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PENG-Yan, LI Rong-she, JI Wen-hua, et al. SHRMP U-Pb Geochronological Verification on the Identification of Early Paleozoic Volcanic Clasolite Zircons from the Beidahe Complex-Group in the Western Segment of the Middle Qilian Mountains, China[J]. Northwestern Geology, 2014, 47(4): 178-186.
Citation: PENG-Yan, LI Rong-she, JI Wen-hua, et al. SHRMP U-Pb Geochronological Verification on the Identification of Early Paleozoic Volcanic Clasolite Zircons from the Beidahe Complex-Group in the Western Segment of the Middle Qilian Mountains, China[J]. Northwestern Geology, 2014, 47(4): 178-186.
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SHRMP U-Pb Geochronological Verification on the Identification of Early Paleozoic Volcanic Clasolite Zircons from the Beidahe Complex-Group in the Western Segment of the Middle Qilian Mountains, China

  • 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;

  • 2. Xi'an Center of Geological Survey, China Geological Survey, Xi'an 710054, China

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  • Received Date: April 15, 2014
  • Revised Date: September 12, 2014
  • Available Online: July 28, 2022
  • Published Date: December 04, 2014
    Graphical Abstract
    • Abstract
  • Previous researchers thought Beidahe Complex-Group was one of the oldest metamorphic rocks in the western part of the Qilian orogenic belt. However, according to the SHRMP U-Pb zircon data of the mafic tuffs from the Beidahe Complex-Group in Subei area reported in the paper, the intermediate-basic tuffs were formed in (444±6.9) Ma, and they might be the product of early Paleozoic tectonic-magmatic activity in Mid-Qilian area rather than material compositions of Beidahe Complex-Group. The authors separated the tuff from Beidahe Complex-Group and re-attributed it to Wuligou Formation of Ordovician Series. The results of this study will provide new materials for exploring material composition and geological evolution of middle-south Qilian.
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