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Geochemistry of khondalites from the central portion of North China craton (NCC): implications for the continental cratonization in the Neoarchean

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Abstract

Within the high-grade metamorphic basement, the central portion of North China Craton (NCC), a group of Neoarchean khondalites (KS) is identified. They are characterized by large ion lithophile elements (LILE) enrichment, lower abundances of Zr, Hf and Sr. Their rare earth element (REE) distribution has significant LREE enrichment and negative Eu anomalies. The protoliths of KS are interpreted as feldspathic quartzite, shale or pelite and carbonite, deposited in a shallow sea upon cratonic shelf distant from the land. KS’s source region might be dominated by granitic rocks, with a minor amount of TTG, underwent comparatively severe chemical weathering. Considering relevent tectonic constraints, we suggest that khondalites from central portion of NCC, an important metamophosed sedimentary cover, are the most significant exogenetic marker of Neoarchean continental cratonization for NCC.

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Authors and Affiliations

  1. Department of Geology, Peking University, 100871, Beijing, China

    Jianghai Li, Xianglin Qian & Shuwen Liu

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  1. Jianghai Li
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  2. Xianglin Qian
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  3. Shuwen Liu
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Correspondence to Jianghai Li.

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Li, J., Qian, X. & Liu, S. Geochemistry of khondalites from the central portion of North China craton (NCC): implications for the continental cratonization in the Neoarchean. Sci. China Ser. D-Earth Sci. 43, 253–265 (2000). https://doi.org/10.1007/BF02906821

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  • DOI: https://doi.org/10.1007/BF02906821

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