走滑应变椭圆模型的改进及应用举例
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摘要
剪切带带内某些次级应变与现有走滑应变椭圆的7类应变要素(PDZ,R,R′,P,T,Y破裂及局部挤压变形)难以准确对应。为解决这一问题,以右行走滑为例,通过理论推导与试验模拟,深入研究次级应变表现出的应变性质,并据此提出包含所有应变性质组合(8类)的完全分类模型。该模型包括4个单纯性质的应变带(纯右行走滑、纯左行走滑、纯挤压和纯伸展应变带)和4个复合性质的应变区(伸展兼右行走滑、伸展兼左行走滑、挤压兼左行走滑和挤压兼右行走滑应变区)。复合性质应变区中,越靠近单纯性质方向的应变,产生相应性质的动力就越强。该模型在理论上论证了传统走滑模型的合理性并弥补其空缺部分。同时,举3个渤海的研究实例说明该模型改进后的应用:①莱州湾凹陷东北洼挤压与伸展作用共控成圈,说明走滑带内的挤压与伸展应力场同步持续、相互垂直的时空关系,以及二者的统一而非矛盾的辩证关系;②渤海走滑转换带的研究成果,说明走滑带内伸展或挤压型转换带的应变走向规律;③渤海某潜山油田的有效裂缝研究成果,说明有效裂缝的走向与现今走滑应力场中的伸展应变区对应的关系。
For some strain in the strike slip zone is difficult to be determined accurately in the classification scheme of the 7 elements of the ellipse of the strike slip strain ellipse(PDZ,R,R',P,T,Y and local contraction),the properties of the strain elements in all directions in the strained ellipse were reunderstood by analyzing the causal relationship between the mechanical state and the strain properties in a certain direction. A new model of the Riedel shear system was proposed,which contained 4 pure strain zones(pure right walk slip,pure left walking slip,pure extrusion,pure Stretch Strain Zone)and 4 complex strain zones(both stretching and right walking,both stretching and left walking,both extrusion and left walking,both extrusion and right walking slip strain zone). The closer the crack was to the direction of a single strain band,the stronger the corresponding property. The model included all the elements of the traditional model and made up for its vacancy. It proved the rationality of the left(right)row left(right)order and the double tectonic belt rule. At the same time,three research examples of Bohai Sea were cited to illustrate the application of the model:(1)The synchronous and perpendicular spatial-temporal relationship between compressive and extensional stress fields in strike-slip zones,as well as the unified but not contradictory dialectical relationship between them,were illustrated through the example of the co-controlled cycle formation of northeastern depression in Laizhou Bay Depression;(2)The Bohai Sea walk was enumerated. The research results of the slip transition zone illustrated the strain trend law of the extensional or compressive transition zone in the strike-slip zone;(3)The relationship between the strike of the effective fracture and the extensional strain zone in the present strike-slip stress field was illustrated by giving an example of the effective fracture research results of a buried hill structure in the Bohai Sea.
For some strain in the strike slip zone is difficult to be determined accurately in the classification scheme of the 7 elements of the ellipse of the strike slip strain ellipse(PDZ,R,R',P,T,Y and local contraction),the properties of the strain elements in all directions in the strained ellipse were reunderstood by analyzing the causal relationship between the mechanical state and the strain properties in a certain direction. A new model of the Riedel shear system was proposed,which contained 4 pure strain zones(pure right walk slip,pure left walking slip,pure extrusion,pure Stretch Strain Zone)and 4 complex strain zones(both stretching and right walking,both stretching and left walking,both extrusion and left walking,both extrusion and right walking slip strain zone). The closer the crack was to the direction of a single strain band,the stronger the corresponding property. The model included all the elements of the traditional model and made up for its vacancy. It proved the rationality of the left(right)row left(right)order and the double tectonic belt rule. At the same time,three research examples of Bohai Sea were cited to illustrate the application of the model:(1)The synchronous and perpendicular spatial-temporal relationship between compressive and extensional stress fields in strike-slip zones,as well as the unified but not contradictory dialectical relationship between them,were illustrated through the example of the co-controlled cycle formation of northeastern depression in Laizhou Bay Depression;(2)The Bohai Sea walk was enumerated. The research results of the slip transition zone illustrated the strain trend law of the extensional or compressive transition zone in the strike-slip zone;(3)The relationship between the strike of the effective fracture and the extensional strain zone in the present strike-slip stress field was illustrated by giving an example of the effective fracture research results of a buried hill structure in the Bohai Sea.
引文
[1] Wilcox Ronald E,Harding T P,Seely D R. Basic wrench tectonics[J]. AAPG Bulletin,1973,57(1):74-96.
[2] Harding P T. Petroleum traps associated with wrench faults[J].Bulletin of the American Association of Petroleum Geologists,1974,58(7):1 290-1 304.
[3] Allen Philip A,Allen John R. Basin Analysis:Principles and Application to Petroleum Play Assessment[M]. London:John Wiley&Sons,2013.
[4] Davis George H,Bump Alexander P,Garc??a??Pilar E,et al.Conjugate Riedel deformation band shear zones[J]. Journal of Structural Geology,2000,22(2):169-190.
[5] Qi Jiafu,Xia Yiping,Yang Qiao. Structural Analysis of Oil Region[M]. Beijing:Petroleum Industry Press,2006.[漆家福,夏义平,杨桥.油区构造解析[M].北京:石油工业出版社,2006.]
[6] Flodin Eric A,Aydin Atilla. Evolution of a strike-slip fault network,Valley of Fire State Park,southern Nevada[J]. Geological Society of America Bulletin,2004,116(1/2):42-59.
[7] Vander Pluijm Ben A,Stephen Marshak. Earth Structure—An Introduction to Structural Geology and Tectonics[M]. New York:Norton,2004.
[8] Liu Chao,Li Wei,Wu Zhiping,et al. Development characteristics of the cenozoic fault system and basin evolution of Bonan area in Bohai Sea[J]. Geological Journal of China Universities,2016,22(2):317-326.[刘超,李伟,吴智平,等.渤海海域渤南地区新生代断裂体系与盆地演化[J].高校地质学报,2016,22(2):317-326.]
[9] Huang Lei. Tectonic Characteristics and Evolution of Bohai Sea and Theri Effect on Oil and Gas Occurrence During Neogene[D]. Xi'an:Northwestern University,2014.[黄雷.渤海海域新近纪以来构造特征与演化及其油气赋存效应[D].西安:西北大学,2014.]
[10] Richard P,Mocquet B,Cobbold R P. Experiments on simultaneous faulting and folding above a basement wrench fault[J].Tectonophysics,1991,188(1):133-141.
[11] Tron Virginie,Brun Jean Pierre. Experiments on oblique rifting in brittle-ductile systems[J]. Tectonophysics,1991,188(1):71-84.
[12] Ustaszewski Kamil,Schumacher Markus E,Schmid Stefan M,et al. Fault reactivation in brittle-viscous wrench systemsdynamically scaled analogue models and application to the Rhine-Bresse transfer zone[J]. Quaternary Science Reviews,2005,24(3):363-380.
[13] Tong Hengmao,Fan Caiwei,Meng Lingjian,et al. Manifestation and origin mechanism of the fault systerm complexity in rift basin in Eastern-South China:Case study of the Nanbu and Weixinan Sags[J]. Acta Geologica Sinica,2018,92(9):1 753-1 765.[童亨茂,范彩伟,孟令箭,等.中国东—南部裂陷盆地断裂系统复杂性的表现形式及成因机制——以南堡凹陷和涠西南凹陷为例[J].地质学报,2018,92(9):1 753-1 765.]
[14] Cembrano J,González G,Arancibia G,et al. Fault zone development and strain partitioning in an extensional strike-slip duplex:A case study from the Mesozoic Atacama fault system,Northern Chile[J]. Tectonophysics,2005,400(1):105-125.
[15] Cox S J D,Scholz C H. On the formation and growth of faults:An experimental study[J]. Journal of Structural Geology,1988,10(4):413-430.
[16] Naylor M A,Mandl G,Supesteijn C H K. Fault geometries in basement-induced wrench faulting under different initial stress states[J]. Journal of Structural Geology,1986,8(7):737-752.
[17] Guerroue L E,Cobbold E R. Influence of erosion and sedimentation on strike-slip fault systems:Insights from analogue models[J]. Journal of Structural Geology,2006,28(3):421-430.
[18] Ghosh N,Chattopadhyay A. The initiation and linkage of surface fractures above a buried strike-slip fault:An experimental approach[J]. Journal of Earth System Science,2008,117(1):23-32.
[19] Swanson Mark T. Late Paleozoic strike-slip faults and related vein arrays of Cape Elizabeth,Maine[J]. Journal of Structural Geology,2006,28(3):456-473.
[20] Li Yanyou,Qi Jiafu,Zhou Shang. Differential deformation and its main controls on strike-slip structures[J]. Petroleum Geoloty&Experiment,2017,39(5):711-715.[李艳友,漆家福,周赏.走滑构造差异变形特征及其主控因素分析——基于砂箱模拟实验[J].石油实验地质,2017,39(5):711-715.]
[21] Qi Jiafu. Two tectonic systerms in the Cenozoic Bohai Bay Basin and their genetic interpretation[J]. Geology in China,2004,31(1):15-22.[漆家福.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,2004,31(1):15-22.]
[22] Xu Changgui. Strike-slip transfer zone and its controlon formation of medium and large-sized oilfields in Bohai Sea area[J].Earth Science,2016,41(9):1 548-1 560.[徐长贵.渤海走滑转换带及其对大中型油气田形成的控制作用[J].地球科学,2016,41(9):1 548-1 560.]
[23] Tong Kaijun,Zhao Chunming,LüZuobin,et al. Reservoir evaluation and fracture characterization of the metamorphic buried hill reservoir in Bohai Bay[J]. Petroleum Exploration and Development,2012,39(1):56-63.[童凯军,赵春明,吕坐彬,等.渤海变质岩潜山油藏储集层综合评价与裂缝表征[J].石油勘探与开发,2012,39(1):56-63.]
(1)吴智平.渤东、辽中南洼构造演化、成因机制及油气成藏主控因素研究.中国石油大学（华东）课题项目成果，2012.
(1)邓辉.郯庐断裂莱州湾段右行走滑的构造响应2019.
[2] Harding P T. Petroleum traps associated with wrench faults[J].Bulletin of the American Association of Petroleum Geologists,1974,58(7):1 290-1 304.
[3] Allen Philip A,Allen John R. Basin Analysis:Principles and Application to Petroleum Play Assessment[M]. London:John Wiley&Sons,2013.
[4] Davis George H,Bump Alexander P,Garc??a??Pilar E,et al.Conjugate Riedel deformation band shear zones[J]. Journal of Structural Geology,2000,22(2):169-190.
[5] Qi Jiafu,Xia Yiping,Yang Qiao. Structural Analysis of Oil Region[M]. Beijing:Petroleum Industry Press,2006.[漆家福,夏义平,杨桥.油区构造解析[M].北京:石油工业出版社,2006.]
[6] Flodin Eric A,Aydin Atilla. Evolution of a strike-slip fault network,Valley of Fire State Park,southern Nevada[J]. Geological Society of America Bulletin,2004,116(1/2):42-59.
[7] Vander Pluijm Ben A,Stephen Marshak. Earth Structure—An Introduction to Structural Geology and Tectonics[M]. New York:Norton,2004.
[8] Liu Chao,Li Wei,Wu Zhiping,et al. Development characteristics of the cenozoic fault system and basin evolution of Bonan area in Bohai Sea[J]. Geological Journal of China Universities,2016,22(2):317-326.[刘超,李伟,吴智平,等.渤海海域渤南地区新生代断裂体系与盆地演化[J].高校地质学报,2016,22(2):317-326.]
[9] Huang Lei. Tectonic Characteristics and Evolution of Bohai Sea and Theri Effect on Oil and Gas Occurrence During Neogene[D]. Xi'an:Northwestern University,2014.[黄雷.渤海海域新近纪以来构造特征与演化及其油气赋存效应[D].西安:西北大学,2014.]
[10] Richard P,Mocquet B,Cobbold R P. Experiments on simultaneous faulting and folding above a basement wrench fault[J].Tectonophysics,1991,188(1):133-141.
[11] Tron Virginie,Brun Jean Pierre. Experiments on oblique rifting in brittle-ductile systems[J]. Tectonophysics,1991,188(1):71-84.
[12] Ustaszewski Kamil,Schumacher Markus E,Schmid Stefan M,et al. Fault reactivation in brittle-viscous wrench systemsdynamically scaled analogue models and application to the Rhine-Bresse transfer zone[J]. Quaternary Science Reviews,2005,24(3):363-380.
[13] Tong Hengmao,Fan Caiwei,Meng Lingjian,et al. Manifestation and origin mechanism of the fault systerm complexity in rift basin in Eastern-South China:Case study of the Nanbu and Weixinan Sags[J]. Acta Geologica Sinica,2018,92(9):1 753-1 765.[童亨茂,范彩伟,孟令箭,等.中国东—南部裂陷盆地断裂系统复杂性的表现形式及成因机制——以南堡凹陷和涠西南凹陷为例[J].地质学报,2018,92(9):1 753-1 765.]
[14] Cembrano J,González G,Arancibia G,et al. Fault zone development and strain partitioning in an extensional strike-slip duplex:A case study from the Mesozoic Atacama fault system,Northern Chile[J]. Tectonophysics,2005,400(1):105-125.
[15] Cox S J D,Scholz C H. On the formation and growth of faults:An experimental study[J]. Journal of Structural Geology,1988,10(4):413-430.
[16] Naylor M A,Mandl G,Supesteijn C H K. Fault geometries in basement-induced wrench faulting under different initial stress states[J]. Journal of Structural Geology,1986,8(7):737-752.
[17] Guerroue L E,Cobbold E R. Influence of erosion and sedimentation on strike-slip fault systems:Insights from analogue models[J]. Journal of Structural Geology,2006,28(3):421-430.
[18] Ghosh N,Chattopadhyay A. The initiation and linkage of surface fractures above a buried strike-slip fault:An experimental approach[J]. Journal of Earth System Science,2008,117(1):23-32.
[19] Swanson Mark T. Late Paleozoic strike-slip faults and related vein arrays of Cape Elizabeth,Maine[J]. Journal of Structural Geology,2006,28(3):456-473.
[20] Li Yanyou,Qi Jiafu,Zhou Shang. Differential deformation and its main controls on strike-slip structures[J]. Petroleum Geoloty&Experiment,2017,39(5):711-715.[李艳友,漆家福,周赏.走滑构造差异变形特征及其主控因素分析——基于砂箱模拟实验[J].石油实验地质,2017,39(5):711-715.]
[21] Qi Jiafu. Two tectonic systerms in the Cenozoic Bohai Bay Basin and their genetic interpretation[J]. Geology in China,2004,31(1):15-22.[漆家福.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,2004,31(1):15-22.]
[22] Xu Changgui. Strike-slip transfer zone and its controlon formation of medium and large-sized oilfields in Bohai Sea area[J].Earth Science,2016,41(9):1 548-1 560.[徐长贵.渤海走滑转换带及其对大中型油气田形成的控制作用[J].地球科学,2016,41(9):1 548-1 560.]
[23] Tong Kaijun,Zhao Chunming,LüZuobin,et al. Reservoir evaluation and fracture characterization of the metamorphic buried hill reservoir in Bohai Bay[J]. Petroleum Exploration and Development,2012,39(1):56-63.[童凯军,赵春明,吕坐彬,等.渤海变质岩潜山油藏储集层综合评价与裂缝表征[J].石油勘探与开发,2012,39(1):56-63.]
(1)吴智平.渤东、辽中南洼构造演化、成因机制及油气成藏主控因素研究.中国石油大学（华东）课题项目成果，2012.
(1)邓辉.郯庐断裂莱州湾段右行走滑的构造响应2019.