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Decoupled Zircon Si-O Isotopes Tracing the Supracrustal Silicification and Komatiitic-Derived Fluids in the Source of TTGs

文献类型：期刊论文

作者Lei, Kai1,3; Wang, Hao1,3; Wang, Xiaolei2; Zhang, Qing1; Li, Xian-Hua1,3
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2023-08-28
卷号50期号:16页码:9
ISSN号0094-8276
关键词Si isotope O isotope TTG komatiitie Barberton
DOI10.1029/2023GL104002
英文摘要The tonalite-trondhjemite-granodiorite suites (TTGs) are key components of the Archean continental crust and therefore crucial to the understanding of the evolution of the early Earth. Here, we present in situ zircon Si-O isotope data of TTGs from Barberton. Results show that the 3.45-3.42 Ga (Group 1) and 3.24-3.23 Ga TTGs (Group 2) have elevated & delta;Si-30(melt) values but mantle-like & delta;O-18(zrc) values, whereas the 3.23-3.22 Ga TTGs (Group 3) have coupled elevated & delta;Si-30(melt) and & delta;O-18(zrc) values relative to mantle-derived rocks. We suggest that the Group 1 and 2 TTGs had a silicified source that was affected by low-& delta;O-18 fluid released from the komatiitic rocks. The low-& delta;O-18 fluid decreased the & delta;O-18(zrc) values of Group 1 and 2 TTGs but had negligible influence on their & delta;Si-30(melt) values. The Group 3 TTGs were generated solely from the silicified source, as the low-& delta;O-18 fluid had become exhausted at that time.
WOS关键词BARBERTON MOUNTAIN LAND ; SILICON ISOTOPES ; OXYGEN ISOTOPES ; WORKING REFERENCE ; FRACTIONATION ; HF ; EVOLUTION ; INSIGHTS ; GRANITOIDS ; REWORKING
资助项目National Natural Science Foundation of China[41890831] ; National Natural Science Foundation of China[41973035] ; National Natural Science Foundation of China[42025202]
WOS研究方向Geology
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:001057450600001
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 ; 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/132A11/111407]  
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Li, Xian-Hua
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Lei, Kai,Wang, Hao,Wang, Xiaolei,et al. Decoupled Zircon Si-O Isotopes Tracing the Supracrustal Silicification and Komatiitic-Derived Fluids in the Source of TTGs[J]. GEOPHYSICAL RESEARCH LETTERS,2023,50(16):9.
APA Lei, Kai,Wang, Hao,Wang, Xiaolei,Zhang, Qing,&Li, Xian-Hua.(2023).Decoupled Zircon Si-O Isotopes Tracing the Supracrustal Silicification and Komatiitic-Derived Fluids in the Source of TTGs.GEOPHYSICAL RESEARCH LETTERS,50(16),9.
MLA Lei, Kai,et al."Decoupled Zircon Si-O Isotopes Tracing the Supracrustal Silicification and Komatiitic-Derived Fluids in the Source of TTGs".GEOPHYSICAL RESEARCH LETTERS 50.16(2023):9.

入库方式： OAI收割

来源：地质与地球物理研究所

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