• RSS
  • E-mail Alert
  • 收藏主页

古地理学报 ›› 2016, Vol. 18 ›› Issue (5): 731-742. doi: 10.7605/gdlxb.2016.05.055

• 岩相古地理学及沉积学 • 上一篇    下一篇

塔里木盆地北部地区奥陶系层序地层格架与沉积演化*

宋倩1, 马青1, 董旭江1, 刘莹2, 高翔1, 曹康1   

  1. 1 西南石油大学地球科学与技术学院,四川成都 610500;
    2 中联煤层气国家工程研究中心有限责任公司,北京 100095
  • 收稿日期:2015-06-17 修回日期:2015-11-01 出版日期:2016-10-01 发布日期:2016-10-01
  • 通讯作者: 马青,男,1962年生,西南石油大学副教授,主要从事油气地质综合研究。E-mail: 656812599@qq.com。
  • 作者简介:宋倩,女,1990年生,西南石油大学硕士研究生,专业为矿产普查与勘探。E-mail: olddreammaker_s@outlook.com。
  • 基金资助:
    *国家科技重大专项“塔里木盆地海相碳酸盐岩油气资源潜力、有利勘探区带评价与目标优选研究”项目(编号: 2011ZX5004-004)资助

Sequence stratigraphic framework and sedimentary evolution of the Ordovician in northern Tarim Basin

Song Qian1, Ma Qing1, Dong Xujiang1, Liu Ying2, Gao Xiang1, Cao Kang1   

  1. 1 School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,Sichuan;
    2 National Engineering Research Center of China United Coal-bed Gas,Beijing 100095
  • Received:2015-06-17 Revised:2015-11-01 Online:2016-10-01 Published:2016-10-01
  • Contact: Song Qian,born in 1990,is a master degree candidate of Southwest Petroleum University. She majors in mineral resource prospecting and exploration. E-mail: olddreammaker_s@outlook.comAbout the corresponding author Ma Qing,born in 1962,is an associate professor of Southwest Petroleum University. He is mainly engaged in petroleum geology. E-mail: 656812599@qq.com
  • Supported by:
    ; [Financially supported by the project “Study on hydrocarbon potential,favorable exploration region,target optimization of marine carbonate rock in Tarim Basin”of National Science and Technology Major Project(No.2011ZX5004-004)]

RichHTML

PDF

摘要： 应用层序地层学和沉积岩石学的原理与方法,深入分析塔里木盆地北部地区(塔北地区)轮南、哈拉哈塘和英买力3个构造单元逾百口钻井的岩心、薄片、测井等资料,结合主要构造运动及海平面变化的研究,建立塔北地区奥陶系层序地层格架,阐述格架内沉积特征及演化。根据区域性不整合界面划分2个二级层序(SSQ1,SSQ2),SSQ1包括下奥陶统—中奥陶统,SSQ2包括中奥陶统—上奥陶统;再根据岩性岩相转换面划分11个三级层序(OSQ1—OSQ11);进一步根据主要海泛面,划分海侵体系域(TST)和高位体系域(HST)。塔北地区奥陶纪沉积环境主要为浅海台地,经历了局限台地—开阔台地—淹没台地—台地边缘的演化过程,最终因陆源碎屑的注入破坏了台地的沉积环境,晚奥陶世塔北地区转为混积台地环境。

关键词: 层序地层, 沉积演化, 碳酸盐岩台地, 奥陶系, 塔里木盆地

Abstract: According to the theory and approach of sequence stratigraphy and sedimentary petrology,based on thorough analysis of the data of cores,thin sections,well logging in the three tectonic units of Lunnan,Halahatang,Yingmaili in northern Tarim Basin,combining with the previous study on main tectonic events and sea level changes,the sequence stratigraphic framework was estabished and the sedimentary characteristics and evolution were described. According to the regional unconformity surface,two 2nd-order sequences,SSQ1 and SSQ2,were identified. SSQ1 included the Lower and Middle Ordovician,SSQ2 included the Middle and Upper Ordovician. And then,on the basis of lithologic characteristics and lithofacies converting surfaces,eleven 3rd-order sequences(OSQ1-OSQ11)were identified. Further,according to the main marine flooding surfaces,the sequences were divided into transgressive system tract(TST)and highstand system tract(HST). The shallow-sea platform is the main sedimentary environment of the Ordovician in northern Tarim Basin and it experienced the evolutionary process of restricted platform,open platform and platform edge from the Early Ordovician to the Late Ordovician successively. Eventually,as detrital material of terrigenous origin filled in,the platform sedimentary environment in northern Tarim Basin was destroyed and developed into mixed platform.

Key words: sequence stratigraphy, sedimentary evolution, carbonate rock platform, Ordovician, Tarim Basin

中图分类号: