南海东北部陆缘区新近纪早期反转构造特征及其动力学意义
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摘要
通过深入分析"九七三"项目所获取的高分辨率多道地震剖面,结合区域钻井资料,探讨了新生代以来南海东北部陆缘所历经的新生代早期张裂、中新世晚期阶段性挤压及上新世以来的稳定热沉降等复杂构造运动;张裂背景下的南海东北部陆缘在中新统中部、下部出现的背斜、逆断层等典型压性反转构造,凸现了南海东北部陆缘在晚中新世发生的阶段性挤压构造运动;分析表明,此构造活动是东沙运动在台西南海域的表现,其动力来源同菲律宾海板块的北西向运动有关。
Combing with regional well-log data,the complicated tectonic movements were explored at continental margin of the northeast South China Sea(SCS) such as rifting at Early Cenozoic,phasic extrusion at Late Miocene and stable thermal sedimentation after Pliocene by analyzing high resolution multi-channel seismic profiles acquired in the national "973" project.Therein,the typical extruding inversion structures such as anticlines and reversed faults existing at Mid-Lower Miocene strata especially in back of totally rifting evolutionary conditions manifested the phasic extruding tectonic movement occurred at about Late Miocene in the northeast SCS.Analyzed results show that the inversion structure is the external performance of Dongsha movement.And its dynamic origin is related to the northwest movement of Philippine Sea Plate.
Combing with regional well-log data,the complicated tectonic movements were explored at continental margin of the northeast South China Sea(SCS) such as rifting at Early Cenozoic,phasic extrusion at Late Miocene and stable thermal sedimentation after Pliocene by analyzing high resolution multi-channel seismic profiles acquired in the national "973" project.Therein,the typical extruding inversion structures such as anticlines and reversed faults existing at Mid-Lower Miocene strata especially in back of totally rifting evolutionary conditions manifested the phasic extruding tectonic movement occurred at about Late Miocene in the northeast SCS.Analyzed results show that the inversion structure is the external performance of Dongsha movement.And its dynamic origin is related to the northwest movement of Philippine Sea Plate.
引文
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[21]李春峰.西太平洋边缘海与古特提斯边缘海的对比研究[M]//李家彪,高抒.中国边缘海海盆演化与资源效应,v.3.北京:海洋出版社,2004:46—53.
[22]方晓思,张志军,卢立伍,等.印度板块-古亚洲板块碰撞及亚洲恐龙的出现[J].地质通报,2006,25(7):862—873.
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[24]HALL R,ALI J R,ANDERSON C D,et al.Origin and motion history of the Philippine Sea plate[J].Tectonophysics,1995,251:1229—1250.
[25]BACHMAN S B,LEWIS S D,SCHWELLER W J.Evolution of a forearc basin,Luzon Central Valley,Philippines[J].Amer AssocPetrol Geol,1983,67:1143—1162.
[26]LIU Char-Shine,HUANG Ian L,TENG Louis S.Structures of south-western Taiwan[J].Marine Geology,1997,137:305—319.
[27]丁巍伟,杨树锋,陈汉林,等.台湾岛以南海域新近纪的弧-陆碰撞造山作用[J].地质科学,2006,41(2):195—201.
[28]TANG J C,CHEMENDA A I.Numerical modeling of arc continent collision:application to Taiwan[J].Tectonophysics,2000,325:23—42.
[29]BRIAS A,PAUTOT G.Reconstructions of the South China Sea from structural data and magnetic anomalies[C]//Jin Xiang-long,KUDRASS H R,PAUTOT G,eds.Marine Geology and Geophysics of the South China Sea.Proc Symp on Recent Contributions to theGeological History of the South China Sea.Beijing:China Ocean Press,2000:60—70.
[30]LUDMANN Thomas,WONG How Kin.Neotectonic regime on the passive continental margin of the South China Sea[J].Tectono-physics,1999,311:113—138.
[2]李家彪,金翔龙,高金耀.南海东部海盆晚期扩张的构造地貌研究[J].中国科学,2002,32(3):239—248.
[3]LUDMANN T,WONG How-Kin,WANG Pin-xian.Plio-Quaternary sedimentation processes and neotectonics of the northern continen-tal margin of the South China Sea[J].Marine Geology,2001,172:331—358.
[4]李平鲁.珠江口盆地新生代构造运动[J].中国海上油气(地质),1993,7(6):11—17.
[5]吴时国,刘文灿.东亚大陆边缘的俯冲带构造[J].地学前缘,2004,11(3):15—22.
[6]吴时国,刘展,王万银,等.东沙群岛海区晚新生代构造特征及其对弧陆碰撞的响应[J].海洋与湖沼,2004,35(6):481—490.
[7]SUN Dong-gi.On the Permian biographic boundary between Gandwana and Eurasia in Tibet,China as the eastern section of the Tethys[J].Paleogeography,Paleoclimatology and Paleoecology,1993,100:59—77.
[8]任战利.中国北方沉积盆地热演化史的对比[J].石油与天然气地质,2000,21(1):33—37.
[9]杨森楠.中、新生代太平洋陆缘带的构造格局和构造转换[J].地学前缘,1997,4(3—4):247—255.
[10]姚伯初.南海断裂特征及其构造意义[M]//南海西部海域地质构造特征和新生代沉积.北京:地质出版社,1999:32—43.
[11]李家彪,金翔龙,阮爱国,等,马尼拉增生楔中段的挤入构造[J].科学通报,2004,49(10):1000—1008.
[12]姚伯初,刘振湖.南沙海域沉积盆地与油气资源分布[J].中国海上油气,2006,18(3):150—160.
[13]HUANG Chi-yue,WU Wei-yu,CHANG Chung-pai,et al.Tectonic evolution of accretionary prism in the arc-continent collision terraneof Taiwan[J].Tectonophysics,1997,281:31—51.
[14]TOKUYAMA H,ASHI J,SOH W,et a1.Active Submarine Faults off Tokai[M].Tokyo:University of Tokyo Press,1998:151.
[15]王善书.沿海大陆架及毗邻海域油气区(上册,中国石油地质志,卷十六)[M].北京:石油工业出版社,1992:438—453.
[16]金庆焕.南海地质与油气资源[M].北京:地质出版社,1989:257—262.
[17]GRADSTEIN F M,OGG J G,SMITH A G,et al.A new geologic time scale,with special reference to Precambrian and Neogene[J].Episodes,2004,27(2):83—100.
[18]宋海斌,吴能友,吴时国,等.南海东北部973剖面地震资料处理及其BSR特征[M]//李家彪,高抒.中国边缘海海盆演化与资源效应,v.3.北京:海洋出版社,2004:182—185.
[19]尚继宏,李家彪.南海东北部陆坡与恒春海脊天然气水合物分布的地震反射特征对比[J].海洋学研究,2006,24(4):12—20.
[20]张原庆,钱祥麟,李江海.板块碰撞远程效应的传播与地球层圈间的运动[J].地学前缘,2001,8(4):341—343.
[21]李春峰.西太平洋边缘海与古特提斯边缘海的对比研究[M]//李家彪,高抒.中国边缘海海盆演化与资源效应,v.3.北京:海洋出版社,2004:46—53.
[22]方晓思,张志军,卢立伍,等.印度板块-古亚洲板块碰撞及亚洲恐龙的出现[J].地质通报,2006,25(7):862—873.
[23]臧绍先,宁杰远.菲律宾海板块与欧亚板块的相互作用及其对东亚构造运动的影响[J].地球物理学报,2002,45(2):188—197.
[24]HALL R,ALI J R,ANDERSON C D,et al.Origin and motion history of the Philippine Sea plate[J].Tectonophysics,1995,251:1229—1250.
[25]BACHMAN S B,LEWIS S D,SCHWELLER W J.Evolution of a forearc basin,Luzon Central Valley,Philippines[J].Amer AssocPetrol Geol,1983,67:1143—1162.
[26]LIU Char-Shine,HUANG Ian L,TENG Louis S.Structures of south-western Taiwan[J].Marine Geology,1997,137:305—319.
[27]丁巍伟,杨树锋,陈汉林,等.台湾岛以南海域新近纪的弧-陆碰撞造山作用[J].地质科学,2006,41(2):195—201.
[28]TANG J C,CHEMENDA A I.Numerical modeling of arc continent collision:application to Taiwan[J].Tectonophysics,2000,325:23—42.
[29]BRIAS A,PAUTOT G.Reconstructions of the South China Sea from structural data and magnetic anomalies[C]//Jin Xiang-long,KUDRASS H R,PAUTOT G,eds.Marine Geology and Geophysics of the South China Sea.Proc Symp on Recent Contributions to theGeological History of the South China Sea.Beijing:China Ocean Press,2000:60—70.
[30]LUDMANN Thomas,WONG How Kin.Neotectonic regime on the passive continental margin of the South China Sea[J].Tectono-physics,1999,311:113—138.
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