南宁新生代软流圈上涌柱及其对浅表构造的影响
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摘要
在研究南宁新生代软流圈上涌柱构造的基础上,从过渡构造、区域断裂、新生代盆地等方面并结合三维数值模拟来进一步分析和研究南宁新生代软流圈上涌柱构造对浅表构造的影响。南宁新生代软流圈上涌柱的存在对研究区浅表构造的影响是深层次、多方面的,在柱体边缘形成一系列过渡构造,影响到柱体中心附近NE向和NW向区域断裂的分段活动性。同时,在软流圈上涌和向东南方向流动过程中,带动研究区地壳上部块体移动,在南宁新生代软流圈上涌柱的柱体中心、西部和北部产生引张,相应在浅表形成断陷盆地,同时加强了东南部NE向和NW向区域性断裂的活动性,形成了灵山"中强地震活动区"。三维数值模拟的结果进一步验证了这个结论。
Based on the integrated research of intermediate structure,regional faults,Cenozoic basins and three-dimensional numerical simulation,we further analyze the impact of the Nanning Cenozoic asthenosphere upwelling plume tectonics on the shallow surface structure of the study area.A series of transitional structures,generated at the margin of the asthenosphere upwelling plume,affect the activities of NE-trending and NW-trending regional faults near the central of plume.Simultaneously,during the asthenosphere upwelling and flowing to southeast,the plume caused the movement of the upper crust mass,which led to the following events:the extension of the center,the west and the north of the plume;the formation of fault basins on the shallow surface;the enhancement of the activity of NE-trending and NW-trending regional faults in the southeast;the generation of the Lingshan mid-strong seismic active region.The conclusion has further been tested by the three-dimensional numerical simulation.
Based on the integrated research of intermediate structure,regional faults,Cenozoic basins and three-dimensional numerical simulation,we further analyze the impact of the Nanning Cenozoic asthenosphere upwelling plume tectonics on the shallow surface structure of the study area.A series of transitional structures,generated at the margin of the asthenosphere upwelling plume,affect the activities of NE-trending and NW-trending regional faults near the central of plume.Simultaneously,during the asthenosphere upwelling and flowing to southeast,the plume caused the movement of the upper crust mass,which led to the following events:the extension of the center,the west and the north of the plume;the formation of fault basins on the shallow surface;the enhancement of the activity of NE-trending and NW-trending regional faults in the southeast;the generation of the Lingshan mid-strong seismic active region.The conclusion has further been tested by the three-dimensional numerical simulation.
引文
[1]广西工程防震研究院.国电南宁发电厂工程场地地震安全性评价工作报告.南宁:广西壮族自治区地震局,2005.
[2]广西工程防震研究院.国电南宁发电厂工程场地地震安全性评价工作报告.南宁:广西壮族自治区地震局,2005.
[1]广西工程防震研究院.天等东平220kV变电所工程场地地震安全性评价工作报告.南宁:广西壮族自治区地震局,2006.
[2]广西工程防震研究院.国电南宁发电厂工程场地地震安全性评价工作报告.南宁:广西壮族自治区地震局,2005.
[1]Wang D H.Current topics about hotspot[J].Geological Sci-ence and Technology Information,1995,14(1):9-16(in Chi-nese).
[2]Gu ML,Liu BJ,Zhao C B,et al.Study onthe coupled rela-tionship between deep and shallowstructures of Xingtai Area and some significant questions[J].Acta Seismologica Sinica,2000,22(4):385-394(in Chinese).
[3]Zhang X,Zhang X K,Liu M,et al.Deep structural charac-teristics and seismogenesis of theM=8.0earthquakes in North China[J].Acta Seismologica Sinica,2003,25(2):136-142(in Chinese).
[4]Bian Q K,Wang Y Y.The stress states and motion charac-teristics of the deep and shallowstructures in crust[J].Plat-eau Earthquake Research,2006,18(2):25-32(in Chinese).
[5]Xing J S,Yang WR,Xing Z Y,et al.Deep-seated structure characteristics of Eastern China and its relation with metal mineralization-concentrated region[J].Earth Science Fron-tiers,2007,14(3):114-130(in Chinese).
[6]Yang W R,Zeng Z X,Li D W,et al.Three-level tectonic model for intraplate earthquakes[J].Earth Science Frontiers,2009,16(1):206-217(in Chinese).
[7]Wang Q L.Stress field of mantle convection current and con-tinental marginal spread in South China sea and its vicinity[J].Tropic Oceanology,1987,6(4):19-27(in Chinese).
[8]Li S G.Introduction to Geomechanics[M].Beijing:Science Press,1979:1-53.
[9]Song F M,Li C Y,Chen X C,et al.Geologic-geomorphic evidence and rate of Late Pleistocene displacement of the Youjiang fault zone[J].Seismology and Geology,2004,26(4):611-621(in Chinese).
[10]Zhou B G,Yang X P,Du L,et al.Discussion on the seg-mentation of Fangcheng-Lingshan Fault,Guangxi Province and determination of related potential[J].Technology for Earthquake Disaster Prevention,2008,3(1):8-19(in Chi-nese).
[11]Li W Q.Intensity distribution of LingshanM=643earth-quake in meizoseismic area and its seismogenic structure[J].South China Journal of Seismology,1992,12(3):46-51(in Chinese).
[12]You X Z.The characteristics of earthquake activity and seis-mic geology in Guangxi[J].Geology of Guangxi,1988,1(1):63-72(in Chinese).
[13]Liao Z Y,Jiang X G,Li R,et al.Research on the tectono-thermal evolution of the Baise basin,Guangxi Province[J].Experimental Petroleum Geology,2005,27(1):18-24(in Chinese).
[14]Ban B,Deng D G.The charateristics and development of the Xinxu-Weicun fault in the Nanning Basin[J].Geology of Guangxi,1989,2(2):71-76(in Chinese).
[15]Pan S A.The characteristics and significance of neotectonics in Nanning City[J].Geology of Guangxi,2000,13(1):11-15(in Chinese).
[16]Zhao H L,Di YJ,Liu Z W,et al.Cenozoic volcanismand mantle plume along southeast coast of China[J].Acta Geo-logica Sinica,2004,78(6):781-788(in Chinese).
[17]Li X G,Shi S P,Huang Y,et al.Current tectonic stress field in Guangxi and vicinity[J].Journal of Seismological Re-search,2007,30(3):235-240(in Chinese).
[1]王登红.热点研究述评[J].地质科技情报,1995,14(1):9-16.
[2]顾梦林,刘宝金,赵成斌,等.邢台地区深浅构造耦合关系的探测研究和几个值得思考的问题[J].地震学报,2000,22(4):385-394.
[3]张先,张先康,刘敏,等.华北地区8级大震的深部构造特征及地震成因的探讨[J].地震学报,2003,25(2):136-142.
[4]边庆凯,王云云.深浅构造的应力状态与运动特征[J].高原地震,2006,18(2):25-32.
[5]邢集善,杨巍然,邢作云,等.中国东部深部构造特征及其与矿集区关系[J].地学前缘,2007,14(3):114-130.
[6]杨巍然,曾佐勋,李德威,等.板内地震过程的三层次构造模式[J].地学前缘,2009,16(1):206-217.
[7]王启玲.南海及其围区壳下地幔应力场和陆缘扩张[J].热带地理,1987,6(4):19-27.
[8]李四光.地质力学概论[M].北京:科学出版社,1979:1-53.
[9]宋方敏,李传友,陈献程,等.右江断裂带晚更新世活动的若干地质地貌证据及位移速率[J].地震地质,2004,26(4):611-621.
[10]周本刚,杨晓平,杜龙,等.广西防城—灵山断裂带活动性分段与潜在震源区划分研究[J].震灾防御技术,2008,3(1):8-19.
[11]李伟琦.1936年灵山634级地震极震区烈度分布与发震构造[J].华南地震,1992,12(3):46-51.
[12]游象照.广西地震活动与地震地质特征[J].广西地质,1988,1(1):63-72.
[13]廖宗延,江兴歌,李冉,等.广西百色盆地构造-热演化初步研究[J].石油实验地质,2005,27(1):18-24.
[14]班波,邓德贵.南宁盆地心圩—韦村断裂的特征及发展[J].广西地质,1989,2(2):71-76.
[15]潘顺安.南宁市新构造运动特征及其意义[J].广西地质,2000,13(1):11-15.
[16]赵海玲,狄永军,刘振文,等.东南沿海地区新生代火山作用和地幔柱[J].地质学报,2004,78(6):781-788.
[17]李细光,史水平,黄洋,等.广西及其邻区现今构造应力场研究[J].地震研究,2007,30(3):235-240.
[2]广西工程防震研究院.国电南宁发电厂工程场地地震安全性评价工作报告.南宁:广西壮族自治区地震局,2005.
[1]广西工程防震研究院.天等东平220kV变电所工程场地地震安全性评价工作报告.南宁:广西壮族自治区地震局,2006.
[2]广西工程防震研究院.国电南宁发电厂工程场地地震安全性评价工作报告.南宁:广西壮族自治区地震局,2005.
[1]Wang D H.Current topics about hotspot[J].Geological Sci-ence and Technology Information,1995,14(1):9-16(in Chi-nese).
[2]Gu ML,Liu BJ,Zhao C B,et al.Study onthe coupled rela-tionship between deep and shallowstructures of Xingtai Area and some significant questions[J].Acta Seismologica Sinica,2000,22(4):385-394(in Chinese).
[3]Zhang X,Zhang X K,Liu M,et al.Deep structural charac-teristics and seismogenesis of theM=8.0earthquakes in North China[J].Acta Seismologica Sinica,2003,25(2):136-142(in Chinese).
[4]Bian Q K,Wang Y Y.The stress states and motion charac-teristics of the deep and shallowstructures in crust[J].Plat-eau Earthquake Research,2006,18(2):25-32(in Chinese).
[5]Xing J S,Yang WR,Xing Z Y,et al.Deep-seated structure characteristics of Eastern China and its relation with metal mineralization-concentrated region[J].Earth Science Fron-tiers,2007,14(3):114-130(in Chinese).
[6]Yang W R,Zeng Z X,Li D W,et al.Three-level tectonic model for intraplate earthquakes[J].Earth Science Frontiers,2009,16(1):206-217(in Chinese).
[7]Wang Q L.Stress field of mantle convection current and con-tinental marginal spread in South China sea and its vicinity[J].Tropic Oceanology,1987,6(4):19-27(in Chinese).
[8]Li S G.Introduction to Geomechanics[M].Beijing:Science Press,1979:1-53.
[9]Song F M,Li C Y,Chen X C,et al.Geologic-geomorphic evidence and rate of Late Pleistocene displacement of the Youjiang fault zone[J].Seismology and Geology,2004,26(4):611-621(in Chinese).
[10]Zhou B G,Yang X P,Du L,et al.Discussion on the seg-mentation of Fangcheng-Lingshan Fault,Guangxi Province and determination of related potential[J].Technology for Earthquake Disaster Prevention,2008,3(1):8-19(in Chi-nese).
[11]Li W Q.Intensity distribution of LingshanM=643earth-quake in meizoseismic area and its seismogenic structure[J].South China Journal of Seismology,1992,12(3):46-51(in Chinese).
[12]You X Z.The characteristics of earthquake activity and seis-mic geology in Guangxi[J].Geology of Guangxi,1988,1(1):63-72(in Chinese).
[13]Liao Z Y,Jiang X G,Li R,et al.Research on the tectono-thermal evolution of the Baise basin,Guangxi Province[J].Experimental Petroleum Geology,2005,27(1):18-24(in Chinese).
[14]Ban B,Deng D G.The charateristics and development of the Xinxu-Weicun fault in the Nanning Basin[J].Geology of Guangxi,1989,2(2):71-76(in Chinese).
[15]Pan S A.The characteristics and significance of neotectonics in Nanning City[J].Geology of Guangxi,2000,13(1):11-15(in Chinese).
[16]Zhao H L,Di YJ,Liu Z W,et al.Cenozoic volcanismand mantle plume along southeast coast of China[J].Acta Geo-logica Sinica,2004,78(6):781-788(in Chinese).
[17]Li X G,Shi S P,Huang Y,et al.Current tectonic stress field in Guangxi and vicinity[J].Journal of Seismological Re-search,2007,30(3):235-240(in Chinese).
[1]王登红.热点研究述评[J].地质科技情报,1995,14(1):9-16.
[2]顾梦林,刘宝金,赵成斌,等.邢台地区深浅构造耦合关系的探测研究和几个值得思考的问题[J].地震学报,2000,22(4):385-394.
[3]张先,张先康,刘敏,等.华北地区8级大震的深部构造特征及地震成因的探讨[J].地震学报,2003,25(2):136-142.
[4]边庆凯,王云云.深浅构造的应力状态与运动特征[J].高原地震,2006,18(2):25-32.
[5]邢集善,杨巍然,邢作云,等.中国东部深部构造特征及其与矿集区关系[J].地学前缘,2007,14(3):114-130.
[6]杨巍然,曾佐勋,李德威,等.板内地震过程的三层次构造模式[J].地学前缘,2009,16(1):206-217.
[7]王启玲.南海及其围区壳下地幔应力场和陆缘扩张[J].热带地理,1987,6(4):19-27.
[8]李四光.地质力学概论[M].北京:科学出版社,1979:1-53.
[9]宋方敏,李传友,陈献程,等.右江断裂带晚更新世活动的若干地质地貌证据及位移速率[J].地震地质,2004,26(4):611-621.
[10]周本刚,杨晓平,杜龙,等.广西防城—灵山断裂带活动性分段与潜在震源区划分研究[J].震灾防御技术,2008,3(1):8-19.
[11]李伟琦.1936年灵山634级地震极震区烈度分布与发震构造[J].华南地震,1992,12(3):46-51.
[12]游象照.广西地震活动与地震地质特征[J].广西地质,1988,1(1):63-72.
[13]廖宗延,江兴歌,李冉,等.广西百色盆地构造-热演化初步研究[J].石油实验地质,2005,27(1):18-24.
[14]班波,邓德贵.南宁盆地心圩—韦村断裂的特征及发展[J].广西地质,1989,2(2):71-76.
[15]潘顺安.南宁市新构造运动特征及其意义[J].广西地质,2000,13(1):11-15.
[16]赵海玲,狄永军,刘振文,等.东南沿海地区新生代火山作用和地幔柱[J].地质学报,2004,78(6):781-788.
[17]李细光,史水平,黄洋,等.广西及其邻区现今构造应力场研究[J].地震研究,2007,30(3):235-240.
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