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歧口凹陷缓坡带层序地层模式
引用本文:孟繁有,李勇,何川,肖敦清,蒲秀刚,袁淑琴,刘子藏.歧口凹陷缓坡带层序地层模式[J].中国石油大学学报(自然科学版),2011,35(4):14-19,26.
作者姓名:孟繁有  李勇  何川  肖敦清  蒲秀刚  袁淑琴  刘子藏
作者单位:1. 中国石油大学地球科学学院,北京,102249
2. 成都理工大学油气藏地质及开发工程国家重点实验室,四川成都,610059
3. 大港油田勘探开发研究院,天津,300280
基金项目:国家自然科学基金,大港油田分公司科技项目
摘    要:根据层序地层学原理及构造-沉积关系,对歧口凹陷缓坡带构造样式和层序地层模式进行研究,并分析二者之间的相互关系。依据构造特征将歧口凹陷缓坡带划分为外带、中带、内带3个构造地貌单元,进而将其分为低角度-多断-斜坡型缓坡、低角度-多断-单坡折型缓坡和高角度-多断-多坡折型缓坡3种缓坡构造样式。在歧口凹陷缓坡带沙河街组内部划分6个二级层序和16个三级层序,建立其层序格架,阐明其内部沉积特征。针对3种不同类型的缓坡,分析构造控制下的沉积层序展布特征。结果表明:层序具有不完整性,低位体系域较不发育,湖侵体系域和高位体系域分布广泛;在空间上,由北向南层序的数量减少,厚度减薄,各层序的完整程度也降低;缓坡构造样式控制层序类型和地层结构。

关 键 词:坡折带  层序地层  构造样式  沙河街组  缓坡带  歧口凹陷

Sequence stratigraphic models on gentle slope of Qikou depression
MENG Fan-you,LI Yong,HE Chuan,XIAO Dun-qing,PU Xiu-gang,YUAN Shu-qin,LIU Zi-cang.Sequence stratigraphic models on gentle slope of Qikou depression[J].Journal of China University of Petroleum,2011,35(4):14-19,26.
Authors:MENG Fan-you  LI Yong  HE Chuan  XIAO Dun-qing  PU Xiu-gang  YUAN Shu-qin  LIU Zi-cang
Institution:MENG Fan-you1,LI Yong2,HE Chuan3,XIAO Dun-qing3,PU Xiu-gang3,YUAN Shu-qin3,LIU Zi-cang3 (1.College of Geosciences in China University of Petroleum,Beijing 102249,China,2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploration,Chengdu University of Technology,Chengdu 610059,3.Institute of Exploration and Exploitation,Dagang Oilfield,Tianjin 300280,China)
Abstract:According to the principle of sequence stratigraphy and the relationship between the tectonic structure and deposition,the structure pattern and sequence mode were studied on the area of gentle slope of Qikou depression.And the relationship between tectonic structure and deposition was analyzed.Three types of structure unit were discriminated according to the tectonic characteristics on the area of gentle slope of Qikou depression.They were outside-belt,middle-belt and inside-belt respectively.And then thre...
Keywords:break slope  sequence stratigraphy  tectonic pattern  Shahejie formation  gentle slope  Qikou depression  
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