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THE MESOZOIC STRATA AND THE JURASSIC-CRETACEOUS BOUNDARY IN THE DAXINGANLING REGION |
SHAO Ji-dong, TAN Qiang, WANG Hui, ZHANG Ming, HE Hong-yun |
Inner Mongolia Institute of Geological Survey, Hohhot 010020, China |
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Abstract The Jurassic-Cretaceous strata in Daxinganling region are studied regarding the lithostratigraphic units, contact relation, distribution, paleontology and isotopic chronology. The J-K boundary is discussed on the basis of such study. The U-Pb isotopic ages of zircon by SHRIMP are greater than 145 Ma. With the support of fossil assemblages of Peipiaosteus, Nestoria-Keratestheria and Ferganoconcha, the J-K boundary is set between Baiyingaolao formation and Meiletu and Yixian formations.
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Received: 09 November 2010
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[1] |
CHEN Hui-jun, CUI Tian-ri, QIAN Cheng, LI Lin-chuan, CHEN Jing-sheng, LI Wei, WU Xin-wei, JIANG Bin, SI Qiu-liang, QIN Tao, TANG Zhen, ZHANG Yu-jin, GUO Wei. ZIRCON U-Pb GEOCHRONOLOGY OF BASHENGHE PLUTON IN NORTHERN DAXINGANLING MOUNTAINS: Geological Implications[J]. GEOLOGY AND RESOURCES, 2019, 28(5): 405-412. |
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