陆相裂陷盆地层序地层构成样式分析——以泌阳凹陷核三上段为例ANALYSIS OF THE SEQUENCE-STRATIGRAPHIC PATTERN OF CONTINENTAL RIFT BASIN——TAKING BIYANG DEPRESSION AS AN EXAMPLE
侯艳平,任建业,张青林,罗家群
摘要(Abstract)：
层序地层源于被动大陆边缘盆地 ,如何将层序地层分析应用于陆相裂陷盆地是当前一个热点课题 ,近年来国内外对陆相裂陷盆地层序的研究取得了重要的成果。可容空间和沉积物供给沿着活动断层走向和倾向上的变化是控制陆相裂陷盆地层序发育样式的两个主要因素。在走向上 ,断块中部断层活动性最强 ,构造沉降最大 ,可容空间增加速率也最大 ,沉积物大多短源供给 ,以发育 型层序为主 ,向着断端 ,断层的活动性逐渐减弱 ,上盘下降和下盘上升速率相对减小 ,形成相对低地 ,是沉积物优先通过的场所 ,以 型层序发育为主。沿着倾向上 ,靠近断层的陡坡带断层活动性强 ,位移大 ,发育 型层序 ,向着远离正断层的缓坡带 ,构造活动性逐渐减弱 ,基底沉降减小 , 型层序样式发育。 型层序的下切谷和盆底扇以及斜坡扇是良好的储集体 ,具有良好的石油勘探前景
关键词(KeyWords)： 陆相裂陷盆地;可容空间;沉积物供给;层序样式;地层;层序;泌阳凹陷;河南
基金项目(Foundation): 国家自然科学基金《渤海湾盆地中始新世末期构造变革界面研究》(No.40 3 72 0 67);; 中石化集团公司十五先导性项目“南阳—泌阳凹陷高精度层序地层学及岩性油气藏勘探”课题联合资助
作者(Author): 侯艳平,任建业,张青林,罗家群
参考文献(References)：
- 林畅松,潘元林,肖建新等.2000.构造坡折带——断陷盆地层序分析和油气预测的重要概念.地球科学,25(3):260-267.
- 胡受权等.2000.断陷湖盆陡坡带陆相层序地层的“沉积滨线坡折”问题探讨.古地理学报,2(4),20-29.
- GawthorpeR L,FraserA J,&CollierRE L I.1994.Sequencestratigraphy in active extensional basin:im plications for theinterpretation of ancient basin-fills.Marine andPetroleumGeology,11(6):642-656.
- GawthorpeR L &L eederM R.2000.Tectonic-sedim entaryevolution of active extensional basins.BasinResearch,12:195-218.
- GuptaS,U nderhillJ R,SharpI R,et al.1999.Role of faultinteractions in controlling synrift sediment dispersal patterns:Miocene,AbuAlaqaGroup,SuezRift,Sinai,Egypt.BasinResearch,11:167-189.
- IanR Sharp,RobL Gawthorp,JohnR U nderhill,&GuptaS.2000.Fault-propagation folding in extensional settings:Examples of structural style and synrift sedimentary responsefrom theSues rift,Sinai,Egypt.GeologicalSociety ofAmericaBulletin,112(12):1877-1899.
- JerveyM T.1988.Quantitative geological modeling of siliciclasticrock sequence and their seismic expression.In:WilgusC K,HastingsB S,KendallC G StC,PosamentierH W,RossC A&VanWagonerJ C eds.Sea level changes:an integratedapproach.SEPM SpecialPublication,42:47-70.
- HowellJ A &StephenS Fint.1996.A model for high resolutionsequence stratigraphy within extensional basins.GeologicalSocietySpecial,104:129-137.
- Posam entierH W &AllenG P.1993.Variability of the sequencestratigraphic model:effects of local basin factors.SedimentaryGeology,86:91-109.
- Posam entierH W &AllenG P.1999.F undamental concepts ofsequence stratigraphy.In:Siliciclastic sequence stratigraphy:concepts and applications,SEPM Concepts inSedim entologyandPaleontology,7:9-50.
- Posam entierH W &VailP R.1988.Eustatic controls on classicdepodition-sequence and systems tractmodels,In:WilgusCK,HastingsB S,KendallC G StC,PosamentierH W,RossCA,&VanWagonerJC eds.Sea level changes:an integratedapproach.SEPM SpecialPublication,42:125-154.
- RavnasR &SteelR J.1998.Architecture of marine rift-basinsuccessions.AAPG Bulletin,82(1):110-145.
- StewartS A.2001.Displacement distributions on extensionalfaults:Implications for faultstretch,linkage,and seal.AAPGBulletin,85(4):587-599.
- WalshJ J &WattersonJ.1988.Analysis of the relationshipbetween displacements and dimensions of faults.Journal ofStructuralGeology,10:1039-1046