| 大兴安岭地区中生代地层特征及侏罗-白垩纪界线的讨论 |
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| 引用本文： | 邵积东,谭强,王惠,张明,贺宏云.大兴安岭地区中生代地层特征及侏罗-白垩纪界线的讨论[J].地质与资源,2011,20(1):4-11. |
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| 作者姓名： | 邵积东 谭强 王惠 张明 贺宏云 |
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| 作者单位： | 内蒙古自治区地质调查院, 内蒙古 呼和浩特 010020 |
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| 摘 要： | 对大兴安岭地区侏罗-白垩纪地层的岩石地层单位特征、接触关系、分布情况以及古生物化石和同位素年代学资料进行了介绍.根据所划分岩石地层单位的岩性组合、接触关系和古生物化石及同位素年代资料,对侏罗-白垩纪的界线进行讨论.由于获得了一批大于145 Ma的sHRIMP锆石U-Pb同位素年龄和古生物化石Peipiaosteus组合...
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| 关 键 词： | 中生代地层 侏罗-白垩纪界线 化石组合 同位素年龄 大兴安岭 |
| 收稿时间： | 2010-11-09 |
THE MESOZOIC STRATA AND THE JURASSIC-CRETACEOUS BOUNDARY IN THE DAXINGANLING REGION |
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| SHAO Ji-dong,TAN Qiang,WANG Hui,ZHANG Ming,HE Hong-yun.THE MESOZOIC STRATA AND THE JURASSIC-CRETACEOUS BOUNDARY IN THE DAXINGANLING REGION[J].Geology and Resources,2011,20(1):4-11. |
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| Authors: | SHAO Ji-dong TAN Qiang WANG Hui ZHANG Ming HE Hong-yun |
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| Institution: | 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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| Keywords: | Mesozoic strata Jurassic-Cretaceous boundary fossil assemblage isotopic age Daxinganling region |
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