扇三角洲沉积体系高精度层序地层学研究  

High-Resolution Sequence Research in Fan-delta Sedimentary System

作　　者：赵俊青[1] 纪友亮[2] 夏斌[1] 张善文[3] 刘宝明[1] 

机构地区：[1]中国科学院广州地球化学研究所与南海海洋研究所边缘地质重点实验室,广州510640 [2]同济大学海洋与地球科学学院,上海200092 [3]中国石油化工胜利油田有限公司,山东东营257015

出　　处：《沉积学报》2004年第2期302-309,共8页Acta Sedimentologica Sinica

基　　金：国家十五科技攻关项目 :济阳坳陷下第三系隐蔽油气藏形成机理研究 (2 0 0 1BA60 50 9)部分成果;国家重点基础研究发展规划项目:渤海湾盆地中生代地层剥蚀量恢复及中;新生代盆地叠合关系探讨 (G1 9990 4 330 4 )专题资助

摘　　要：以东营凹陷胜北断层下降盘坨 76块沙四上亚段扇三角洲沉积体为例 ,对扇三角洲沉积体系下的高精度层序地层学进行了研究。经过分析认为 ,在扇三角洲沉积体系中的高精度层序地层单元划分为准层序组、准层序、层组、层四级 ,并对准层序和层组的类型和对比方法进行了总结。将扇三角洲沉积体系中的层组类型划分为Fu、Cu和Cu -Fu三大类 ,准层序类型划分为Fu -Fu、Cu -Fu、Cu -Cu三大类 ,同时总结出了沿物源方向的相序递变和垂直物源方向的侵蚀切割对比 2种准层序和层组对比模式。This paper discusses high-resolution sequence in fan-delta sedmentary system, exemplifying T76 fan-delta of the fourth upper member of Shhejie formation in Shengbei fault's downthrown side of Dongying depression.Research shows that the high resolution sequence stratigraphic units are divided into parasequence set,parasequence,bed set and bed in fan-delta. The authors particularly study types and comparative methods of parasequence and bed set. The type of bed set is divided into Fu,Cu and Cu-Fu types, and parasequence into Fu-Fu,Cu-Fu and Cu-Cu types. We have summrized two comparative methods of parasequence and bed set which are facies change paralleling to source area and incisement perpendicular to the source area.

关 键 词：扇三角洲 沉积体系 层序地层学 层组 

分 类 号：P539.2[天文地球—古生物学与地层学]