Radiometric Zircon Ages of a Tuff Sample from the Baishantou Member of Wuyun Formation, Jiayin: A Contribution to the Search for the K-T Boundary in Heilongjian River Area, China
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  • SUZUKI Shigeyuki, SUN Ge, Ulrich KNITTEL, DANHARA Tohru and IWANO Hideki

    SUZUKI Shigeyuki, SUN Ge, Ulrich KNITTEL, DANHARA Tohru and IWANO Hideki

    1 Department of Earth Sciences, Okayama University, Okayama 700-8530, Japan;2 Key-Lab for Evolution of Past Life and Environment, MEC, Jilin University, Changchun 130026, China;3 Paleontological Institute of Shenyang Normal University, Shenyang 110034, China;4 Department of Geosciences, National Taiwan University, Taipei 106, China;5 Clay and Interface Mineralogy, RWTH Aachen University, Germany;6 Kyoto Fission-Track Co., Ltd., 44-4 Minamitajiri-cho Omiya Kita-ku, Kyoto 603-8832, Japan
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The authors express sincere thanks to the Project NSFC No. 30220130698 and the Project “111” of China for their support for this research. Thanks are extended to Professor Luo K. L. (IG, CAS, Beijing) for her help in the sample selecting work for this research. Thanks are also extended to: the National Science Council, Taiwan (grant 97-2811-M-002-040), the National Taiwan University for supporting Dr. Knittel to carry out his research, Sun-Lin Chung for providing his ICP-MS-lab, Chien-Hui (Emily) Hung for helping in preparation and LA-ICP-MS analyses, Yoshiyuki Iizuka for facilitating the CL imaging, and Ya-Ting Hsu for assistance in obtaining pictures.


Radiometric Zircon Ages of a Tuff Sample from the Baishantou Member of Wuyun Formation, Jiayin: A Contribution to the Search for the K-T Boundary in Heilongjian River Area, China
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    摘要:

    The existence of the Cretaceous-Tertiary (K/T) boundary in the non-marine succession is expected at Jiayin in the Heilongjiang River area, China. Zircons from a tuff sample from the Baishantou Member of Wuyun Formation in Jiayin were analyzed by the laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U-Pb dating and fission-track dating methods. Ages of 64.1±0.7 Ma (U-Pb) and 61.7±1.8 Ma (fission-track dating) were obtained, which allow re-evaluation of a previously reported late Maastrichian age for the tuff layer that was in conflict with the paleontological evidence. These results confirm the Danian age of the section in agreement with the paleontological evidence.

    Abstract:

    The existence of the Cretaceous-Tertiary (K/T) boundary in the non-marine succession is expected at Jiayin in the Heilongjiang River area, China. Zircons from a tuff sample from the Baishantou Member of Wuyun Formation in Jiayin were analyzed by the laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U-Pb dating and fission-track dating methods. Ages of 64.1±0.7 Ma (U-Pb) and 61.7±1.8 Ma (fission-track dating) were obtained, which allow re-evaluation of a previously reported late Maastrichian age for the tuff layer that was in conflict with the paleontological evidence. These results confirm the Danian age of the section in agreement with the paleontological evidence.

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SUZUKI Shigeyuki, SUN Ge, Ulrich KNITTEL, DANHARA Tohru and IWANO Hideki.2011. Radiometric Zircon Ages of a Tuff Sample from the Baishantou Member of Wuyun Formation, Jiayin: A Contribution to the Search for the K-T Boundary in Heilongjian River Area, China[J]. ACTA GEOLOGICA SINICA(English edition),85(6):1351~1358

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  • 收稿日期:2010-02-12
  • 最后修改日期:2010-10-19
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