| Sporopollen Assemblages from the Cretaceous Yimin Formation of the Hailar Basin, Inner Mongolia, China |
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| 作者姓名： | WAN Chuanbiao QIAO Xiuyun XU Yanbin SUN Yuewu REN Yanguang JIN Yudong GAO Ping and LIU Tongyan Exploration and Development Research Institute of Daqing Oilfield Company Ltd. Daqing Heilongjiang E-mail: wcb@vip.sina.com College of Earth Sciences Jilin University Changchun Jilin Research Center of Paleontology and Stratigraphy Jilin University Changchun Jilin |
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| 作者单位： | [1]Exploration and Development Research Institute of Daqing Oilfield Company Ltd., Daqing, Heilongjiang 163712 [2]College of Earth Sciences, Jilin University, Changchun, Jilin 130061 [3]Research Center of Paleontology and Stratigraphy, Jilin University, Changchun, Jilin 130026 |
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| 摘 要： | Three sporopollen assemblages are recognized for the first time from the Cretaceous Yimin Formation in the Hailar Basin of eastern Inner Mongolia. They are （in ascending order）： the lmpardecispora-Aequitriradites- Clawttipollenites assemblage; the Triporoletes-Pilosisporites-Asteropollis assemblage; and the Appendicisporites- Asteropollis-Tricolpites assemblage, distributed in Members 1, 2 and 3 of the Yimin Formation respectively. Recognition of this biostratigraphic sequence is very important for the division and correlation of the Yimin Formation in the basin. Meanwhile, the age of the Yimin Formation is considered to be Barremian to Early Albian based on the palynological data.
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| 关 键 词： | 内蒙古 白垩纪 地质年代 历史地质学 盆地 |
Sporopollen Assemblages from the Cretaceous Yimin Formation of the Hailar Basin, Inner Mongolia, China |
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| Authors: | WAN Chuanbiao QIAO Xiuyun XU Yanbin SUN Yuewu REN Yanguang JIN Yudong GAO Ping and LIU Tongyan Exploration and Development Research Institute of Daqing Oilfield Company Ltd Daqing Heilongjiang E-mail: wcb@vipsinacom College of Earth Sciences Jilin University Changchun Jilin Research Center of Paleontology and Stratigraphy Jilin University Changchun Jilin |
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| Abstract: | Three sporopollen assemblages are recognized for the first time from the Cretaceous Yimin Formation in the Hailar Basin of eastern Inner Mongolia. They are (in ascending order): the Impardecispora-Aequitriradites-Clavatipollenites assemblage; the Triporoletes-Pilosisporites-Asteropollis assemblage; and the Appendicisporites-Asteropollis-Tricolpites assemblage, distributed in Members 1, 2 and 3 of the Yimin Formation respectively. Recognition of this biostratigraphic sequence is very important for the division and correlation of the Yimin Formation in the basin. Meanwhile, the age of the Yimin Formation is considered to be Barremian to Early Albian based on the palynological data. |
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| Keywords: | Cretaceous Barremian-Early Albian sporopollen assemblage angiosperms Hailar Basin Inner Mongolia |
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