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Iron and Carbon Isotope Constraints on the Formation Pathway of Iron-Rich Carbonates within the Dagushan Iron Formation, North China Craton

文献类型：期刊论文

作者Tong, Xiaoxue5,6,7; Mand, Kaarel3,4; Li, Yuhao4; Zhang, Lianchang5,6,7; Peng, Zidong5,6,7; Wu, Qiang2; Li, Pengbo2; Zhai, Mingguo5,6,7; Robbins, Leslie J.1; Wang, Changle5,6,7
刊名MINERALS
出版日期2021
卷号11期号:1页码:20
关键词banded iron formation siderite dissimilatory iron reduction (DIR) iron isotopes carbon isotopes North China Craton
DOI10.3390/min11010094
英文摘要Banded iron formations (BIFs) are enigmatic chemical sedimentary rocks that chronicle the geochemical and microbial cycling of iron and carbon in the Precambrian. However, the formation pathways of Fe carbonate, namely siderite, remain disputed. Here, we provide photomicrographs, Fe, C and O isotope of siderite, and organic C isotope of the whole rock from the similar to 2.52 Ga Dagushan BIF in the Anshan area, China, to discuss the origin of siderite. There are small magnetite grains that occur as inclusions within siderite, suggesting a diagenetic origin of the siderite. Moreover, the siderites have a wide range of iron isotope compositions (delta Fe-56(Sd)) from -0.180 parts per thousand to +0.463 parts per thousand, and a relatively negative C isotope composition (delta C-13(Sd) = -6.20 parts per thousand to -1.57 parts per thousand). These results are compatible with the reduction of an Fe(III)-oxyhydroxide precursor to dissolved Fe(II) through microbial dissimilatory iron reduction (DIR) during early diagenesis. Partial reduction of the precursor and possible mixing with seawater Fe(II) could explain the presence of siderite with negative delta Fe-56, while sustained reaction of residual Fe(III)-oxyhydroxide could have produced siderite with positive delta Fe-56 values. Bicarbonate derived from both DIR and seawater may have provided a C source for siderite formation. Our results suggest that microbial respiration played an important role in the formation of siderite in the late Archean Dagushan BIF.
资助项目National Natural Science Foundation of China[41872087] ; National Natural Science Foundation of China[41890833] ; National Natural Science Foundation of China[41902078] ; Key Research Program of the Institute of Geology and Geophysics, CAS[IGGCAS-201905]
WOS研究方向Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000610608300001
出版者MDPI
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 ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; 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 the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; 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 the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; 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 the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/100028]  
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
通讯作者Wang, Changle
作者单位1.Univ Regina, Dept Geol, Regina, SK S4S 0A2, Canada
2.Liaoning Met Geol Explorat Res Inst Co, Anshan 114000, Peoples R China
3.Univ Tartu, Dept Geol, EE-50114 Tartu, Estonia
4.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
7.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Tong, Xiaoxue,Mand, Kaarel,Li, Yuhao,et al. Iron and Carbon Isotope Constraints on the Formation Pathway of Iron-Rich Carbonates within the Dagushan Iron Formation, North China Craton[J]. MINERALS,2021,11(1):20.
APA Tong, Xiaoxue.,Mand, Kaarel.,Li, Yuhao.,Zhang, Lianchang.,Peng, Zidong.,...&Konhauser, Kurt O..(2021).Iron and Carbon Isotope Constraints on the Formation Pathway of Iron-Rich Carbonates within the Dagushan Iron Formation, North China Craton.MINERALS,11(1),20.
MLA Tong, Xiaoxue,et al."Iron and Carbon Isotope Constraints on the Formation Pathway of Iron-Rich Carbonates within the Dagushan Iron Formation, North China Craton".MINERALS 11.1(2021):20.

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