| 西伯利亚西部白垩纪孢粉的参照序列:演化阶段,相和对比 |
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| 作者姓名： | Natalia K.LEBEDEVA Ekaterina B.PESTCHEVITSKAYA |
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| 作者单位： | 俄罗斯西伯利亚石油地质与地球物理研究所 |
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| 基金项目： | 国家自然科学基金(No.91114201);国家重点基础研究发展计划(2012CB821906)资助出版 |
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| 摘 要： | 研究西伯利亚西部白垩纪沉积层的孢粉可以建立孢粉组合的参照序列。本文运用采自海相剖面的材料与菊石化石带进行对比,建立了下白垩统和上白垩统一些层位中的孢粉化石带。这些新确立的孢粉组合层序反映了白垩纪孢粉植物群的演化阶段。由于生物相和古地理特征的变化,孢粉组合在横向上变化较大,很难依据孢粉资料进行地区间的精确对比。然而,有些孢粉组合演化发展的总体趋势能用于对比、定义部分地层层位。
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| 关 键 词： | 孢粉地层学 孢粉组合 相 区域间对比 古植物分区 白垩纪 西伯利亚 |
REFERENCE CRETACEOUS SPORE-POLLEN SUCCESSION OF WEST SIBERIA:EVOLUTIONARY STAGES,FACIES,AND CORRELATIONS |
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| Natalia K.LEBEDEVA,Ekaterina B.PESTCHEVITSKAYA.REFERENCE CRETACEOUS SPORE-POLLEN SUCCESSION OF WEST SIBERIA:EVOLUTIONARY STAGES,FACIES,AND CORRELATIONS[J].Journal of Stratigraphy,2012(2):193-212. |
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| Institution: | Natalia K.LEBEDEVA and Ekaterina B.PESTCHEVITSKAYA Institute of Petroleum Geology and Geophysics of SB RAS,av.ak.Koptyug 3,630090 Novosibirsk,Russia, |
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| Abstract: | Palynological studies of Cretaceous deposits in West Siberia allow the definition of a reference succession of spore-pollen assemblages.Materials from marine sections provide their calibration against ammonite scale and definition of spore-pollen zones at some levels in the Lower and Upper Cretaceous.Defined succession of spore-pollen assemblages reflects the evolutionary stages of Cretaceous palynofloras.Considerable lateral variations of spore-pollen assemblages related to facies and palaeogeographic features preclude accurate interregional correlations on spore-pollen based data,but some general tendencies in the evolutionary development of spore-pollen assemblages can be defined for some stratigraphic levels. |
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| Keywords: | palynostratigraphy spore-pollen assemblages facies interregional correlation palaeofloristic provinces Cretaceous West Siberia |
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