| 早白垩世陆相九佛堂阶的重新厘定及其层型剖面 |
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| 引用本文： | 田树刚,牛绍武. 早白垩世陆相九佛堂阶的重新厘定及其层型剖面[J]. 地质通报, 2010, 0(Z1) |
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| 作者姓名： | 田树刚 牛绍武 |
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| 作者单位： | 中国地质科学院地质研究所;中国地质调查局天津地质矿产研究所; |
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| 基金项目： | 国家自然科学基金项目《侏罗系-白垩系界线过渡期大北沟阶至义县阶连续剖面及化石分带研究》(批准号:40472019); 全国地层委员会项目《中国主要断代地层建阶研究》(编号:200113900076)联合资助 |
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| 摘 要： | 通过实测冀北滦平梁根村-东沟村九佛堂组剖面,并在开展多学科系统研究的基础上,把剖面划分为3个岩性段,建立了系统的叶肢介生物地层6个组合,进行辽西九佛堂组—沙海组与冀北滦平九佛堂组的等时性对比;分析剖面的沉积相叠置特征,证明了剖面的沉积连续性和沉积旋回性变化,识别出剖面的3个浅湖相三级层序,重新厘定九佛堂阶的定义及其单位、界线层型。建议将"沙海阶"并入九佛堂阶,单位和界线层型定在冀北滦平盆地西北部梁根村-东山村之间;底界以叶肢介Eosesthe-ria fuxinensis和E.jiufotangensis的首现为标志。
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| 关 键 词： | 九佛堂阶 陆相层型 早白垩世 滦平盆地 |
Review on terrestrial Jiufotangian Stage of the Lower Cretaceous and its stratotype |
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| TIAN Shu-gang,NIU Shao-wu. Review on terrestrial Jiufotangian Stage of the Lower Cretaceous and its stratotype[J]. Geologcal Bulletin of China, 2010, 0(Z1) |
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| Authors: | TIAN Shu-gang NIU Shao-wu |
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| Affiliation: | TIAN Shu-gang1,NIU Shao-wu21.Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China,2.Tianjin Institute of Geology , Mineral Resources,China Geological Survey,Tianjin 300170 |
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| Abstract: | A terrestrial stratotype of the Jiufotangian stage has been erected by studying on systematically the Lianggen Village-Donggou Village strato-section,Luanping,northern Hebei.According to standard of a stratotype erected,many courses and methods have been carried out,i.e dividing the section into three lithologic units,erecting conchostracan biostratigraphic six assemblages,chronologically correlating between the Jiufotang-Shahai Formation of western Liaoning and the Jiufotang Formation of northern Hebei,ana... |
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| Keywords: | Jiufotangian Stage terrestrial stratotype Lower Cretaceous Luanping basin |
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