河南泌阳断陷陆相层序划分及其界面识别的岩矿标志  

Terrigenous Sequence Classification and Its Lithologic and Mineralogic Boundary Identification of the Upper Member of Eh_3 in Shuanghe-Zhaoao of Biyang Fault-depression

作　　者：胡受权[1] 郭文平[1] 

机构地区：[1]中山大学地球科学系,广州510275

出　　处：《新疆石油学院学报》2001年第2期1-5,共5页Journal of Xinjiang Petroleum Institute

摘　　要：泌阳断陷下第三系核三上 段可识别出三个层序 (S4、S5和S6) ,除S6顶界为沉积间断面 (即陆上暴露面 )外 ,其它层序界面皆为沉积相不连续面 ,测井曲线上显示电性突变特征。在高分辨率的三维地震剖面上可清晰地见到层序界面之下的局部削截现象 ,层序界面之上的上超现象亦较为普遍。所划三个层序不仅在地震剖面、电测曲线上有显著的识别标志 ,而且它们在岩石类型、矿物成分特征上 。The upper member of Eh 3 of Biyang fault-depression includes three terrigenous sequences(S4,S5 and S6).The top boundary of sequence S6 is sedimentary hiatus(meaning subaerial erosion),the others are discontinuous surface of sedimentary facies which appears sudden change on electric log. local truncation under sequence boundary and onlap above sequence boundary are ordinarily found on the 3-D seismic profile of high resolution.Identification marking of the three terrigenous sequences is distinct not only on seismic profile and log,but also in lithological features and mineral composition.

关 键 词：泌阳断陷 陆相层序 层序划分 界面标志 岩矿标志 

分 类 号：P539.2[天文地球—古生物学与地层学]