渤海海域渤东地区断裂体系与盆地结构
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摘要
以渤东地区为研究对象,运用丰富的三维地震资料,文中将剖面特征分析与水平相干切片特征分析相结合,在对断裂体系精细刻画的基础上,建立了不同类型断裂的结构模式,分析了断裂的展布特征,并就断裂体系对盆地结构的控制作用进行了研究,结果表明:渤东地区新生代断裂体系发育特征吻合于郯庐断裂新生代右旋应力场,表现为以NNE向走滑断裂为主枝、以NE向拉张断裂为侧枝、近EW向断裂为细脉的特点,可以划分为走滑断裂、拉张-走滑断裂、走滑-拉张断裂和拉张断裂四种基本类型,受断裂性质和活动强度的影响,不同类型断裂的空间结构存在明显差异;受郯庐断裂左旋到右旋的转变、拉张作用与走滑作用强弱的转变、地幔上涌水平拉张到热沉降的转变等因素的影响,不同时期的断裂体系存在明显差异,依据断裂对盆地结构的控制作用,可将新生代盆地发育划分为左旋-右旋转换、走滑-拉张断陷、拉张-走滑断陷和走滑-拗陷4个不同的演化阶段。明确断裂的时空差异性对于渤东地区油气勘探具有重要指导意义。
Based on the detailed description of fault system,this paper established different types of fault structure patterns and analyzed the distribution characteristics of faults in the study area of Bodong by using abundant seismic data and combined analyses of sections and time slice characteristics.Furthermore,we carried out studies of the controlling role that fault system played on basin structures.It is concluded that the development characteristics of fault system in Cenozoic age was in accordance with the right lateral stress-field of Tanlu fault which is expressed as NNE-trending strike-slip faults for main branches,NEtrending tensional faults for secondary ones and near EW-trending faults for the least abundant ones.Also,faults can be subdivided into slip typed,tensional-slip,slip-tensional,and tensional types.Besides,different types of faults have different structures due to the effects of property and activity intensity.Fault system in different ages showed tremendous differences because of stress transition of Tanlu fault from left lateral to right lateral and intensity transition between tension and slip.According to the dominant impact that fault acted on basin structures,Cenozoic basin can be classified into four revolutionary stages,i.e.,transitional stage from left lateral to right lateral,slip-tension faulted stage,tension-slip faulted stage,and slipdepression stage.Therefore,the identification of temporal and spatial differences of faults could be used as an important guideline for the oil and gas exploration in Dodong area.
Based on the detailed description of fault system,this paper established different types of fault structure patterns and analyzed the distribution characteristics of faults in the study area of Bodong by using abundant seismic data and combined analyses of sections and time slice characteristics.Furthermore,we carried out studies of the controlling role that fault system played on basin structures.It is concluded that the development characteristics of fault system in Cenozoic age was in accordance with the right lateral stress-field of Tanlu fault which is expressed as NNE-trending strike-slip faults for main branches,NEtrending tensional faults for secondary ones and near EW-trending faults for the least abundant ones.Also,faults can be subdivided into slip typed,tensional-slip,slip-tensional,and tensional types.Besides,different types of faults have different structures due to the effects of property and activity intensity.Fault system in different ages showed tremendous differences because of stress transition of Tanlu fault from left lateral to right lateral and intensity transition between tension and slip.According to the dominant impact that fault acted on basin structures,Cenozoic basin can be classified into four revolutionary stages,i.e.,transitional stage from left lateral to right lateral,slip-tension faulted stage,tension-slip faulted stage,and slipdepression stage.Therefore,the identification of temporal and spatial differences of faults could be used as an important guideline for the oil and gas exploration in Dodong area.
引文
龚再升,蔡东升,张功成.2007.郯庐断裂对渤海海域东部油气成藏的控制作用[J].石油学报,28(4):1-10.
朱伟林,米立军,龚再升,等.2009.渤海海域油气成藏与勘探[M].科学出版社,142-295.
邓运华.2002.渤海油气勘探历程回顾[J].中国海上油气(地质),16(2):98-101.
张国良,姚长华,张云慧.2000.从石臼坨凸起浅层油气的重大发现看渤东地区的勘探潜力[J].中国海上油气(地质),14(2):84-92.
漆家福.2004.渤海湾新生代盆地的两种构造系统及其成因解释[J].中国地质,31(1):15-21.
陈凯,漆家福,刘震,等.2012.渤海海域渤东地区新生代断裂特征及对油气的控制[J].地质科技情报,31(1):63-71.
余一欣,周心怀,徐长贵,等.2011.渤海海域新生代断裂发育特征及形成机制[J].石油与天然气地质,32(2):273-279.
万桂梅,汤良杰,周心怀,等.2009.郯庐断裂带在渤海海域渤东地区的构造特征[J].石油学报,30(3):342-346.
漆家福,周心怀,王谦身.2010.渤海海域中郯庐深断裂带的结构模型及新生代运动学[J].现代地质,37(5):1231-1242.
漆家福,邓荣敬,周心怀,等.2008.渤海海域新生代盆地中的郯庐断裂带构造[J].中国科学(D辑),38(增刊):19-29.
李伟,吴智平,赵文栋.2010.渤海湾盆地区燕山期构造特征与盆地转型[J].地球物理学进展,25(6):206-207.
侯贵廷,钱祥麟,蔡东升.2001.渤海湾盆地中、新生代构造演化研究[J].北京大学学报(自然科学版),37(6):845-851.
侯贵廷,钱祥麟,宋新民.1998.渤海湾盆地形成机制研究[J].北京大学学报(自然科学版),34(4):503-509.
戚建中,刘红樱,姜耀辉.2000.中国东部燕山期俯冲走滑体制及其对成矿定位的控制[J].火山地质与矿产,21(4):244-265.
许浚远,张凌云.1999.欧亚板块东缘新生代盆地成因:右行剪切拉分作用[J].石油与天然气地质,20(3):187-191.
任建业,李思田.2000.西太平洋边缘海盆地的扩张过程和动力学背景[J].地学前缘,7(3):203-213.
何海清,王兆云,韩品龙.1998.华北地区构造演化对渤海湾油气形成和分布的控制[J].地质学报,72(4):313-322.
蔡东升,罗毓晖,武文来,等.2001.渤海浅层构造变形特征、成因机理与渤中坳陷及其周围油气富集的关系[J].中国海上油气(地质),15(1):35-43.
朱光,刘国生,W J Dunlap,等.2004.郯庐断裂带同造山走滑运动的40 Ar/39Ar年代学证据[J].科学通报,49(2):190-198.
朱光,刘国生,牛漫兰,等.2003.郯庐断裂带的平移运动与成因[J].地质通报,22(3):200-207.
史卜庆,吴智平,王纪祥,等.1999.渤海湾盆地东营运动的特征及成因分析[J].石油实验地质,21(3):196-200.
朱伟林,米立军,龚再升,等.2009.渤海海域油气成藏与勘探[M].科学出版社,142-295.
邓运华.2002.渤海油气勘探历程回顾[J].中国海上油气(地质),16(2):98-101.
张国良,姚长华,张云慧.2000.从石臼坨凸起浅层油气的重大发现看渤东地区的勘探潜力[J].中国海上油气(地质),14(2):84-92.
漆家福.2004.渤海湾新生代盆地的两种构造系统及其成因解释[J].中国地质,31(1):15-21.
陈凯,漆家福,刘震,等.2012.渤海海域渤东地区新生代断裂特征及对油气的控制[J].地质科技情报,31(1):63-71.
余一欣,周心怀,徐长贵,等.2011.渤海海域新生代断裂发育特征及形成机制[J].石油与天然气地质,32(2):273-279.
万桂梅,汤良杰,周心怀,等.2009.郯庐断裂带在渤海海域渤东地区的构造特征[J].石油学报,30(3):342-346.
漆家福,周心怀,王谦身.2010.渤海海域中郯庐深断裂带的结构模型及新生代运动学[J].现代地质,37(5):1231-1242.
漆家福,邓荣敬,周心怀,等.2008.渤海海域新生代盆地中的郯庐断裂带构造[J].中国科学(D辑),38(增刊):19-29.
李伟,吴智平,赵文栋.2010.渤海湾盆地区燕山期构造特征与盆地转型[J].地球物理学进展,25(6):206-207.
侯贵廷,钱祥麟,蔡东升.2001.渤海湾盆地中、新生代构造演化研究[J].北京大学学报(自然科学版),37(6):845-851.
侯贵廷,钱祥麟,宋新民.1998.渤海湾盆地形成机制研究[J].北京大学学报(自然科学版),34(4):503-509.
戚建中,刘红樱,姜耀辉.2000.中国东部燕山期俯冲走滑体制及其对成矿定位的控制[J].火山地质与矿产,21(4):244-265.
许浚远,张凌云.1999.欧亚板块东缘新生代盆地成因:右行剪切拉分作用[J].石油与天然气地质,20(3):187-191.
任建业,李思田.2000.西太平洋边缘海盆地的扩张过程和动力学背景[J].地学前缘,7(3):203-213.
何海清,王兆云,韩品龙.1998.华北地区构造演化对渤海湾油气形成和分布的控制[J].地质学报,72(4):313-322.
蔡东升,罗毓晖,武文来,等.2001.渤海浅层构造变形特征、成因机理与渤中坳陷及其周围油气富集的关系[J].中国海上油气(地质),15(1):35-43.
朱光,刘国生,W J Dunlap,等.2004.郯庐断裂带同造山走滑运动的40 Ar/39Ar年代学证据[J].科学通报,49(2):190-198.
朱光,刘国生,牛漫兰,等.2003.郯庐断裂带的平移运动与成因[J].地质通报,22(3):200-207.
史卜庆,吴智平,王纪祥,等.1999.渤海湾盆地东营运动的特征及成因分析[J].石油实验地质,21(3):196-200.
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