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The recognizing of ca. 1.95 Ga tectono-thermal eventin Kongling nucleus and its significance for the evolution of Yangtze Block, South China

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Chinese Science Bulletin

Abstract

Some 1.95 Ga metamorphism of high-grade Archean rocks in Kongling terrain, continental nucleus of Yangtze Block, South China, are recognized by Sm-Nd dating. This event is further confirmed by the ages of single zircon SHRIMP U-Pb and K-Ar analyses of TTG and (or) paragneisses, and intrusions of potassic-granitic batholith in the region. The coincidence in period between the high-grade metamorphism in the Kongling area and the creation of major basement rocks of its neighborhoods of the Yangtze Block around the Kongling Archean nucleus makes it a favorable explanation for their tectonic connections that, in the whole Yangtze Block there was some tectono-thermal event of ca. 2.0-1.8 Ga, which resulted in the formation of unitive Yangtze basement.

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Authors and Affiliations

  1. Faculty of Earty Sciences, China University of Geosciences, 430074, Wuhan, China

    Wenli Ling, Shan Gao, Benren Zhang, Lian Zhou & Qidong Xu

  2. Department of Geology, Northwest University, 710069, Xi’an, China

    Shan Gao

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  1. Wenli Ling
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  2. Shan Gao
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  3. Benren Zhang
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  4. Lian Zhou
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Ling, W., Gao, S., Zhang, B. et al. The recognizing of ca. 1.95 Ga tectono-thermal eventin Kongling nucleus and its significance for the evolution of Yangtze Block, South China. Chin.Sci.Bull. 46, 326–329 (2001). https://doi.org/10.1007/BF03187196

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  • DOI: https://doi.org/10.1007/BF03187196

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