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Protolith reconstruction and geochemical study on the wall rocks of Anshan BIFs, Northeast China: Implications for the provenance and tectonic setting
Xiao-Hui Sun; Xiao-Qing Zhu; Hao-Shu Tang; Qian Zhang; Tai-Yi Luo; Tao Han
Corresponding AuthorXiao-Qing Zhu
2014
Source PublicationJournal of Geochemical Exploration
Volume136Issue:1Pages:65-75
AbstractThe petrography, as well as major and trace element (including rare earth element) compositions of plagioclase amphibolites and schists from the Anshan Group in the Qidashan and Gongchangling iron deposits, the western Liaoning Province, have been investigated to determine protolith nature, provenance and tectonic setting. The geochemical analysis has revealed that protoliths of the plagioclase amphibolite and schist could be basic volcanic rock and mudstone/siltstone, respectively. Based on the results of protolith reconstruction, metapelites (namely, the schists) have been used to evaluate their provenance and weathering history. The metapelites can be divided into two groups based on the Chemical Index of Alteration (CIA) and Plagioclase Index of Alteration (PIA) values, but both groups were sourced from an active tectonic setting. Zr/Sc and Th/Sc ratios illustrate that the metapelites, which display no significant sediment recycling, might be the first-cycle erosion products. Various discrimination diagrams for sedimentary provenance show that the metapelites predominantly derived from the mixed felsic and basic sources. The geochemical characteristics and discrimination diagrams of plagioclase amphibolites and schists demonstrate that the Qidashan and Gongchangling iron deposits might be formed in an Archean active tectonic setting related to subduction of an oceanic slab.
Subject Area矿床地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/5172
Collection矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
Corresponding AuthorXiao-Qing Zhu
Recommended Citation
GB/T 7714
Xiao-Hui Sun,Xiao-Qing Zhu,Hao-Shu Tang,et al. Protolith reconstruction and geochemical study on the wall rocks of Anshan BIFs, Northeast China: Implications for the provenance and tectonic setting[J]. Journal of Geochemical Exploration,2014,136(1):65-75.
APA Xiao-Hui Sun,Xiao-Qing Zhu,Hao-Shu Tang,Qian Zhang,Tai-Yi Luo,&Tao Han.(2014).Protolith reconstruction and geochemical study on the wall rocks of Anshan BIFs, Northeast China: Implications for the provenance and tectonic setting.Journal of Geochemical Exploration,136(1),65-75.
MLA Xiao-Hui Sun,et al."Protolith reconstruction and geochemical study on the wall rocks of Anshan BIFs, Northeast China: Implications for the provenance and tectonic setting".Journal of Geochemical Exploration 136.1(2014):65-75.
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