金湖凹陷铜城断裂带断层活动特征
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摘要
通过地震和地质资料解析,分析了铜城断裂带的构造特征,讨论了构造演化阶段及特征。研究表明,铜城断裂带多发育北东走向的断裂构造,阜宁期和三垛期是断层集中发育的阶段,阜宁期掀斜旋转明显,断块、断鼻构造发育。铜城断裂带新生代断层活动性表现出强弱交替的特征,断层活动性复杂。阜宁期断层活动性加强,戴南期相对较弱,三垛期断裂活动又增强,此后,断层活动基本停止。铜城断层两侧地层差异沉降明显。铜城断裂带构造演化经历断块发育期(E1f)、差异沉降期(E2d—E2s)、逆冲褶断期(E2s末期)、构造稳定期(Ny—Qd)等4个时期。在吴堡运动、三垛运动的叠加与早期基底断层的共同作用下,铜城断裂带形成断鼻构造、复杂断块构造及弧形断层圈闭,为油气聚集提供良好的场所。
According to the interpretation of information of seismology and geology,structural features of Tongcheng fault zone is analyzed; the features and the stages of tectonic evolution are discussed. The research shows that the Tongcheng fault zone mainly develops NE-SW strike faults.Most faults are formed in the Funing period and Sanduo period. Tilt rotation of the blocks is obvious. The structures of fault block and fault nose are developed. Cenozoic tectonic activity shows alternating strong and weak characteristics, and fault activity is complex. The intensity of fault activity in Funing phase is gradually strengthened,and become relatively weak in Dainan period,In the Sanduo phase fault activity enhances,then fault activity largely discontinues. The differential fluctuation in Tongcheng fault is obvious on both sides of strata. Tectonic evolution of Tongcheng fault zone can be divided into four period: fault block development stage( Funing period),differential fluctuation stage( Dainan and Sanduo period),overthrust folded stage( Late Sanduo period),structure stable stage( Neogene and Quaternary). With the superposition of Wubao movement,Sanduo movement and early influence of basement faults,Tongcheng fault zone causes the development of fault nose structure,complex fault block structure and arc fault trap,which provides good places for oil-gas accumulation.
According to the interpretation of information of seismology and geology,structural features of Tongcheng fault zone is analyzed; the features and the stages of tectonic evolution are discussed. The research shows that the Tongcheng fault zone mainly develops NE-SW strike faults.Most faults are formed in the Funing period and Sanduo period. Tilt rotation of the blocks is obvious. The structures of fault block and fault nose are developed. Cenozoic tectonic activity shows alternating strong and weak characteristics, and fault activity is complex. The intensity of fault activity in Funing phase is gradually strengthened,and become relatively weak in Dainan period,In the Sanduo phase fault activity enhances,then fault activity largely discontinues. The differential fluctuation in Tongcheng fault is obvious on both sides of strata. Tectonic evolution of Tongcheng fault zone can be divided into four period: fault block development stage( Funing period),differential fluctuation stage( Dainan and Sanduo period),overthrust folded stage( Late Sanduo period),structure stable stage( Neogene and Quaternary). With the superposition of Wubao movement,Sanduo movement and early influence of basement faults,Tongcheng fault zone causes the development of fault nose structure,complex fault block structure and arc fault trap,which provides good places for oil-gas accumulation.
引文
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[18]刘世丽,胡爱玉,李书瑜.金湖凹陷石港断裂带断层封闭性研究[J].海洋石油,2007,26(4):34~38.LIU Shi-li,HU Ai-yu,LI Shu-yu.Study on the faults sealing properties of Shigang fault zone in Jinhu Depression[J].Offshore Oil,2007,26(4):34~38.
[19]能源,漆家福,张春峰,等.金湖凹陷断裂特征及其石油地质意义[J].大地构造与成矿学,2012,36(1):16~23.NENG Yuan,QI Jia-fu,ZHANG Chun-feng,et al.Structural features of the Jinhu sag in the Subei Basin and its petroleum geological significance[J].Geotectonica Et Metallogenia,2012,36(1):16~23.
[2]赵勇,戴俊生.应用落差分析研究生长断层[J].石油勘探与开发,2003,30(3):13~15.ZHAO Yong,DAI Jun-sheng.Identification of growth fault by fault fall analysis[J].Petroleum Exploration and Development,2003,30(3):13~15.
[3]卢异,王书香,陈松,等.一种断裂活动强度计算方法及其应用[J].天然气地球科学,2010,21(4):612~616.LU Yi,WANG Shu-xiang,CHEN Song,et al.Computing method about intensity of fault activity and its application[J].Natural Gas Geoscience,2010,21(4):612~616.
[4]陈刚,戴俊生,叶兴树,等.生长指数与断层落差的对比研究[J].西南石油大学报,2007,29(3):20~23.CHEN Gang,DAI Jun-sheng,YE Xing-shu,et al.A comparison of the fault growth index with fault throw[J].Journal of Southwest Petroleum University,2007,29(3):20~23.
[5]叶兴树,王伟锋,戴俊生,等.东营凹陷沙三—东营期断裂活动特征[J].中国石油大学学报:自然科学版,2006,30(4):7~11.YE Xing-shu,WANG Wei-feng,DAI Jun-sheng,et al.Characteristics of fault activities of Sha-3 Member and Dongying periods in Dongying depression[J].Journal of China University of Petroleum:Natural Science Edition,2006,30(4):7~11.
[6]马晓鸣,戴俊生.应用落差分析研究高邮凹陷南断阶主控断层[J].西安石油大学学报:自然科学版,2007,22(4):31~34.MA Xiao-ming,DAI Jun-sheng.Study on the control faults in south fault terrace of Gao you Sag by fault throw analysis[J].Journal of Xi’an Shi You University:Natural Science Edition,2007,22(4):31~34.
[7]叶绍东.金湖凹陷铜城断层构造特征与油气成藏[J].地质力学学报,2012,18(2):187~194.YE Shao-dong.Study on the control faults in south fault terrace of Gaoyou sag by fault throw analysis[J].Journal of Geomechanics,2012,18(2):187~194.
[8]Dahlstrom C D A.Balanced cross sections[J].Canadian Journal of Earth Sciences,1969,6(4):743~757.
[9]De Paor D G.Balanced section in thrust belts part 1:Construction[J].AAPG Bulletin,1988,72(1):73~90.
[10]戴俊生,李理.油区构造分析[M].青岛:中国石油大学出版社,2002:92~95.DAI Jun-sheng,LI Li.Structural analysis of oil province[M].Qingdao:China University of Petroleum Press,2002:92~95.
[11]王运所,刘亚洲,张孝义,等.平衡剖面的制作流程及其地质意义[J].长安大学学报:地球科学版,2003,25(1):28~32.WANG Yun-suo,LIU Ya-zhou,ZHANG Xiao-yi,et al.Flow diagram and the geological significance of balance section[J].Journal of Chang’an University:Earth Science Edition,2003,25(1):28~32.
[12]戴俊生,马欣本,王志云,等.闵桥油田阜宁组的构造特征和构造演化[J].大地构造与成矿学,2002,26(2):126~130.DAI Jun-sheng,MA Xin-ben,WANG Zhi-yun,et al.Tectonic characteristic and tectonic evolution of the Funing Formation in Minqiao oilfield[J].Geotectonic et Metallogenia,2002,26(2):126~130.
[13]王霞田,戴俊生,解俊昱.高邮凹陷沙埝断块区的构造特征和构造演化[J].西安石油大学学报:自然科学版,2009,24(2):43~46.WANG Xia-tian,DAI Jun-sheng,XIE Jun-yu.Structural characteristics and structural evolution of Shanian Block area in Gaoyou sag[J].Journal of Xi’an Shiyou University:Natrual Science,2009,24(2):43~46.
[14]王福焕,王振宇,张云峰,等.轮古东奥陶系断裂特征及其对油气成藏的控制[J].中国石油勘探,2011,16(1):15~20.WAGN Fu-huan,WANG Zhen-yu.ZHANG Yun-feng,et al.Fault characteristics and their controlling roles to hydrocarbon pool-formation of Ordovician in eastern Lungu[J].China Petroleum Exploration,2011,16(1):15~20.
[15]于俊吉,罗群,张多军,等.北部湾盆地海南福山凹陷断裂特征及其对油气成藏的控制作用[J].石油实验地质,2004,26(3):241~248.YU Jun-ji,LUO Qun,ZHANG Duo-jun,et al.Characteristics of faults in the Fushan depression of Hainan,the Beibuwan Basin and their controlling roles to hydrocarbon pool-formation[J].Petroleum Geology&Experiment,2004,26(3):241~248.
[16]蔡佑星.济阳坳陷断裂发育特征及其对油气成藏的控制作用[J].天然气地球科学,2008,19(1):56~61.CAI You-xing.Characteristics of fault developed in Jiyang sag and its control over hydrocarbon migration and accumulation[J].Natural Gas Geoscience,2008,19(1):56~61.
[17]方向,江波,张永庶.柴达木盆地西部地区断裂构造与油气聚集[J].石油与天然气地质,2006,27(1):56~61.FANG Xiang,JIANG Bo,ZHANG Yong-shu.Faulted structure and hydrocarbon accumulation in western Qaidam basin[J].Oil&Gas Geology,2006,27(1):56~61.
[18]刘世丽,胡爱玉,李书瑜.金湖凹陷石港断裂带断层封闭性研究[J].海洋石油,2007,26(4):34~38.LIU Shi-li,HU Ai-yu,LI Shu-yu.Study on the faults sealing properties of Shigang fault zone in Jinhu Depression[J].Offshore Oil,2007,26(4):34~38.
[19]能源,漆家福,张春峰,等.金湖凹陷断裂特征及其石油地质意义[J].大地构造与成矿学,2012,36(1):16~23.NENG Yuan,QI Jia-fu,ZHANG Chun-feng,et al.Structural features of the Jinhu sag in the Subei Basin and its petroleum geological significance[J].Geotectonica Et Metallogenia,2012,36(1):16~23.
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