| 岐口凹陷新近系生物-遗迹相及环境解释 |
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| 引用本文： | 刘彦博,严德天,王华,卢宗盛,喻建新.岐口凹陷新近系生物-遗迹相及环境解释[J].地球科学,2009,34(3). |
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| 作者姓名： | 刘彦博 严德天 王华 卢宗盛 喻建新 |
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| 作者单位： | 中国地质大学研究生院;中国地质大学资源学院;中国地质大学地球科学学院; |
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| 基金项目： | 国家自然科学基金，湖北省自然科学重点基金 |
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| 摘 要： | 岐口凹陷新近系包括明化镇组和馆陶组.通过新近系中的孢粉、介形虫和遗迹组构的系统研究,识别出孢粉53个属种,并建立了两个孢粉组合,分别为Magnastites(粗肋孢)-Ulmus(榆粉)-Taxodiaceaepollenites(杉粉)组合和Polygonaceae-Chenopodiaceae组合;发现介形虫12个属种,介形类以金星介科分子为主,少数湖花介科分子,以壳形单一、壳壁薄、表面光滑的类型为主,表现了典型的非海相淡水介形类面貌;划分出4种遗迹组构类型.分别为Scoyenia遗迹组构、Skolithos遗迹组 构、Palaeophycus遗迹组构和强扰动组构.在此基础上,探索了生物与环境的关系,划分了A、B、C、D,E 5种生物-遗迹相带,分别代表泛滥平原、蓄水注地或泛滥平原小型湖、河道及水下分流河道边部、滨浅湖和前三角洲沉积环境.
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| 关 键 词： | 生物相 遗迹相 生物标志物 新近系 岐口凹陷 |
Biofacies and Ichnofacies of Neogene in the Qikou Depression and Their Environmental Interpretation |
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| LIU Yan-bo,YAN De-tian,WANG Hua,LU Zong-sheng,YU Jian-xin .Graduate School,China University of Geosciences,Wuhan ,China .Faculty of Earth Resources,China .Faculty of Earth Sciences,China.Biofacies and Ichnofacies of Neogene in the Qikou Depression and Their Environmental Interpretation[J].Earth Science-Journal of China University of Geosciences,2009,34(3). |
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| Authors: | LIU Yan-bo YAN De-tian WANG Hua LU Zong-sheng YU Jian-xin Graduate School China University of Geosciences Wuhan China Faculty of Earth Resources China Faculty of Earth Sciences China |
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| Institution: | LIU Yan-bo1,YAN De-tian2,WANG Hua2,LU Zong-sheng3,YU Jian-xin3 1.Graduate School,China University of Geosciences,Wuhan 430074,China 2.Faculty of Earth Resources,China 3.Faculty of Earth Sciences,China |
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| Abstract: | Sporopollen,ostracod and ichnofabric characteristics of Neogene in the Qikou depression were studied and fifty-three genus were recognized.Two sporopollen combination,Magnastites-Ulmus-Taxodiaceaepollenites and Polygonaceae-Chenopodiaceae,were established.Twelve genus ostracod were identified.The ostracod shell is singleness,thin and slippy,which exhibites the visage of typical freshwater ostracod.Four ichnofabric were identified,which are Scoyenia ichnofabric,Skolithos ichnofabric,Palaeophycus ichnofabric ... |
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| Keywords: | biofacies ichnofacies biomakers Neogene Qikou depression |
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