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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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。认为碳酸盐岩台地上的良里塔格组在古隆1井相变为191 m厚的泥岩夹灰质泥岩,在地震剖面显示为一套空白反射,横向较好追踪与对比;指出了恰尔巴克组与一间房组在平面展布上具有同步性,卡塔克隆起主体上缺失,仅分布在台地边缘低洼处或在斜坡带。
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 5 875 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.
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 5 875 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.
引文
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李越,黄智斌,王建坡,王志浩,薛耀松,张俊明,张元动,樊隽轩,张园园.2009． 新疆巴楚中-晚奥陶世牙形刺生物地层和沉积环境研究.地层学杂志,33(2) :113-122． Li Yue,Huang Zhibin,Wang Jianpo,Wang Zhihao,Xue Yaosong,Zhang Junming,Zhang Yuandong,Fan Junxuan and Zhang Yuanyuan.2009． Conodont biostratigraphy and sedimentology of the Middle and Upper Ordovician in Bachu,Xinjiang.Journal of Stratigraphy,33 ( 2) :113-122．
王志浩,李越,王建坡,马俊业,姚小刚,黄智斌,张园园.2009． 塔里木中央隆起区上奥陶统的牙形刺.微体古生物学报,26(2) :97-116．Wang Zhihao,Li Yue,Wang Jianpo,Ma Junye,Yao Xiaogang,Huang Zhibin and Zhang Yuanyuan.2009． Upper Ordovician conodonts from the central high,Tarim block,NW China.Acta Micropalaeontologica Sinica ,26 (2) :97-116．
熊剑飞,武涛,叶德胜.2006． 新疆巴楚中-晚奥陶世牙形刺研究的新进展.古生物学报,45(3) :359-373． Xiong Jianfei,Wu Tao and Ye Desheng.2006． New advances of the study of Middle-Late Ordovician conodonts in Bachu,Xinjiang.Acta Palaeontologica Sinica ,45 ( 3) :359-373．
熊剑飞,武涛,杨素举.2006． 再论塔东北地区奥陶系的划分和对比.见:塔河油气田勘探与评价文集.北京:石油工业出版社.28-38 Xiong Jianfei,Wu Tao and Yang Suju.2006． Research on the Ordovician Stratigraphic Division and Correlation in the Northeast area of Tarim Basin.In :Exploration and Evaluation on the Tahe Oil and Gas Field.Beijing :Beijing Petroleum Industry Press.28-38．
张师本,黄智斌,朱怀诚.2004． 塔里木盆地覆盖区显生宙地层.北京:石油工业出版社.36-37． Zhang Shiben,Huang Zhibin and Zhu Huaichen.2004． Phanerozoic Strata in Coverage Area of Tarim Basin.Beijing:Beijing Petroleum Industry Press.36-37．
赵宗举,赵治信,黄智斌.2006． 塔里木盆地奥陶系牙形石带及沉积层序.地层学杂志,30(3) :193-203． Zhao Zongju,Zhao Zhixin and Huang Zhibin.2006． Ordovician conodont zones and sedmentary sequences of the Tarim Basin,Xinjiang,NW China.Journal of Stratigraphy,30 ( 3) :193-203．
赵宗举,潘文庆,张丽娟,邓胜徽,黄智斌.2009． 塔里木盆地奥陶系层序地层格架大地构造与成矿学,33(1) :175-188． Zhao Zongju,Pan Wenqing,Zhang Lijuan,Deng Shenghui and Huang Zhibin.2009． Sequence stratigraphy in the Ordovician in the Tarim Basin.Geotectonica et Metallogenia,33( 1) :175-188．
赵治信,张桂芝,肖继南.2000． 新疆古生代地层及牙形石.北京:石油工业出版社.1-340． Zhao Zhixin,Zhang Guizhi and Xiao Jinan.2000． Paleozoic Strata and Conodonts in Xinjiang.Beijing:Beijing Petroleum Industry Press.1-340．
蔡习尧,李越.2008a.新疆塔中南坡奥陶系的地层缺失和沉积相变化.地层学杂志32(4) :353-362． Cai Xiyao and Li Yue.2008a.Ordovician lithofacies and stratigraphic lacunae in the southern part of the central Tarim, Xinjiang.Journal of Stratigraphy,32 (4) :353-362．
蔡习尧,吴亚生,姜红霞,邹建斌.2008b.新疆巴楚地区中上奥陶统生物礁群落古生态学.地质学报,82(8) :1046-1051． Cai Xiyao,Wu Yasheng,Jiang Hongxia and Zou Jianbin.2008b.Paleoecology of Middle and Upper Ordovician reefal community in Bachu,Xinjjiang,northwestern China.Acta Geologica Sinica,82 ( 8) :1046-1051．
贾承造,张师本,吴绍祖.2004． 塔里木盆地及周边地层.北京:科学出版社75-81． Jia Chengzao,Zhang Shiben and Wu Shaozu.2004． Stratigraphy of the Tarim Basin and Adjacent Areas.Beijing:Science Press.75-81．
李越,黄智斌,王建坡,王志浩,薛耀松,张俊明,张元动,樊隽轩,张园园.2009． 新疆巴楚中-晚奥陶世牙形刺生物地层和沉积环境研究.地层学杂志,33(2) :113-122． Li Yue,Huang Zhibin,Wang Jianpo,Wang Zhihao,Xue Yaosong,Zhang Junming,Zhang Yuandong,Fan Junxuan and Zhang Yuanyuan.2009． Conodont biostratigraphy and sedimentology of the Middle and Upper Ordovician in Bachu,Xinjiang.Journal of Stratigraphy,33 ( 2) :113-122．
王志浩,李越,王建坡,马俊业,姚小刚,黄智斌,张园园.2009． 塔里木中央隆起区上奥陶统的牙形刺.微体古生物学报,26(2) :97-116．Wang Zhihao,Li Yue,Wang Jianpo,Ma Junye,Yao Xiaogang,Huang Zhibin and Zhang Yuanyuan.2009． Upper Ordovician conodonts from the central high,Tarim block,NW China.Acta Micropalaeontologica Sinica ,26 (2) :97-116．
熊剑飞,武涛,叶德胜.2006． 新疆巴楚中-晚奥陶世牙形刺研究的新进展.古生物学报,45(3) :359-373． Xiong Jianfei,Wu Tao and Ye Desheng.2006． New advances of the study of Middle-Late Ordovician conodonts in Bachu,Xinjiang.Acta Palaeontologica Sinica ,45 ( 3) :359-373．
熊剑飞,武涛,杨素举.2006． 再论塔东北地区奥陶系的划分和对比.见:塔河油气田勘探与评价文集.北京:石油工业出版社.28-38 Xiong Jianfei,Wu Tao and Yang Suju.2006． Research on the Ordovician Stratigraphic Division and Correlation in the Northeast area of Tarim Basin.In :Exploration and Evaluation on the Tahe Oil and Gas Field.Beijing :Beijing Petroleum Industry Press.28-38．
张师本,黄智斌,朱怀诚.2004． 塔里木盆地覆盖区显生宙地层.北京:石油工业出版社.36-37． Zhang Shiben,Huang Zhibin and Zhu Huaichen.2004． Phanerozoic Strata in Coverage Area of Tarim Basin.Beijing:Beijing Petroleum Industry Press.36-37．
赵宗举,赵治信,黄智斌.2006． 塔里木盆地奥陶系牙形石带及沉积层序.地层学杂志,30(3) :193-203． Zhao Zongju,Zhao Zhixin and Huang Zhibin.2006． Ordovician conodont zones and sedmentary sequences of the Tarim Basin,Xinjiang,NW China.Journal of Stratigraphy,30 ( 3) :193-203．
赵宗举,潘文庆,张丽娟,邓胜徽,黄智斌.2009． 塔里木盆地奥陶系层序地层格架大地构造与成矿学,33(1) :175-188． Zhao Zongju,Pan Wenqing,Zhang Lijuan,Deng Shenghui and Huang Zhibin.2009． Sequence stratigraphy in the Ordovician in the Tarim Basin.Geotectonica et Metallogenia,33( 1) :175-188．
赵治信,张桂芝,肖继南.2000． 新疆古生代地层及牙形石.北京:石油工业出版社.1-340． Zhao Zhixin,Zhang Guizhi and Xiao Jinan.2000． Paleozoic Strata and Conodonts in Xinjiang.Beijing:Beijing Petroleum Industry Press.1-340．
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