Late Precambrian chronostratigraphic framework and tectonic evolution of the Xiong’er basin in southern North China Craton
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    Abstract:

    The Xiong’er basin, with best preserved late Precambrian stratain the North China Craton, is an ideal site for reevaluating the sedimentary and tectonic evolution history of this period. Based on the collected and newly analyzed zircon chronology data of 38 clastic and 23 magmatic rocks, regional comparison of lithofacies and inheritance of sedimentary palaeogeographic patterns, the Late Precambrian chronostratigraphic framework, tectonic setting, evolution history as well as sedimentary paleogeography pattern are systematically studied. The readjusted chronostratigraphic framework divides the Late Precambrian evolution of the Xiong’er Basin into 6 basin stages, including aulacogen in the Early Changcheng Epoch, fault basin in the Late Changcheng Epoch, depression basin in the Jixian Period, depression basin in the early phase of the Unnamed period (Ectasian Period), depression basin in the Qingbaikou Period, as well as glacial depression basin in the Late Sinian Epoch, with three major sedimentary discontinuities in the end of Early Changcheng Epoch, middle- late phase of the Unnamed period, and Nanhua Period to Early Sinian Epoch. The collisional to extensional transition of tectonic setting in the Late Changcheng Epoch and Qingbaikou Period support the evolution model of multi- stage convergence and breakup between the North Qinling Terrane and the North China Craton. The volcanic- sedimentary rock series in the Early Changcheng Epoch to the early phase of the Unnamed period (Ectasian period) of the Mesoproterozoic Era and the 1. 64~1. 47 Ga anorogenic magmatic events are the geological responses to the breakup of the Columbia supercontinent. The sedimentary rock series of collisional setting and volcanic- sedimentary rock series of extensional setting in the early phase of the Qingbaikou Period are the geological response to convergence and breakup of the Rodinia supercontinent respectively.

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Li Zhensheng, Jiang Rourou, Ma Xueting, Zhang Yan, Li Quanzhong, Zhang Jiaodong.2021. Late Precambrian chronostratigraphic framework and tectonic evolution of the Xiong’er basin in southern North China Craton[J]. Acta Geologica Sinica,95(11):3234-3255

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History
  • Received:November 12,2020
  • Revised:January 16,2021
  • Adopted:
  • Online: August 11,2021
  • Published: