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Fe isotopic evidence that ?high pressure? TTGs formed at low pressure

文献类型：期刊论文

作者Liou, Peng3; Wang, Zaicong2; Mitchell, Ross N.3,5; Doucet, Luc S.1; Li, Ming2; Guo, Jinghui3,5; Zhai, Mingguo3,4
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2022-08-15
卷号592页码:11
ISSN号0012-821X
关键词TTG Fe isotope crustal growth eastern Hebei North China Craton
DOI10.1016/j.epsl.2022.117645
英文摘要Tonalite-trondhjemite-granodiorite (TTG) rocks consitute the dominant felsic lithology of the Archean crust in most cratons, but their petrogenesis and geodynamic setting are still matters of great debate. Here, we report new Fe isotopic analyses for ca. 2.5 Ga diorites and TTGs with compositions typically interpreted to reflect a high-pressure affinity in eastern Hebei Province of the North China craton. Whole-rock Fe3+/ sigma Fe and delta Fe-56 of the trondhjemites show strong correlations with MgO and Fe2O3T, both indices of igneous differentiation, supporting the radical reinterpretation that the apparent "high pressure " signatures in the trondhjemites instead formed by amphibole-dominated fractionation at low pressure. Likewise, for the tonalites, their light Fe isotopes make them unlikely to be the melting products of enriched mafic rocks at high pressure within the garnet stability range. Thus, Fe isotopes support that "high pressure " TTGs in verity formed at lower pressure with little involvement of residual garnets. Our results thus challenge the evidence once purported to infer Archean subduction. (C) 2022 Elsevier B.V. All rights reserved.
WOS关键词CALC-ALKALINE DIFFERENTIATION ; EASTERN HEBEI ; GRANITIC MAGMAS ; IRON ; FRACTIONATION ; MANTLE ; REDOX ; GEOCHEMISTRY ; CONSTRAINTS ; SUBDUCTION
资助项目National Natural Science Foundation of China[41890834] ; National Natural Science Foundation of China[41802202] ; Chinese Academy of Sciences[XDB41000000]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:000812362500005
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 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/106096]  
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Liou, Peng
作者单位1.Curtin Univ, Sch Earth & Planetary Sci, Earth Dynam Res Grp, TIGeR, Perth, WA 6102, Australia
2.China Univ Geosci, Sch Earth Sci, State Key Lab Geol Proc & Mineral Resources GPMR, Wuhan 430074, 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, Key Lab Computat Earth Dynam, Beijing 100049, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Liou, Peng,Wang, Zaicong,Mitchell, Ross N.,et al. Fe isotopic evidence that ?high pressure? TTGs formed at low pressure[J]. EARTH AND PLANETARY SCIENCE LETTERS,2022,592:11.
APA Liou, Peng.,Wang, Zaicong.,Mitchell, Ross N..,Doucet, Luc S..,Li, Ming.,...&Zhai, Mingguo.(2022).Fe isotopic evidence that ?high pressure? TTGs formed at low pressure.EARTH AND PLANETARY SCIENCE LETTERS,592,11.
MLA Liou, Peng,et al."Fe isotopic evidence that ?high pressure? TTGs formed at low pressure".EARTH AND PLANETARY SCIENCE LETTERS 592(2022):11.

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来源：地质与地球物理研究所

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