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现代地质 ›› 2005, Vol. 19 ›› Issue (Suppl): 49-53.

• 石油地质 • 上一篇    下一篇

渤海湾盆地埕北凹陷南部—桩东凹陷西部下第三系沉积特征分析

刘宁1,2,王锋1,王伟庆2   

  1. 1中国科学院 广州地球化学研究所,广东 广州510640;2胜利油田有限公司 地质科学研究院, 山东 东营257015
  • 收稿日期:2004-09-08 修回日期:2004-10-28 出版日期:2005-03-20 发布日期:2013-04-08
  • 作者简介:刘宁,男,高级工程师,博士研究生,1969年出生,岩石矿物学专业,主要从事沉积与储层的综合研究工作。
  • 基金资助:

    中国石油化工集团公司“九五”科技重点攻关项目(P10503)。

ANALYSIS OF THE LOWER TERTIARY SEDIMENT CHARACTER ON THE SOUTH OF THE CHENGBEI SAG TO THE WEST OF THE ZHUANGDONG SAG,BOHAI BAY BASIN

LIU Ning1,2,WANG Feng1,WANG Wei-qing2   

  1. 1Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,Guangdong510640,China;
    2Geological Research Institute of Shengli  Oilfield  Company Limited,Dongying,Shandong257015, China
  • Received:2004-09-08 Revised:2004-10-28 Online:2005-03-20 Published:2013-04-08

摘要:

在对渤海湾盆地埕北凹陷南部—桩东凹陷西部下第三系地层、岩性特征进行深入研究的基础上,将传统生物地层学、岩石地层学方法与层序地层学方法相结合,结合古气候的变迁与构造活动的变化,对该区下第三系不同时期的古沉积环境进行了深入的分析研究。系统总结了埕北凹陷南部下第三系断陷湖盆的沉积体系类型及发育特征,在此基础上初步开展了沉积体系演化的主控因素及层序地层分析,将研究区下第三系划分为孔店组—沙四段下、沙四段上—沙二段下、沙二段上—东营组3个层序,并对其发育特征进行了简要分析。构造活动、气候变迁、沉积物的充填为影响和控制层序发育和湖盆沉积体系类型的主要因素。

关键词: 渤海湾盆地, 埕北凹陷, 桩东凹陷, 地层, 沉积体系, 层序

Abstract:

After analyzing the stratum and lithological character of the Lower Tertiary of the south of the Chengbei sag to the west of the Zhuangdong sag,Bohai Bay basin,using the knowledge of biologic stratigraphy,lithologic stratigraphy and sequence stratigraphy,we study the palaeoenvironmental setting of the study area on the base of changing of palaeoclimate and tectonic movement. This paper comprehensively summarizes the sedimentary system types and evolutive character of the Lower Tertiary faulted basin in Chengbei sag,then studies the main dominant factors of evolvement of the sedimentary system and sequence,and divides Lower Tertiary into three sequences, including Kongdian Formation to lower Shasi subformation,upper Shasi subformation to lower Shaer subformation,and upper Shaer subformation to Dongying Formation. The main dominative factors of the evolvement of the sedimentary system and sequence include the movement of structure,the change of climate and the filling of sediments.

Key words: Bohai Bay basin, Chengbei sag, Zhuangdong sag, stratum, sedimentary system, sequence

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