Protolith reconstruction and geochemical study on the wall rocks of Anshan BIFs, Northeast China: Implications for the provenance and tectonic setting

	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
通讯作者	Xiao-Qing Zhu
	2014
发表期刊	Journal of Geochemical Exploration
卷号	136 期号:1 页码:65-75
摘要	The 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.
学科领域	矿床地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5172
专题	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
通讯作者	Xiao-Qing Zhu
推荐引用方式 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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