| 苏北盆地三垛组时代归属 |
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| 引用本文： | 蔡小李,赵正忠.苏北盆地三垛组时代归属[J].石油学报,1992,13(2):150-153. |
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| 作者姓名： | 蔡小李 赵正忠 |
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| 作者单位： | 江苏石油勘探局地质科学研究院 |
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| 摘 要： | 在建立苏北盆地三垛组主要微体化石门类生物地层剖面的基础上,首次发现介形类标志性化石EChinocypris,它为盆地间地层对比提供可靠的古生物依据.根据主要门类化石组合特征,明确三垛组一、二段分别与大仓房组、核桃园组、潭头组的对比关系,并借助哺乳类动物群和海相微体化石作为确定时代的依据,提出三垛组为中始新世,苏北盆地缺失晚始新世—渐新世地层的新认识.
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| 关 键 词： | 苏北盆地 第三纪 三垛组 生物地层对比 地层年代单位 |
| 收稿时间： | 1991-03-12 |
THE GEOLOGIC AGE OF SANDUO FORMATION IN NORTH JIANGSU BASIN |
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| Cai Xiaoli,Zhao Zhengzhong,Qian Zeshu.THE GEOLOGIC AGE OF SANDUO FORMATION IN NORTH JIANGSU BASIN[J].Acta Petrolei Sinica,1992,13(2):150-153. |
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| Authors: | Cai Xiaoli Zhao Zhengzhong Qian Zeshu |
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| Affiliation: | Geological Institute of Tiangsu Petroleum Exploration Bureau |
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| Abstract: | Index fossil of ostracodes,Echinocypris,was discovered,for the first time,in this basin which is a reliable evidence for Stratigraphic correlation among different basins.Based on the characteristics of major fossil assemblys,the first and second members of Sanduo Formation is equivalent to Dacang Fang plus Hetao-yuan Formations and Tantou Formation respectively.Taking mammalian faunas and marine microfossil as evidences for strata dating,it is comfirmed that Sanduo Formation is middle Eocene in age.Upper Eocene and oligocenestrata are absent in North Jiangsu basin. |
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