| 塔里木盆地古隆1井中上奥陶统牙形石生物地层界线研究 |
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| 引用本文： | 蔡习尧,祁玉平,钱一雄,陈跃.塔里木盆地古隆1井中上奥陶统牙形石生物地层界线研究[J].地质科学,2011,46(2):466-474. |
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| 作者姓名： | 蔡习尧 祁玉平 钱一雄 陈跃 |
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| 作者单位： | 1.中国石油化工股份有限公司石油勘探开发研究院 北京 100083；2.中国科学院南京地质古生物研究所 北京 210008 |
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| 基金项目： | 中国石化重点科技攻关项目 |
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| 摘 要： | 塔中地区古隆1井中晚奥陶世处于台缘斜坡带,地层发育齐全,奥陶系划分为3统5组,自上而下为却尔却克组、恰尔巴克组、一间房组、鹰山组与蓬莱坝组.在恰尔巴克组及一间房组分别获得了Pygouds anserinus与P.serra牙形石带,依此将中上奥陶统界线划在5875 m,两统之间不存在任何地层缺失或不整合面.认为碳酸盐岩...
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| 关 键 词： | 塔里木盆地 古隆1井 牙形石 中上奥陶统 |
| 收稿时间： | 2010-10-06 |
Research of the biostratigraphy boundary on the Middle and Upper Ordovocoan in well GL1 of Tarim Basin |
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| Cai Xiyao,Qi Yuping,Qian Yixiong,Chen Yue.Research of the biostratigraphy boundary on the Middle and Upper Ordovocoan in well GL1 of Tarim Basin[J].Chinese Journal of Geology,2011,46(2):466-474. |
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| Authors: | Cai Xiyao Qi Yuping Qian Yixiong Chen Yue |
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| Institution: | 1.Research Institute of Exploration &|Production, SINOPEC, Beijing 100083;2.Nanjing Institute of Geology and Palaeontology, Chinese Academy of Science, Nanjing 210008 |
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| Abstract: | The Gulong 1 well lies in the platform margin slope in Middle and Late Ordovician，the sequence of strata of the Ordovician growth completely.They are divided into three series and six formations.The Upper Ordovician includes Queerqueke Formation and Qaerbake Formation，from top to bottom，the middle is consist of Yijianfang Formation and the upper of Yinshan Formation，the lower comprise the lower of Yinshan Formation and Penglaiba Formation.The sequence of strata is unique，the Middle and Lower Ordovician is identical with that of the Tazhang low uplift，the Upper Ordovician is similar to that of the Tadong region.There are a lot of conodont in the Qaerbake Formation and Yijianfang Formation，they belong to three fossil zone：Pygouds anserinus，P.serrus and Eoplacognathus suecicus.The boundary of Upper and Middle Ordocivian is place in 5875 m.There is not any lacuna or unconformity.The Lianglitag Formation in the carbonate platform had a phase transformation to the mudstone and calcareous mudstone of 191 m in Gulong 1 well，It display a blank space reflection in the seismic section and is easily followed the trail in the landscape.There are synchronization on the distribution of Qaerbake Formation and Yijianfang Formation，they are hiatus in the main port of Tazheng low uplift and has a distribution in the low lying of the platform margin or slope. |
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| Keywords: | Tarim Basin Gulong-1 well Conodont Upper and Lower Ordovician |
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