松辽盆地西边界带深部构造:地电学证据
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摘要
满洲里绥芬河地学断面综合研究了松辽盆地西、东边界的构造特征.在由广角地震波速分布所得到的认识基础上,本文利用松辽盆地西边界带附近新实施的大地电磁测深(MT)(约470 km 42个测点)剖面,经过数据处理的二维电性分布,更为详细地表达了西边界带深部构造特征.与满绥断面研究相近的结果是西边界带的断裂构造表现为作为盆地西边界的嫩江断裂,在地表附近与黑河贺根山缝合带断裂叠加在一起,于深几公里以下两条断裂分开,缝合带断裂西倾并穿过地壳,嫩江断裂东倾而且可能不超壳.本次研究与满绥断面研究不同点是两条断裂分开部位之下的构造表现.由于兴安微板块与松嫩微板块间碰撞、焊合以及边界断裂走滑等复杂区域应力场作用,留存的岩石圈残片被分割在嫩江断裂两侧.所建立的地质一地球物理解释模型提供了西边界带可能的构造地质作用过程.
The Manzhouli-Suifenhe geoscience transect (GGT) did a comprehensive research on the structure characteristics of the west and east boundary of the Songliao basin.Based on the understanding obtained from the wide-angle seismic velocity distribution,this paper use the 2D geoeleStrical distribution along a section (about 470 km,42 survey points) of magnetotelluric sounding newly carried out near the western boundary of Songliao basin to describe the detailed deep structure feature of the west boundary.Compared with the Manzhouli-Suifenhe geoscience transect,the similar result is that the fault structure of the west boundary shows that the Nenjiang fault as the west boundary of the basin stacks together with the Heihe-Hegenshan suture zone near the earth s surface,and the two faults separate down several kilometers,and the fault of the suture zone tends to the west through the crust,but the Nenjiang fault tends to the east and is perhaps within the crust.The difference from the Manzhouli - Suifenhe geoscience transect is in the structures under the part where the two faults separate.Because of the effect of the complex regional stress field,such as the collision and welding between the Xing an microplate and Songnen micro-plate and the boundary strike-slip fault,the retained lithosphere fragments is divided into the both sides of the Nenjiang fault.The established geological-geophysical interpretation model provides the feasible geological construction process of the western boundary.
The Manzhouli-Suifenhe geoscience transect (GGT) did a comprehensive research on the structure characteristics of the west and east boundary of the Songliao basin.Based on the understanding obtained from the wide-angle seismic velocity distribution,this paper use the 2D geoeleStrical distribution along a section (about 470 km,42 survey points) of magnetotelluric sounding newly carried out near the western boundary of Songliao basin to describe the detailed deep structure feature of the west boundary.Compared with the Manzhouli-Suifenhe geoscience transect,the similar result is that the fault structure of the west boundary shows that the Nenjiang fault as the west boundary of the basin stacks together with the Heihe-Hegenshan suture zone near the earth s surface,and the two faults separate down several kilometers,and the fault of the suture zone tends to the west through the crust,but the Nenjiang fault tends to the east and is perhaps within the crust.The difference from the Manzhouli - Suifenhe geoscience transect is in the structures under the part where the two faults separate.Because of the effect of the complex regional stress field,such as the collision and welding between the Xing an microplate and Songnen micro-plate and the boundary strike-slip fault,the retained lithosphere fragments is divided into the both sides of the Nenjiang fault.The established geological-geophysical interpretation model provides the feasible geological construction process of the western boundary.
引文
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[16] 杨宝俊,唐建人,李勤学等.松辽盆地深部反射地震探查.地球物理学进展,2001,16(4) :11～1 7Yang B J,Tang J R,Li Q X,et al.Deep seismic reflection probing in Songliao basin.Progress in Geophysics (in Chinese),2001,16(4) :11～17
[17] 杨宝俊,唐建人,李勤学等.松辽盆地隆起区地壳反射结构与“断开”莫霍界面.中国科学(D辑),2003,33(2) :170～176Yang B J,Tang J R,Li Q X,et al.Crustal reflection structure in the uplifting zone of Songliao Basin and disconnecting Moho interface.Science in China (Series D) (in Chinese),2003,33(2) :170～176
[18] 杨宝俊,刘万崧,王喜臣等.中国东部大兴安岭重力梯级带域地球物理场特征及其成因.地球物理学报,2005,48(1) :86～97Yang B J,Liu W S,Wang X C,et al.Geophysical characteristics of Daxinganling gravitational gradient zone in the East China and its geodynamic mechanism.Chinese J.Geophys.(in Chinese),2005,48(1) :86～97
[19] 江为为,涂广红,朱东英等.大庆外围盆地地球物理场与盆地基底特征.地球物理学进展,2006,21(4) :1064～1079 Jiang W W,Tu G H,Zhu D Y,et al.Characters of geophysical fields and floor of Daqing outer basins.Progress in Geophysics (in Chinese),2006,21(4) :1064～1079
[20] 刘殿秘,韩立国,翁爱华等.松辽盆地西北边界部分地球物理特征.地球物理学进展,2007,22(6) :1722～1727 Liu D M,Han L G,Weng A H,et al.Partial geophysical features of the northwest boundary in Songliao basin.Progress in Geophysics (in Chinese),2007,22(6) :1722～1727
[21] 吴福元,江博明,林强.中国北方造山带造山后花岗岩的同位素特点与地壳生长意义.科学通报,1997,42(20) :2188～2192 Wu F Y,Jiang B M,Lin Q.Isotopic characteristic of post-orogenic granites and its crustal development significance in Northern orogenic belt of China.Chinese Science Bulletin (in Chinese),1997,42(20) :2188～2192
[22] 徐备,陈斌.内蒙古北部华北板块与西伯利亚板块之间中古生代造山带的结构及演化.中国科学(D),1997,27(3) :227～232 Xu B,Chen B.Framework and evolution of the middle Paleozoic orogenic belt between Siberian and North China Plates in northern Inner Mongolia.Science in China (Series D:Earth Sciences) (in Chinese),1997,27(3) :227～232
[23] Werniche B P.Low-angle normal faults in the Basin and Range province:nappe tectonics in an extending orogen.Nature,1981,291:645～648
[24] Constable S C,Parker R L,Constable C G,et al.Occam's inversion:a practical algorithm for generating smooth models from electromagnetic sounding data.Geophysics,1987,52(3) :289～300
[25] De Groot-Hedin C,Constable S.Occam s inversion to generate smooth two-dimensional models from magnetotelluric data.Geophysics,1990,55(12) :1613～1634
[26] Vedanti N,Srivastava R P,Sagode J,et al.An efficient ID Occam s inversion algorithm using analytically computed first-and second-derivatives for DC resistivity soundings.Computers & Geosciences,2005,31:319～328
[27] Vallee M,Smith R S.Application of Occam s inversion to airborne time-domain electromagnetic.The Leading Edge,2009,28(3) :284～287
[28] 吴小平,徐果明.大地电磁数据的0ccam反演改进.地球物理学报,1998,41(4) :547～555 Wu X P,Xu G M.Improvement of Occam s inversion for MT data.Chinese J.Geophys.(in Chinese),1998,41(4) :547～555
[29] 王若,王妙月.可控源音频大地电磁数据的反演方法.地球物理学进展,2003,18(2) :197～202 Wang R,Wang M Y.Inversion method of controlled source audio-frequency magnetotelluric data.Progress in Geophysics (in Chinese),2003,18(2) :197～202
[30] 杨宝俊,刘财,刘万崧等.中国东北地区岩石圈结构的地震学特征与对矿产资源的动力控制作用.中国地质,2006,33(4) :866～873 Yang B J,Liu C,Liu W S,et al.Seismological features of the lithospheric structure in Northeast China and dynamic controls on mineral resources.Geology in China (in Chinese),2006,33(4) :866～873
[2] 杨宝俊,穆石敏,金旭等.中国满洲里绥芬河地学断面地球物理综合研究.地球物理学报,1996,39(6) :772～782 Yang B J,Mu S M,Jin X,et al.Synthesized study on the geophysics of Manzhouli-Suifenhe Geoscience Transect,China.Chinese J.Geophys.(in Chinese),1996,39(6) :772～782
[3] 金旭,杨宝俊.中国满洲里绥芬河地学断面地球物理场及深部构造特征研究.北京:地震出版社,1994 Jin X,Yang B J.Study on Geophysical Field and Tectonic Characteristics in Depth of the Manzhouli-Suifenhe Geoscience Transect of China (in Chinese).Beijing:Seismological Press,1994
[4] 刘洋.中国东北地区地壳物性分布特征及其与大地构造关系.长春:吉林大学,2006 Liu Y.Distributional characteristics and relationship with geotectonics about crust physical property in northeast of China.Changchun:Jilin University,2006
[5] 杨宝俊,刘财,梁铁成.满洲里-绥芬河地学断面域内莫霍的基本特征(详细摘要).长春科技大学学报,1998,28(1) :111～113 Yang B J,Liu C,Liang T C.The fundamental characteristics of Moho in Manzhouli-Suifenhe geoscience transect (abstracts in detail).Journal of Changchun University of Science and Technology (in Chinese),1998,28(1) :111～113
[6] 傅维洲,杨宝俊,刘 财等.中国满洲里绥芬河地学断面地震学研究.长春科技大学学报,1998,28(2) :206～212 Fu W Z,Yang B J.Liu C,et al.Study on the seismology in Manzhouli-Suifenhe geosciences transect of China.Journal of Changchun University of Science and Technology (in Chinese),1998,28(2) :206～212
[7] 杨宝俊.在地学断面域内用地震学方法研究大陆地壳--以中国满洲里绥芬河地学断面为例.北京:地质出版社,1999 Yang B J.Studying of Continental Crust using Seismological Method in the Zone of Geoscience Transect:ManzhouliSuifenhe Geosciences Transect of China (in Chinese).Beijing:Geological Publishing House,1999
[8] 杨宝俊,张梅生,王璞珺.中国油气田地质地球物理解析(上卷).北京:科学出版社,2003 Yang B J,Zhang M S,Wang P J.Geological-Geophysics Analytic Interpretation on Oil and Gas Potential Region of China (Volume I) (in Chinese with English Abstract).Beijing:Science Press,2003
[9] Meissner R,Wever Th,Sadowiak P.Continental collisions and seismic signature.Geophys.J,Int.,1991,105:15～23
[10] 朱勤文,路凤香,谢意红等.大陆边缘扩张型活动带火山岩组合--松辽盆地周边中生代火山岩研究.岩石学报,1997,13(4) :551～561 Zhu Q W,Lu F X,Xie Y H,et al.Volcanic rocks assemblages in active belt of spreading type in continental margin:study on Mesozoic volcanic rocks around Songliao Basin.Acta Petrologica Sinica (in Chinese),1997,13(4) :551～561
[11] 张立敏,唐晓明.西太平洋板块俯冲运动与中国东北深震带.地球物理学报,1983,26(4) :331～340 Zhang L M,Tang X M.Deep earthquake zone in northeast China and underriding movement of west Pacific plate.Chinese J.Geophys.(Acta Geophysica Sinica) (in Chinese),1983,26(4) :331～340
[12] 宁杰远,臧绍先.日本海及中国东北地震的深度分布及其应力状态.地震地质,1987,9(2) :49～61 Ning J Y,Zang S X.Depth distribution and stress state of earthquake in Japanese sea and NE China.Seismology and Geology (in Chinese),1987,9(2) :49～61
[13] 魏斯禹,滕吉文,王谦身等.中国东部大陆边缘地带的岩石圈结构与动力学.北京:科学出版社,1990Wei S Y,Teng J W,Wang Q S,et al.Dynamics and Lithospheric Tectonic of Continental Margin Zone in East China (in Chinese).Beijing:Science Press,1990
[14] Yang B J,Liu C,Han L G,et al.A study of detachment faults of the upper crust in Manzhouli-Suifenhe GGT by the method of vertical seismic reflection.In:Liu G D ed.Proceedings of the 30th International Geological Congress,Geophysics,20 ? Utrecht,the Netherlands,VSP,1997． 51～61
[15] 傅维洲,贺日政.松辽盆地及周边地带地震构造特征.世界地质,1999,18(2) :95～100Fu W Z,He R Z.Structural characteristics of earthquakes in Songliao Basin and its peripheral regions.World Geology (in Chinese),1999,18(2) :95～100
[16] 杨宝俊,唐建人,李勤学等.松辽盆地深部反射地震探查.地球物理学进展,2001,16(4) :11～1 7Yang B J,Tang J R,Li Q X,et al.Deep seismic reflection probing in Songliao basin.Progress in Geophysics (in Chinese),2001,16(4) :11～17
[17] 杨宝俊,唐建人,李勤学等.松辽盆地隆起区地壳反射结构与“断开”莫霍界面.中国科学(D辑),2003,33(2) :170～176Yang B J,Tang J R,Li Q X,et al.Crustal reflection structure in the uplifting zone of Songliao Basin and disconnecting Moho interface.Science in China (Series D) (in Chinese),2003,33(2) :170～176
[18] 杨宝俊,刘万崧,王喜臣等.中国东部大兴安岭重力梯级带域地球物理场特征及其成因.地球物理学报,2005,48(1) :86～97Yang B J,Liu W S,Wang X C,et al.Geophysical characteristics of Daxinganling gravitational gradient zone in the East China and its geodynamic mechanism.Chinese J.Geophys.(in Chinese),2005,48(1) :86～97
[19] 江为为,涂广红,朱东英等.大庆外围盆地地球物理场与盆地基底特征.地球物理学进展,2006,21(4) :1064～1079 Jiang W W,Tu G H,Zhu D Y,et al.Characters of geophysical fields and floor of Daqing outer basins.Progress in Geophysics (in Chinese),2006,21(4) :1064～1079
[20] 刘殿秘,韩立国,翁爱华等.松辽盆地西北边界部分地球物理特征.地球物理学进展,2007,22(6) :1722～1727 Liu D M,Han L G,Weng A H,et al.Partial geophysical features of the northwest boundary in Songliao basin.Progress in Geophysics (in Chinese),2007,22(6) :1722～1727
[21] 吴福元,江博明,林强.中国北方造山带造山后花岗岩的同位素特点与地壳生长意义.科学通报,1997,42(20) :2188～2192 Wu F Y,Jiang B M,Lin Q.Isotopic characteristic of post-orogenic granites and its crustal development significance in Northern orogenic belt of China.Chinese Science Bulletin (in Chinese),1997,42(20) :2188～2192
[22] 徐备,陈斌.内蒙古北部华北板块与西伯利亚板块之间中古生代造山带的结构及演化.中国科学(D),1997,27(3) :227～232 Xu B,Chen B.Framework and evolution of the middle Paleozoic orogenic belt between Siberian and North China Plates in northern Inner Mongolia.Science in China (Series D:Earth Sciences) (in Chinese),1997,27(3) :227～232
[23] Werniche B P.Low-angle normal faults in the Basin and Range province:nappe tectonics in an extending orogen.Nature,1981,291:645～648
[24] Constable S C,Parker R L,Constable C G,et al.Occam's inversion:a practical algorithm for generating smooth models from electromagnetic sounding data.Geophysics,1987,52(3) :289～300
[25] De Groot-Hedin C,Constable S.Occam s inversion to generate smooth two-dimensional models from magnetotelluric data.Geophysics,1990,55(12) :1613～1634
[26] Vedanti N,Srivastava R P,Sagode J,et al.An efficient ID Occam s inversion algorithm using analytically computed first-and second-derivatives for DC resistivity soundings.Computers & Geosciences,2005,31:319～328
[27] Vallee M,Smith R S.Application of Occam s inversion to airborne time-domain electromagnetic.The Leading Edge,2009,28(3) :284～287
[28] 吴小平,徐果明.大地电磁数据的0ccam反演改进.地球物理学报,1998,41(4) :547～555 Wu X P,Xu G M.Improvement of Occam s inversion for MT data.Chinese J.Geophys.(in Chinese),1998,41(4) :547～555
[29] 王若,王妙月.可控源音频大地电磁数据的反演方法.地球物理学进展,2003,18(2) :197～202 Wang R,Wang M Y.Inversion method of controlled source audio-frequency magnetotelluric data.Progress in Geophysics (in Chinese),2003,18(2) :197～202
[30] 杨宝俊,刘财,刘万崧等.中国东北地区岩石圈结构的地震学特征与对矿产资源的动力控制作用.中国地质,2006,33(4) :866～873 Yang B J,Liu C,Liu W S,et al.Seismological features of the lithospheric structure in Northeast China and dynamic controls on mineral resources.Geology in China (in Chinese),2006,33(4) :866～873
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