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Decoupled neodymium and hafnium isotopes in seawater as insights into the Late Neoarchean weathering process

文献类型：期刊论文

作者Peng, Zidong1,2,5; Wang, Changle1,2,4; Zhang, Lianchang1,2,4; Zhai, Mingguo3,4
刊名PRECAMBRIAN RESEARCH
出版日期2023-10-01
卷号397页码:14
ISSN号0301-9268
关键词Neodymium isotope Hafnium isotope Ge/Si ratio Seawater geochemistry Banded iron formation Neoarchean
DOI10.1016/j.precamres.2023.107170
英文摘要We here present trace element and coupled Sm-Nd and Lu-Hf isotope data for both pure and detritus-rich BIF samples collected from the similar to 2.51 Ga Zhalanzhangzi BIF, North China Craton to investigate sources of BIF-forming materials to the ambient seawater, and to evaluate factors controlling the decoupling of Hf and Nd isotope systems in Late Neoarchean seawater. Both pure and detritus-rich BIFs exhibit positive Eu anomalies, positive correlation between epsilon(Nd(2.51Ga)) values and Fe2O3 contents, and moderate negative to positive epsilon(Nd(2.51Ga)) values, revealing a combined submarine hydrothermal and terrigenous sources for REY and iron to ambient seawater. Instead of interpreting the correlation between Ge/Si ratio and iron (or silica) content of BIFs as the mixing of hydrothermal and terrigenous sources of silica, we preferred a terrigenous source for silica to Neoarchean seawater. Moreover, by compiling published Ge/Si data, we argue that although hydrothermal fluids might be the dominant source of silica to early Archean oceans, a continent-derived riverine flux was expected to be the main source of silica to ambient seawater, following the substantial increase in land mass during Neoarchean. The epsilon(Nd(2.51Ga)) and epsilon(Hf(2.51Ga)) values of pure BIFs reveal decoupling of Nd and Hf isotopes in ambient seawater, and suggest that incongruent terrestrial weathering had significant effects on oceanic geochemistry at the end of Archean eon. In addition, based on the observation that Neoarchean seawater was characterized by more radiogenic epsilon(Hf) values when compared to its modern counterpart, we posit a weak to moderate chemical weathering conditions for Neoarchean continents.
WOS关键词BANDED IRON-FORMATION ; RARE-EARTH-ELEMENTS ; NORTH CHINA CRATON ; GA PONGOLA SUPERGROUP ; ISUA GREENSTONE-BELT ; REE PLUS Y ; EASTERN HEBEI ; ND ISOTOPES ; TRACE-ELEMENT ; TRANSVAAL SUPERGROUP
资助项目National Science Foundation of China[42272082] ; China Scholarship Council[202004910064] ; National Natural Science Foundation of China[42150104] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[ZDBS-LY-DQC037] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向Geology
语种英语
出版者ELSEVIER
WOS记录号WOS:001084440600001
资助机构National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/110747]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
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Zhai, Mingguo
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
5.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Zidong,Wang, Changle,Zhang, Lianchang,et al. Decoupled neodymium and hafnium isotopes in seawater as insights into the Late Neoarchean weathering process[J]. PRECAMBRIAN RESEARCH,2023,397:14.
APA Peng, Zidong,Wang, Changle,Zhang, Lianchang,&Zhai, Mingguo.(2023).Decoupled neodymium and hafnium isotopes in seawater as insights into the Late Neoarchean weathering process.PRECAMBRIAN RESEARCH,397,14.
MLA Peng, Zidong,et al."Decoupled neodymium and hafnium isotopes in seawater as insights into the Late Neoarchean weathering process".PRECAMBRIAN RESEARCH 397(2023):14.

入库方式： OAI收割

来源：地质与地球物理研究所

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