济阳坳陷东部垦东-孤东潜山带走滑断层特征与成因分析
摘要
济阳坳陷东部垦东-孤东潜山带是胜利油田重要的油气产区,对该区带内走滑断层特征及形成机制的研究有助于分析走滑活动对油气聚集成藏的影响。为此,通过地震剖面精细解释和相干切片分析,综合研究了济阳坳陷东部走滑断层在剖面上与平面上的特征。结果表明,在剖面上发育明显的负花状构造,而在平面上则伴生一系列雁行断层,这些断层与走滑断层呈45°斜交,形成"入"字型形态。通过区域构造背景以及走滑成因分析,明确了该区走滑断层的形成机制:在始新世中期,由于太平洋板块向西斜向俯冲于欧亚板块之下,加上印度洋板块北东向的推挤,中国东部处于北东-南西向的挤压之下,受南部青坨子和陈家庄凸起的限制,垦东-孤东潜山带发生逆时针旋转,由于各潜山距离旋转中心的距离不同,相邻块体之间扭动程度存在差异,潜山带的分界断层分段扭动而发生相对滑移,最终演化成走滑断层。
引文
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[3]张云银.郯庐断裂带含油气性研究[J].石油实验地质,2003,25(1):28-38Zhang Y Y.A study of hydrocarbon-bearing charac-teristics in the Tancheng-Lujiang fault zone[J].Pe-troleum Geology&Experiment,2003,25(1):28-38
[4]Harding T P.Seismic characteristics and identifica-tion of negative flower structures,positive flowerstructure and positive structural inversion[J].A-merican Association of Petroleum Geologists Bulle-tin,1985,69:582-600
[5]Wilcox R E,Harding T P,Seely D R.Basic wrenchtectonics[J].American Association of PetroleumGeologists Bulletin,1973,57:74-96
[6]Northrup C J,Royden L H,Burchfiel B C.Motion ofthe Pacific plate relative to Eurasia and its potentialrelation to Cenozoic extension along the eastern mar-gin of Eurasia[J].Geology,1995,23(8),719-722
[7]Allen M B,Macdonald D I M,Xun Z,et al.Early Ce-nozoic two-phase extension and late Cenozoic ther-mal subsidence and inversion of the Bohai Basin,northern China[J].Marine and Petroleum Geology,1997,14:951-972
[8]Zhang Y Q,Shi W,Dong S W.Cenozoic deformationhistory of the Tancheng-Lujiang Fault Zone,northChina,and dynamic implications[J].The Island Arc,2003,12:281-293
[9]Schellart W P,Lister G S.The role of the East Asi-an active margin in widespread extensional andstrike-slip deformation in East Asia[J].Journal ofGeological Society,2005,162:959-972
[10]Molnar P,Tapponnier P.Cenozoic tectonics of Asia:effects of a continental collision[J].Science,1975,189(4201):101-122
[11]Ye H,Zhang B,Mao F.The Cenozoic tectonic evolu-tion of the Great North China:two types of riftingand crustal necking in the Great North China andtheir tectonic implication[J].Tectonophysics,1987,133:217-277
[12]Yin A.Mode of Cenozoic east-west extension in Ti-bet suggesting a common origin of rifts in Asia dur-ing the Indo-Asian collision[J].Journal of Geophysi-cal Research,2002,105:21745-21760
[13]Liu M,Cui X,Liu F.Cenozoic rifting and volcanismin eastern China:a mantle dynamic link to the Indo-Asian collision[J].Tectonophysics,2004,393:29-42
[14]Yu Z H,Wu S G,Zou D B,et al.Seismic profilesacross the middle Tan-Lu fault zone in Laizhou Bay,Bohai Sea,eastern China[J].Journal of Asian EarthSciences,2008,33:383-394
[15]Qi J F,Yang Q.Cenozoic structural deformation anddynamic processed of the Bohai Bay basin province,China[J].Marine and Petroleum Geology,2010,27:757-771
[16]Zhou X M,Li W X.Origin of Late Mesozoic igneousrocks in Southeastern China:implications for litho-sphere subduction and underplating of mafic magmas[J].Tectonophysics,2000,326:269-287
[17]Ren J Y,Tamaki K,Li S T,et al.Late Mesozoic andCenozoic rifting and its dynamic setting in EasternChina and adjacent areas[J].Tectonophysics,2002,344:175-205
[18]Hilde T W C,Uyeda S,Kroenke L.Evolution of thewestern Pacific and its margins[J].Tectonophysics,1977,38:145-165
[19]Gilder S A,Leloup P H,Courtillot V,et al.Tectonicevolution of the Tancheng-Lujiang(Tan-Lu)faultvia middle Triassic to Early Cenozoic paleomagneticdata[J].Journal of Geophysical Research,1999,104(B7):15365-15390
[20]Hsiao L Y,Graham S A,Tilander N.Seismic reflec-tion imaging of a major strike-slip fault zone in a riftsystem:Paleogene structure and evolution of theTan-Lu fault system,Liaodong Bay,Bohai,offshoreChina[J].American Association of Petroleum Geol-ogists Bulletin,2004,88(1):71-97
[21]Chen J S,Huang B C,Sun L S.New constraints tothe onset of the India-Asia collision:Paleomagneticreconnaissance on the Linzizong Group in the LhasaBlock,China[J].Tectonophysics,2010,489:189-209
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