中建南盆地局部构造特征
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摘要
中建南盆地是位于南海西部陆缘的大型新生代沉积盆地。调查资料表明,盆地面积超过11×104km2,沉积厚度达8500m,局部构造发育,油气前景良好。在对盆地大量多道地震资料综合分析解释的基础上,研究了盆地局部构造的圈闭类型、分布特征和发育史。盆地的局部构造主要分为构造圈闭、地层圈闭和复合型圈闭。早期发育伸展构造样式,伴生以张性为主的局部构造圈闭;晚期受走滑应力的改造,发育花状张扭或压扭性构造;特定的构造和沉积环境则造就了地层和复合型圈闭构造。
Zhongjiannan basin is a large Cenozoic sedimentary basin developed in the west continental margin of South China Sea.Exploration data show that the basin has good hydrocarbon potential with vast area,considerable sedimentary thickness and various local traps.An analysis of type,distribution and evolution of local traps in the basin was done based on the integrated analysis and interpretation of a great deal of multi-channel seismic data collected in the basin.Local traps in the basin mainly include structural traps,stratum traps and composite traps.As a strike slip-extensional composite basin,it developed extensional structural styles in the early time,associated with extensional local traps;later,it was reworked by strike-slip stress reformation,and the tenso-shear and compresso-shear structures were formed such as flower structure;special structural and sedimentary environment resulted in the formation of stratum traps and composite traps.
Zhongjiannan basin is a large Cenozoic sedimentary basin developed in the west continental margin of South China Sea.Exploration data show that the basin has good hydrocarbon potential with vast area,considerable sedimentary thickness and various local traps.An analysis of type,distribution and evolution of local traps in the basin was done based on the integrated analysis and interpretation of a great deal of multi-channel seismic data collected in the basin.Local traps in the basin mainly include structural traps,stratum traps and composite traps.As a strike slip-extensional composite basin,it developed extensional structural styles in the early time,associated with extensional local traps;later,it was reworked by strike-slip stress reformation,and the tenso-shear and compresso-shear structures were formed such as flower structure;special structural and sedimentary environment resulted in the formation of stratum traps and composite traps.
引文
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[9]姚伯初,邱燕,李唐根.南海西缘-万安断裂的走滑特征及其构造意义[C]//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,1999:45-53.[YAO Bo-chu,QI U Yan,LI Tang-gen.The strike-slip character of the western margin of South China Sea-Wanan fault and its tectonic significances[C]//Geological and Tectonic Characteristics and Cenozoic Sedi mentation of the Western South China Sea.Beijing:Geo-logical Publishing House,1999:45-53.]
[2]姚伯初,曾维军,Hayes D E,等.中美合作调研南海地质专报[C].武汉:中国地质大学出版社,1994:141-196.[YAO Bo-chu,ZENG Wei-jun,Hayes D E,et al.The geological memoir of South China Sea surveyed jointly by China&USA[R].Wuhan:China University of Geoscience Press,1994:141-196.]
[3]姚伯初.南海新生代的构造演化与沉积盆地[C]//南海地质研究.武汉:中国地质大学出版社,1998:1-15.[YAO Bo-chu.The tectonic evolution and sedi mentary basin of South China Sea in Cenozoic[C]//Geological Research of South China Sea.Wuhan:China University of Geoscience Press,1998:1-15.]
[4]高红芳,陈玲.南海西部中建南盆地构造格架及形成机制分析[J].石油与天然气地质,2006,27(4):512-516.[GAO Hong-fang,CHEN Ling.An analysis of structural framework and formation mechanism of Zhongjiannan basin in the west of South China Sea[J].Oil&Gas Geology,2006,27(4):512-516.]
[5]王燮培,费琪,张家骅.石油勘探构造分析[M].武汉:中国地质大学出版社,1990:174-183.[WANG Xie-pei,FEI Qi,ZHANG Jia-hua.Structure Analysis for Petroleum Explora-tion[M].Wuhan:China University of Geoscience Press,1990:174-183.]
[6]曹成润,刘志宏.含油气盆地构造分析原理及方法[M].长春:吉林大学出版社,2005:130-136.[CAO Cheng-run,LI U Zhi-hong.The Principles and Methods of Structural Analysis in Oil-Gas Bearing Basin[M].Changchun:Jilin University Press,2005:130-136.]
[7]贾振远,郝石生.碳酸盐岩油气形成和分布[M].北京:石油工业出版社,1989.[JI A Zhen-yuan,HAO Shi-sheng.The For-mation and Distribution of Carbonate Oil and Gas[M].Petro-leumIndustry Press,1989.]
[8]万玲,吴能友,姚伯初,等.南沙海域新生代构造运动特征及成因探讨[C]//南海地质研究.北京:地质出版社,2003:8-15.[WAN Ling,WU Neng-you,YAO Bo-chu,et al.Cenozoic tectonic movement and the discussion in Nansha Sea Area[C]//Geological Research of South China Sea.Beijing:Geo-logical Publishing House,2003:8-15.]
[9]姚伯初,邱燕,李唐根.南海西缘-万安断裂的走滑特征及其构造意义[C]//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,1999:45-53.[YAO Bo-chu,QI U Yan,LI Tang-gen.The strike-slip character of the western margin of South China Sea-Wanan fault and its tectonic significances[C]//Geological and Tectonic Characteristics and Cenozoic Sedi mentation of the Western South China Sea.Beijing:Geo-logical Publishing House,1999:45-53.]
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