济阳坳陷侏罗纪岩相古地理演化特征
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摘要
在系统观察岩心的基础上并结合测井、地震等资料对济阳坳陷侏罗系岩相古地理演化特征及其控制作用进行了研究。结果表明,侏罗纪济阳坳陷为一受北西向断层控制而相互分割的山间盆地,早、中侏罗世以冲积平原和滨浅湖沉积为主,晚侏罗世以冲积平原沉积为主。对应于早-中侏罗世早期—早-中侏罗世中期—早-中侏罗世晚期—晚侏罗世早期—晚侏罗世晚期,北西向断层的活动依次表现为较强—弱—消失—极微弱—较强5个不同的阶段。相应的沉积表现为:在北西向断层的东北侧,扇三角洲-滨浅湖沉积体系逐渐演化为冲积扇-河流-三角洲沉积体系;在北西向断层的南西侧,冲积扇-河流-三角洲沉积体系不断向盆地中进积;滨浅湖发育范围逐渐变小,沉积中心逐渐向北西向断层的南西侧迁移。
According to core observation,a lot of well logging and seismic data,the evolution of lithofacies-paleogeography and its controlling factors of Jurassic in Jiyang depression were comprehensively studied.The results show that being primarily controlled by north-west faults,Jiyang depression contained several isolated basins druing Jurassic period.Coastal and shallow lake subfacies and alluvial plain sub-facies were dominant in early-middle Jurassic,and alluvial plain sub-facies were dominant in late Jurassic.During the early period of early-middle Jurassic,the middle period of early-middle Jurassic,the late period of early-middle Jurassic,the early period of late Jurassic,and the late period of late Jurassic,north-west faults were correspondingly in a more intense,weak,dormant,very weak,and more intense stage,and correspondingly depositional systems evolved from fan delta-coastal and shallow lake to alluvial fan-river-delta on east-north side of north-west faults,and alluvial fan-river-delta depositional systems extended toward the basins on west-south side of north-west faults.As a result,the area of coastal and shallow lake became smaller,and sedimentary centers moved toward the west-south sides of north-west faults.
According to core observation,a lot of well logging and seismic data,the evolution of lithofacies-paleogeography and its controlling factors of Jurassic in Jiyang depression were comprehensively studied.The results show that being primarily controlled by north-west faults,Jiyang depression contained several isolated basins druing Jurassic period.Coastal and shallow lake subfacies and alluvial plain sub-facies were dominant in early-middle Jurassic,and alluvial plain sub-facies were dominant in late Jurassic.During the early period of early-middle Jurassic,the middle period of early-middle Jurassic,the late period of early-middle Jurassic,the early period of late Jurassic,and the late period of late Jurassic,north-west faults were correspondingly in a more intense,weak,dormant,very weak,and more intense stage,and correspondingly depositional systems evolved from fan delta-coastal and shallow lake to alluvial fan-river-delta on east-north side of north-west faults,and alluvial fan-river-delta depositional systems extended toward the basins on west-south side of north-west faults.As a result,the area of coastal and shallow lake became smaller,and sedimentary centers moved toward the west-south sides of north-west faults.
引文
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[3]王毅,陆克政,任安身.济阳坳陷东北部中生代构造运动和火山活动及盆地演化[J].石油大学学报:自然科学版,1994,18(2):1-8.WANG Yi,LUKe-zheng,REN An-shen.Tectonism andvolcanism and the basin evolution of the Mesozoic era inthe north-east of Jiyang depression[J].Journal of the U-niversity of Petroleum,China(Edition of Natural Sci-ence),1994,18(2):1-8.
[4]宗国洪,肖焕钦,李常宝,等.济阳坳陷构造演化及其大地构造意义[J].高校地质学报,1999,5(3):275-282.ZONG Guo-hong,XIAO Huan-qin,LI Chang-bao,et al.E-volution of Jiyang depression and its tectonic implications[J].Geological Journal of China Universities,1999,5(3):275-282.
[5]吴智平,李伟,任拥军,等.济阳坳陷中生代盆地演化及其与新生代盆地叠合关系探讨[J].地质学报,2003,77(2):280-286.WU Zhi-ping,LI Wei,REN Yong-jun,et al.Basin evolu-tion in the Mesozonic and superposition of Cenozoic basinin the area of Jiyang depression[J].Acta Geologica Sin-ca,2003,77(2):280-286.
[6]GUPTA S,COWIE P.Processes and controls in the stra-tigraphy development of extensional basins[J].Basin Re-search,2000,20(3/4):185-194.
[7]山东省地质矿产局.山东省区域地质志[M].北京:地质出版社,1991:520-521.
[8]田在艺,张庆春.中国含油气盆地岩相古地理与油气[M].北京:地质出版社,1997.
[9]张功成,徐宏,王同和,等.中国含油气盆地构造[M].北京:石油工业出版社,1999:187-200.
[10]万天丰.中国东部中、新生代板内变形构造应力场及其应用[M].北京:地质出版社,1993:103.
[11]宗国洪,施央申,王秉海,等.济阳盆地中生代构造特征与油气[J].地质论评,1998,44(3):289-294.ZONG Guo-hong,SHI Yang-shen,WANG Bing-hai,etal.Mesozoic structures and their relations to hydrocar-bon traps in the Jiyang Basin[J].Geological Review,1998,44(3):289-294.
[12]侯贵廷,钱祥麟,宋新民.渤海湾盆地的形成机制[J].北京大学学报:自然科学版,1998,34(4):503-509.HOU Gui-ting,QIAN Xiang-lin,SONG Xin-min.Theorigin of Bohai Bay Basin[J].Universitatis Pekinensis(Acta Scientiarum Naturalium),1998,34(4):503-509.
[13]漆家福,于福生,陆克政,等.渤海湾地区的中生代盆地构造概论[J].地学前缘,2003,10(特刊):199-206.QI Jia-fu,YUFu-sheng,LUKe-zheng,et al.Conspec-tus on Mesozoic basins in Bohai bay province[J].EarthScience Frontiers,2003,10(sup):199-206.
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