东营凹陷盐-泥构造的样式和成因机制分析
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摘要
以地震剖面的精细解释为基础,借鉴典型盐或泥构造的研究成果,文中确立了东营凹陷盐-泥构造样式:盐-泥枕构造、盐-泥滚—滑脱断层簇—滚动背斜构造、盐-泥核背斜—拱顶断层簇构造。区域伸展作用下的重力滑动作用是东营凹陷盐-泥构造的主导成因机制。重力滑动作用表现为触发盐-泥层的聚集—隆升和引起薄皮滑脱作用。由此文中将盐-泥构造演化历程划分为盐-泥枕发育期和滑脱断层—盐-泥滚—盐-泥核背斜发育期。最终建立了东营凹陷盐-泥构造的成因-演化模式。
Salt-mud tectonics is a kind of tectonics resulted from the distortion of salt-mud bed flow,which is significantly different from pure salt or mud tectonics. Based on the detailed interpretation of seismic profiles with a seismic net spacing of almost 2 km, we have distinguished and defined the following salt-mud tectonic styles in the Dongying Depression: salt-mud pillow, salt-mud roller-detachment fault-rollover anticline and salt-mud core anticline-keystone fault family. The triggering mechanism for the salt-mud tectonics was gravitational gliding accompanying regional extension. Salt-mud bed accumulation and upwelling and thin-skinned detachment led to gravitational gliding. Consequently, the evolution of salt-mud tectonics may be divided into two stages: (1) a salt-mud pillow developing stage (before SB6'); (2) a detachment fault, salt-mud roller and salt-mud-core anticline developing stage (after SB6').
Salt-mud tectonics is a kind of tectonics resulted from the distortion of salt-mud bed flow,which is significantly different from pure salt or mud tectonics. Based on the detailed interpretation of seismic profiles with a seismic net spacing of almost 2 km, we have distinguished and defined the following salt-mud tectonic styles in the Dongying Depression: salt-mud pillow, salt-mud roller-detachment fault-rollover anticline and salt-mud core anticline-keystone fault family. The triggering mechanism for the salt-mud tectonics was gravitational gliding accompanying regional extension. Salt-mud bed accumulation and upwelling and thin-skinned detachment led to gravitational gliding. Consequently, the evolution of salt-mud tectonics may be divided into two stages: (1) a salt-mud pillow developing stage (before SB6'); (2) a detachment fault, salt-mud roller and salt-mud-core anticline developing stage (after SB6').
引文
①杨瑞琪.东营盆地下第三系两套塑性地层与塑性层构造.胜利油田勘探开发研究报告集(11),1981.
[1]JACKSON MP A,ROBERTS D G,SNELSONS.Salt Tec-tonics:A Global Perspective[C].AAPG Memoir65,1995:1-300.
[2]ALSOP G I,BLUNDELL D,DAVISONI.Salt Tectonics[M].Geological Society Special Publication,100.London:The Geological Society,1996:1-303.
[3]STEWART S A,HARVEY MJ,OTTO S C,et al.Influ-ence of salt onfault geometry:Example fromthe UKsalt ba-sins[A].ALSOP G I,BLUNDELL D,DAVISON I.Salt Tectonics[M].Geological Society Special Publication,100.London:The Geological Society,1996:175-264.
[4]MORLEY C K,GUERI N G.Comparison of gravity-driven deformation styles and behavior associated with mobile shales and salt[J].Tectonics,1996,15(6):1154-1170.
[5]JACKSON M P A,TALBOT C J.External shapes,strain rates,and dynamics of salt structures[J].Geological Society of America Bulletin,1986,97:305-323.
[6]GE Hongxing,JACKSON MP A.Salt structures,hydrocar-bon traps and mineral deposits[J].Journal of Nanjing Uni-versity(Natural Sciences),1996,32(4):640-649(in Chi-nese).
[7]WEIJERMARS R,JACKSON MP A,VENDEVILLE B C.Rheological and tectonic modeling of salt provinces[J].Tec-tonophysics,1993,217:143-174.
[8]FEI Qi,WANG Xiepei.A preli minary study on diapiric structure in oil and gas-bearing basins in eastern China[J].Oil and Gas Geology,1982,3(2):113-123(in Chinese).
[9]GE Hongxing,VENDEVILLE B C,JACKSON MP A.Salt tectonicsin the Dongying and Dongpu depressions,Bohai Bay Basin,China—Anewinterpretation based on physical model-ing results[A].International Geological Congress30,Ab-stracts,Resumes30[C].1996,2:288.
[10]JACKSON MP A,VENDEVILLE B C.Regional extension as a geologic trigger for diapirism[J].Geological Society of America Bulletin,1994,106:57-73.
[11]JACKSON MP A.Retrospective salt tectonics[A].JACK-SON MP A,ROBERTS D G,SNELSONS.Salt Tectonics:A Global Perspective[C].AAPG Memoir65,1995:1-28.
[12]WITHJACK M O,CALLAWAY S.Active normal faulting beneath a salt layer:An experi mental study of deformation patterns in the cover sequence[J].AAPG Bulletin,2000,84(5):627-651.
[13]DEMERCI AN S,SZATMARI P,COBBOLD P R.Style and pattern of salt diapers due to thin-skinned gravitational gli-ding,Campos and Santos basins,offshore Brazil[J].Tec-tonophysics,1993,228:393-433.
[14]COWARD M,STEWART S.Salt-influenced structures in the Mesozoic-Tertiary cover of the U.K.Southern North Sea[A].JACKSON M P A,ROBERTS D G,SNELSON S.Salt Tectonics:A Global Perspective[C].AAPG Memoir65,1995:229-250.
[15]SCHUSTER D C.Deformation of Allochthonous salt and e-volution of related salt-structural systems,Eastern Lousiana Gulf Coast[A].JACKSON MP A,ROBERTS D G,SNEL-SON S.Salt Tectonics:A Global Perspective[C].AAPG Memoir65,1995:177-198.
[16]SPATHOPOULOS F.Aninsight on salt tectonicsin the An-gola Basin,South Atlantic[A].ALSOP GI,BLUNDELL D J,DAVISON D J.Salt Tectonics[M].Geological Society Special Publication,100.London:The Geological Society,1996:153-174.
[17]HAFID M.Triassic-early extensional systems and their Ter-tiary inversion,Essaouira Basin(Morocco)[J].Marine and Petroleum Geology,2000,17:409-429.
[18]WALTHAM D.Why does salt start to move[J]?Tectono-physics,1997,282:117-128.
[19]KOYI H,JENYON M K,PETERSEN K.The effect of basement faulting on diapirism[J].Journal of Petroleum Geology,1993,16(3):285-312.
[6]戈红星,JACKSON MP A.盐构造与油气圈闭及其综合利用[J].南京大学学报,1996,32(4):640-649.
[8]费琪,王燮培.初论中国东部含油气盆地的底辟构造[J].石油与天然气地质,1982,3(2):113-123.
[1]JACKSON MP A,ROBERTS D G,SNELSONS.Salt Tec-tonics:A Global Perspective[C].AAPG Memoir65,1995:1-300.
[2]ALSOP G I,BLUNDELL D,DAVISONI.Salt Tectonics[M].Geological Society Special Publication,100.London:The Geological Society,1996:1-303.
[3]STEWART S A,HARVEY MJ,OTTO S C,et al.Influ-ence of salt onfault geometry:Example fromthe UKsalt ba-sins[A].ALSOP G I,BLUNDELL D,DAVISON I.Salt Tectonics[M].Geological Society Special Publication,100.London:The Geological Society,1996:175-264.
[4]MORLEY C K,GUERI N G.Comparison of gravity-driven deformation styles and behavior associated with mobile shales and salt[J].Tectonics,1996,15(6):1154-1170.
[5]JACKSON M P A,TALBOT C J.External shapes,strain rates,and dynamics of salt structures[J].Geological Society of America Bulletin,1986,97:305-323.
[6]GE Hongxing,JACKSON MP A.Salt structures,hydrocar-bon traps and mineral deposits[J].Journal of Nanjing Uni-versity(Natural Sciences),1996,32(4):640-649(in Chi-nese).
[7]WEIJERMARS R,JACKSON MP A,VENDEVILLE B C.Rheological and tectonic modeling of salt provinces[J].Tec-tonophysics,1993,217:143-174.
[8]FEI Qi,WANG Xiepei.A preli minary study on diapiric structure in oil and gas-bearing basins in eastern China[J].Oil and Gas Geology,1982,3(2):113-123(in Chinese).
[9]GE Hongxing,VENDEVILLE B C,JACKSON MP A.Salt tectonicsin the Dongying and Dongpu depressions,Bohai Bay Basin,China—Anewinterpretation based on physical model-ing results[A].International Geological Congress30,Ab-stracts,Resumes30[C].1996,2:288.
[10]JACKSON MP A,VENDEVILLE B C.Regional extension as a geologic trigger for diapirism[J].Geological Society of America Bulletin,1994,106:57-73.
[11]JACKSON MP A.Retrospective salt tectonics[A].JACK-SON MP A,ROBERTS D G,SNELSONS.Salt Tectonics:A Global Perspective[C].AAPG Memoir65,1995:1-28.
[12]WITHJACK M O,CALLAWAY S.Active normal faulting beneath a salt layer:An experi mental study of deformation patterns in the cover sequence[J].AAPG Bulletin,2000,84(5):627-651.
[13]DEMERCI AN S,SZATMARI P,COBBOLD P R.Style and pattern of salt diapers due to thin-skinned gravitational gli-ding,Campos and Santos basins,offshore Brazil[J].Tec-tonophysics,1993,228:393-433.
[14]COWARD M,STEWART S.Salt-influenced structures in the Mesozoic-Tertiary cover of the U.K.Southern North Sea[A].JACKSON M P A,ROBERTS D G,SNELSON S.Salt Tectonics:A Global Perspective[C].AAPG Memoir65,1995:229-250.
[15]SCHUSTER D C.Deformation of Allochthonous salt and e-volution of related salt-structural systems,Eastern Lousiana Gulf Coast[A].JACKSON MP A,ROBERTS D G,SNEL-SON S.Salt Tectonics:A Global Perspective[C].AAPG Memoir65,1995:177-198.
[16]SPATHOPOULOS F.Aninsight on salt tectonicsin the An-gola Basin,South Atlantic[A].ALSOP GI,BLUNDELL D J,DAVISON D J.Salt Tectonics[M].Geological Society Special Publication,100.London:The Geological Society,1996:153-174.
[17]HAFID M.Triassic-early extensional systems and their Ter-tiary inversion,Essaouira Basin(Morocco)[J].Marine and Petroleum Geology,2000,17:409-429.
[18]WALTHAM D.Why does salt start to move[J]?Tectono-physics,1997,282:117-128.
[19]KOYI H,JENYON M K,PETERSEN K.The effect of basement faulting on diapirism[J].Journal of Petroleum Geology,1993,16(3):285-312.
[6]戈红星,JACKSON MP A.盐构造与油气圈闭及其综合利用[J].南京大学学报,1996,32(4):640-649.
[8]费琪,王燮培.初论中国东部含油气盆地的底辟构造[J].石油与天然气地质,1982,3(2):113-123.
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