• WAN Yushneg

  WAN Yushneg

  1 Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
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• DONG Chunyan

  DONG Chunyan

  1 Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
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• XIE Hangqiang

  XIE Hangqiang

  1 Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
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• WANG Shijin

  WANG Shijin

  2 Shandong Geological Survey Institute, Jinan 250013, China
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This paper is to honour Academician Li Tingdong, on the occasion of his 90th birthday (2020), who has made great contributions to geology in China. We thank Yang Chun, Zhang Zhichao and Zhou Liqing for mount making and zircon CL imaging. We also appreciate the technical support of Liu Jianhui and Che Xiaochao for the smooth operation of the SHRIMP instrument during zircon dating. Thanks are also to Yang Chonghui and Wang Xiaolei for helpful comments. This study was financially supported by the Key Program of the Ministry of Land and Resources of China (DD20190370, DD20190009, DD20190358, DD20190003).