly, the delta Ni-60 values of glacial diamictites suggest insignificant temporal variation in the weathered UCC since 2.4 Ga. The data gathered in this study combined with literature data yields an arithmetic mean delta Ni-60 value of 0.12 +/- 0.15% (2SD) for the UCC (ranging from-0.07% to 0.36%). And the weighted average delta Ni-60 is estimated to be 0.07 +/- 0.10% (2SD) or 0.11 +/- 0.09% (2SD) depending on the assumed delta Ni-60 of the metamorphic rocks. Thus, a lithology-weighted average delta 60Ni needs to be further determined by future studies when the delta 60Ni values of metamorphosed sedimentary rocks in the UCC are constrained. (c) 2022 Elsevier Ltd. All rights reserved.
WOS关键词S-TYPE GRANITES ; A-TYPE GRANITES ; TRONDHJEMITE-GRANODIORITE TTG ; YANGTZE-RIVER SEDIMENTS ; LACHLAN FOLD BELT ; CHEMICAL-COMPOSITION ; NI ISOTOPES ; EXPERIMENTAL CONSTRAINTS ; FERROMANGANESE CRUSTS ; CHINA INSIGHTS
资助项目National Natural Science Foundation of China[U1612441] ; National Natural Science Foundation of China[41473028]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000861037700002
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/108344]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Zhu, Jian-Ming
作者单位1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.Univ Illinois, Dept Geol, 3081 Nat Hist Bldg, Urbana, IL 61801 USA
4.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Anhui 230026, Peoples R China
5.China Univ Geosci, Sch Earth Sci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
6.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Guangliang,Zhu, Jian-Ming,Wang, Xiangli,et al. Nickel isotopic composition of the upper continental crust[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2022,332:263-284.
APA Wu, Guangliang.,Zhu, Jian-Ming.,Wang, Xiangli.,Johnson, Thomas M..,He, Yongsheng.,...&Lai, Shao-Cong.(2022).Nickel isotopic composition of the upper continental crust.GEOCHIMICA ET COSMOCHIMICA ACTA,332,263-284.
MLA Wu, Guangliang,et al."Nickel isotopic composition of the upper continental crust".GEOCHIMICA ET COSMOCHIMICA ACTA 332(2022):263-284.

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来源：地质与地球物理研究所

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