Late Neoarchean tectonic evolution in eastern China: Enlightenment from the ancient continental core restoration
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P542;P534.1

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    Abstract:

    Unified Archean continental core is of great significance to the study of the tectonic evolution of Precambrian continental crust. The Archean continental core in the eastern block of the North China Craton is greatly affected by the Tan-Lu fault, including the early NNE-trend sinistral strike-slip movement in the southern segment of the Tan-Lu fault and the later NE-trend sinistral strike-slip movement in the southern segment of the Tan-Lu fault. This study restores the original pattern of the Archean continental crust in the eastern block of the North China Craton before the development of the Tan-Lu fault. The structural recovered ancient terrane and the gneissic foliations of the rocks all show the NNW-trending feature. Based on our structural analysis of the Gongchangling BIF area, a large number of thrust structures suggestive of a horizontal movement were developed in the ore-bearing Archean supercrustal rocks. Combined with geochronological age-dating of this Archean structure in the Gongchangling BIF, this paper further reveals that lateral compression structures (horizontal movement) may have occurred in the North China Craton at the end of the Neoarchean.

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田忠华,王伟,刘平华,2022,中国东部新太古代末期构造演化——来自古老陆核构造恢复的启示[J].岩石矿物学杂志,41(4):681~694. TIAN Zhong-hua, WANG Wei, LIU Ping-hua,2022,Late Neoarchean tectonic evolution in eastern China: Enlightenment from the ancient continental core restoration[J]. Acta Petrologica et Mineralogica,41(4):681~694.

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History
  • Received:December 10,2021
  • Revised:
  • Adopted:
  • Online: July 18,2022
  • Published: July 25,2022
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