塔木查格盆地南贝尔凹陷构造特征
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摘要
海拉尔—塔木查格盆地为一中、新生代裂陷盆地,受后期构造作用强烈影响,盆地结构及演化过程十分复杂,基础地质研究进展较慢,严重阻碍了油气勘探进程。本文以南贝尔凹陷的三维地震资料为基础,在系统解释三维地震资料基础上,对工区进行构造解析,查明凹陷结构特征,总结构造演化规律,分析构造形成机制,将南贝尔凹陷构造样式划分为铺展、收缩和走滑3类,进而识别出中生代以来构造演化分为初始裂陷期、强烈断陷期、挤压反转期、张扭沉降期、扭压反转期5个阶段,研究结果对加强南贝尔凹陷乃至整个海拉尔—塔木查格盆地的地质认识、加快南贝尔凹陷的油气勘探进程有重要意义。
Because Hailar-Tamtsag Basin is a Mesozoic-Cenozoic rift basin,and developed on the basis of Tianshan-Xing'an Variscan orogenic system.And Hailar-Tamtsag Basin was strongly influenced by the late tectonism,the architecture of the basin and its evolution is very complicated,the advances in fundamental geological researches are slow,and seriously impede the progress of oil and gas exploration.Based on the 3D seismic data of Nanbeier Sag,a structural analysis for the working block is conducted,the architecture characteristic of the sag is found out,the regularity of the tectonic evolution is summarized,and the tectonic formation mechanism is analyzed on the basis of the system interpretation of 3D seismic data.And the structural styles of Nanbeier depression can be divided into five groups,that is,weakly rifting stage,intensely rifting stage,reversely compressing stage,transtensional depression stage,and transpressional depression stage.It has an important significance for the geologic understanding of Nanbeier sag and even the whole Hailar-Tamtsag Basin,and accelerates the oil and gas exploration process of Nanbeier sag.
Because Hailar-Tamtsag Basin is a Mesozoic-Cenozoic rift basin,and developed on the basis of Tianshan-Xing'an Variscan orogenic system.And Hailar-Tamtsag Basin was strongly influenced by the late tectonism,the architecture of the basin and its evolution is very complicated,the advances in fundamental geological researches are slow,and seriously impede the progress of oil and gas exploration.Based on the 3D seismic data of Nanbeier Sag,a structural analysis for the working block is conducted,the architecture characteristic of the sag is found out,the regularity of the tectonic evolution is summarized,and the tectonic formation mechanism is analyzed on the basis of the system interpretation of 3D seismic data.And the structural styles of Nanbeier depression can be divided into five groups,that is,weakly rifting stage,intensely rifting stage,reversely compressing stage,transtensional depression stage,and transpressional depression stage.It has an important significance for the geologic understanding of Nanbeier sag and even the whole Hailar-Tamtsag Basin,and accelerates the oil and gas exploration process of Nanbeier sag.
引文
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[3]陈发景,汪新文,张光亚,等.中国中新生代含油气盆地构造和动力学背景[J].现代地质,1992,6(3):317-327.Chen Fajing,Wang Xinwen,Zhang Guangya,et al.Geoscience,1992,6(3):317-327.
[4]Jackson A.Active normal faulting and crustal extension[C]//Coward M P,Dewey J F,Hancock P L,ed.Continental Extensional Tectonics.London:Geological Society of London Special Publication,1987.
[5]张功成.中国东北部晚中生代裂陷作用与伸展构造[J].长春科技大学学报,1998,28(3):266-272.Zhang Gongcheng.Jouranl of Changchun University of Science andTechnology,1998,28(3):266-272.
[6]张功成,朱德丰,周章保.松辽盆地伸展与反转构造样式[J].石油勘探与开发,1996,23(2):16-20.Zhang Gongcheng,Zhu Defeng,Zhou Zhangbao.Petroleum Explorationand Development,1996,23(2):16-20.
[7]王胜利,卢华复,李刚,等.南黄海盆地北部凹陷古近纪伸展断层转折褶皱作用[J].石油与天然气地质,2006,27(4):495-503.Wang Shengli,Lu Huafu,Li Gang,et al.Oil&Gas Geology,2006,27(4):495-503.
[8]何明喜,杜建波,古哲,等.下扬子北缘前陆盆地构造变形样式[J].石油实验地质,2006,28(4):322-329.He Mingxi,Du Jianbo,Gu Zhe,et al.Petroleum Geology&Experiment,2006,28(4):322-329.
[9]陈均亮,吴河勇,朱德丰,等.海拉尔盆地构造演化及油气勘探前景[J].地质科学,2007,42(1):147-159.Chen Junliang,Wu Heyong,Zhu Defeng,et al.Chinese Journal ofGeology,2007,42(1):147-159.
[10]漆家福,杨桥.伸展盆地的结构形态及其主控动力学因素[J].石油与天然气地质,2007,28(5):634-640.Qi Jiafu,Yang Qiao.Oil&Gas Geology,2007,28(5):634-640.
[11]高名修.东北晚新生代地裂运动与浅震深震及火山活动[J].东北地震研究,1988,4(3):17-28.Gao MingXiu.Seismological Research of Northeast China,1988,4(3):17-28.
[12]赵忠新,王华,郭齐军.油气输导体系的类型及其输导性能在时空上的演化分析[J].石油实验地质,2002,24(6):527-536.Zhao Zhongxin,Wang Hua,Guo Qijun.Experimental PetroleumGeology,2002,24(6):527-536.
[13]王立社,夏林圻,董云鹏.天山地区下石炭统与下伏地层角度不整合接触的地质意义[J].西北地质,2005,38(1):26-30.Wang Lishe,Xia Linqi,Dong Yunpeng.Northwestern Geology,2005,38(1):26-30.
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