| 塔里木板块古城4井中奥陶统一间房组的海进序列 |
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| 引用本文： | 王冠,张云峰,杨柳明,王振宇,李越.塔里木板块古城4井中奥陶统一间房组的海进序列[J].微体古生物学报,2011(1):137-144. |
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| 作者姓名： | 王冠 张云峰 杨柳明 王振宇 李越 |
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| 作者单位： | 西南石油大学资源与环境学院;中国科学院南京地质古生物研究所; |
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| 基金项目： | 国家自然科学基金(批准号:41072002); 中国科学院知识创新工程方向性项目(KZCX2-YW-Q05-01,KZCX2-YW-122)的支持 |
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| 摘 要： | 塔里木板块中央隆起区奥陶系碳酸盐岩台地东南缘的古城4井钻遇约130m厚的中奥陶统达瑞威尔阶一间房组灰岩。该组下部为表附藻-肾形钙藻-瓶筐石礁丘群落,间夹有薄层砂屑滩,海水深度推测位于10-30m的潮下带至正常波浪带之间;上部为中-低能带藻屑砂屑组合,灰泥含量增高,大致指示正常波浪带之下到最大浪基面之间30-60m的深度。古城4井与中央隆起区西北部巴楚露头区同期沉积均显示海水逐渐加深的过程,到上奥陶统桑比阶吐木休克组沉积期两地都达到了奥陶系的最大海泛面。
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| 关 键 词： | 海进 一间房组 中奥陶统 古城4井 中央隆起区东南缘 塔里木板块 |
TRANSGRESSIVE SEQUENCES THROUGHOUT THE YIJIANFANG FORMATION(DARRIWILIAN,MIDDLE ORDOVICIAN)AT WELL GUCHENG 4,TARIM BLOCK,NW CHINA |
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| WANG Guan ,ZHANG Yunfeng ,YANG Liuming ,WANG Zhenyu , LI Yue Southwest University of Petroleum,Chengdu,Sichuan,Nanjing Institute of Geology , Palaeontology,Chinese Academy of Sciences,Nanjing.TRANSGRESSIVE SEQUENCES THROUGHOUT THE YIJIANFANG FORMATION(DARRIWILIAN,MIDDLE ORDOVICIAN)AT WELL GUCHENG 4,TARIM BLOCK,NW CHINA[J].Acta Micropalaeontologica Sinica,2011(1):137-144. |
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| Authors: | WANG Guan ZHANG Yunfeng YANG Liuming WANG Zhenyu LI Yue Southwest University of Petroleum Chengdu Sichuan Nanjing Institute of Geology Palaeontology Chinese Academy of Sciences Nanjing |
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| Institution: | WANG Guan 1),ZHANG Yunfeng 1),YANG Liuming 1),WANG Zhenyu 1)and LI Yue 2)1)Southwest University of Petroleum,Chengdu,Sichuan,5105002)Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008 |
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| Abstract: | Well Gucheng 4 is located at the eastern margin of the Central High of the Tarim Block during the Middle Ordovician.The Darriwillian(Middle Ordovician)Yijianfang Formation limestones with thickness of 130 m from the borehole is conformably overlain by the Tumuxiuke Formation and underlain by the Yinshan Formation respectively.The ecological parameters such as the lithofacies,biotic as well as sedimentary structures are indicator of the water depth.The limestone sequences of the Yijianfang Formation consists... |
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| Keywords: | transgression Yijianfang Formation Middle Ordovician Well Gucheng 4 southeastern margin of the Central Uplift Belt Tarim Block NW China |
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