最大有效力矩准则约束下的广西罗阳山地震、地质与地貌效应
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摘要
使用重新调查后的1936年灵山63/4级地震的烈度资料,结合罗阳山西北麓和南麓的河流地貌与地质构造考察,参考该地区裂变径迹年代学资料,探讨了罗阳山地区的地质力学环境。重新调查后的极震区等烈度区有北北西和北东2个优势方向区域,这2个区域围绕北北西向的泗州断层和北东向的寨圩断层展布。在构造与地貌调查中发现:罗阳山山体有地貌隆升表现,并得到了裂变径迹证据支持;罗阳山西北麓山前冲沟具右旋活动表现;泗州断层内部破裂面的倾向以南西向为优势方向,并具顺时针旋转和高倾角特征。地震分布显示:寨圩断层和泗州断层交汇部位的东南侧有小地震密集展布现象。经分析后认为,以上构造地貌现象是最大有效力矩准则约束下的地震、地质和地貌效应。
In this paper,data about the intensity distribution in the meizoseismal area of Lingshan M=63/4 earthquake,geological structure,geomorphologic investigation and fission track dating were used to discuss the geomechanical environment in Lingshan Hill area.In the meizoseismal area,a T-shape IX+zone coupled NE Zhaixu Fault and NNW Sizhou Fault.Researches on tectonics and geomorphology showed uplifting of Luoyangshan Hill.The data of fission track dating supported this geomorphologic phenomenon.A new channel in front of Luoyangshan Hill(Gaodong) appeared in the west of the old channel.Distribution of earthquakes showed that a lot of low magnitude earthquakes concentratedly occurred in the southeast of the cross zone of NE Zhaixu and NNW Sizhou faults.All above were controlled by the Maximum Effective Moment Criterion(MEMC).
In this paper,data about the intensity distribution in the meizoseismal area of Lingshan M=63/4 earthquake,geological structure,geomorphologic investigation and fission track dating were used to discuss the geomechanical environment in Lingshan Hill area.In the meizoseismal area,a T-shape IX+zone coupled NE Zhaixu Fault and NNW Sizhou Fault.Researches on tectonics and geomorphology showed uplifting of Luoyangshan Hill.The data of fission track dating supported this geomorphologic phenomenon.A new channel in front of Luoyangshan Hill(Gaodong) appeared in the west of the old channel.Distribution of earthquakes showed that a lot of low magnitude earthquakes concentratedly occurred in the southeast of the cross zone of NE Zhaixu and NNW Sizhou faults.All above were controlled by the Maximum Effective Moment Criterion(MEMC).
引文
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[15]周荣军,蒲晓虹,何玉林,等.四川岷江断裂带北段的新活动、岷山断块的隆起及其与地震活动的关系[J].地震地质,2000,22(3):285～294.ZHOU Rong-jun,PU Xiao-hong,HE Yu-lin,et al.Recent activity of Minjiang fault zone,uplift of Minshan block and their relationship with seismicity of Sichuan[J].Seismology and Geology,2000,22(3):285～294.
[16]XU Zhi-qin,JI Shao-cheng,LI Hai-bing,et al.Uplift of the Longmenshan range and the Wenchuan earthquake[J].Episodes,2008,31(3):291～301.
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[18]ZHENG Ya-dong,WANG Tao,MA Ming-bo,et.al.Maximum effective moment criterion and the origin of low-angle normal faults[J].Journal of Structural Geology,2004,26(2):271～285.
[19]郑亚东,王涛,王新社.新世纪构造地质学与力学的新理论——最大有效力矩准则[J].自然科学进展,2005,15(2):142～148.ZHENG Ya-dong,WANG Tao,WANG Xin-she.The maximum effective moment criterion:A new theory in geology and mechanics in the21 th Century[J].Progress in Natural Science,2005,15(2):l42～l48.
[20]郑亚东,王涛,王新社.神秘的109.4°——共轭变形带的夹角[J].地质科学,2007,42(1):1～9.ZHENG Ya-dong,WANG Tao,WANG Xin-she.Miraculous109.4°:The angle of conjugate deformation zones[J].Chinese Journal of Geology,2007,42(1):1～9.
[21]郑亚东,王涛,王新社.最大有效力矩准则的理论与实践[J].北京大学学报:自然科学版,2007,43(2):145～156.ZHENG Ya-dong,WANG Tao,WANG Xin-she.Theory and practice of the maximum effective moment criterion(MEMC)[J].Acta Scientiarum Maturalium Universitatis Pekinensis,2007,43(2):145～156.
[22]郑亚东,张进江,王涛.实践中发展的最大有效力矩准则[J].地质力学学报,2009,15(3):209～217 ZHENG Ya-dong,ZHANG Jin-jiang,WANG Tao.The maximum-effective-moment criterion developing in practice[J].Journal of Geomechanics,2009,15(3):209～217.
[23]广西壮族自治区地质矿产局.广西壮族自治区区域地质志[M].北京:地质出版社,1985:1～553,652～712.Guangxi Zhuang Autonomous Region Bureau of Geology and Mineral Resources.Regional geology of Guangxi Zhuang Autonomous Region[M].Beijing:Geological Publishing House,1985:1～553,652～712.
[24]谢毓寿.新的中国地震烈度表[J].地球物理学报,1957,6(1):35～47.XIE Yu-shou.A new scale of seismic intensity adapted to the conditions in Chinese territories[J].Acta Geophysica Sinica,1957,6(1):35～47.
[25]国家地震局科技监测司.地震现场工作大纲和震情分析指南[M].北京:地震出版社,1990.Science and Technology Monitoring Division of the State Seismological Bureau.Seismic field work plan and the earthquake situation analysis guide[M].Beijing:Seismological Publishing House,1990.
[26]中国地震局.地震现场工作大纲和技术指南[M].北京:地震出版社,1998:111～113.China Earthquake Administration.Earthquake site work plan and technical guidelines[M].Beijing:Seismological Publishing House,1998:111～113.
[27]广西壮族自治区地方志编篡委员会.广西通志-地震志[M].南宁:广西人民出版社,1990:18.Compilation Committee of Guangxi Zhuang Autonomous Region Chrnoicles.Annals of Guangxi:Earthquake[M].Nanning:Guangxi People's Publishing House,1990:18.
[28]覃小锋,潘罗忠,胡贵昂,等.桂南钦防构造带两侧中新生代差异隆升的磷灰石裂变径迹证据[J].桂林理工大学学报,2010,30(3):325～331.QIN Xiao-feng,PAN Luo-zhong,HU Gui-ang,et al.Apatite fission track evidence for Mesozoic-Cenozoic differential uplift on both sides of Qingfang tectonic belt in southern Guangxi[J].Journal of GuilinUniversity of Technology,2010,30(3):325～331.
[29]王二七,苏哲,许光.我国的一些造山带的侧向挤出构造[J].地质科学,2009,44(4):1266～1288.WANG Er-qi,SU Zhe,XU Guang.A case study on lateral extrusion occourred along some orogenic belts in China[J].Chinese Journal of Geology,2009,44(4):1266～1288.
[30]童亨茂,王明阳,郝化武,等.最大有效力矩的理论拓展[J].地质力学学报,2011,17(4):312～321.TONG Heng-mao,WANG Ming-yang,HAO Hua-wu,et al.Theoretical development of Maximum Effective Moment Criterion[J].Journal of Geomechanics,2011,17(4):312～321.
[2]陈恩民,黄咏茵.华南十九次强震暨南海北部陆缘地震带概述[J].华南地震,1984,4(1):11～32.CHEN En-min,HUANG Yong-yin.Nineteen earthquakes in south China and overview of seismic belt in the margin zone of the northern South China Sea[J].South China Journal of Seismology,1984,4(1):11～32.
[3]李伟琦.1936年灵山6级地震极震区烈度分布及发震构造[J].华南地震,1992,12(3):46～50.LI Wei-qi.Intensity distribution of Lingshan M=6earthquake in Meizoseismic area and its seismogenic structure[J].South China Journal of Seismology,1992,12(3):46～50.
[4]任镇寰,杨廉法,邓业权.1936年广西灵山6级地震极震区震害和地震影响场研究[J].中国地震,1996,12(1):83～92.REN Zhen-huan,YANG Lian-fa,DENG Ye-quan.Investigation on the earthquake damages of Meizoseismal region and the influence field of the1936Lingshan earthquake with M=6in Guangxi[J].Earthquake Research in China,1996,12(1):83～92.
[5]周本刚,杨晓平,杜龙.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.ZHOU Ben-gang,YANG Xiao-ping,DU Long.Discussion on the segmentation of Fangcheng-Lingshan Fault,Guangxi Province and determination of related potential[J].Technology for Earthquake Disaster Prevention,2008,3(1):8～19.
[6]王乃樑,韩慕康.构造地貌学的理论、方法、应用与动向[C]//中国地理学会地貌专业委员会.中国地理学会第一次构造地貌学术讨论会选集.北京:科学出版社,1984:1～9.WANG Nai-liang,HAN Mu-kang.Theory,method,application and trend of geomorphology[C]//Professional Committee of Landscape in Geographical Society of China.Symposium of the first academic conference of tectonic geomorphology.Beijing:Science Press,1984:1～9.
[7]Schumm S A,Dumont J F,Holbrook J M.Active tectonics and alluvial rivers[M].UK:Cambridge University Press,2000:1～275.
[8]李涛,陈杰,肖伟鹏,等.利用变形河流阶地限定帕米尔北缘木什背斜的缩短、隆升和侧向扩张[J].地震地质,2011,33(2):308～322.LI Tao,CHEN Jie,XIAO Wei-peng,et al.Using deformation terraces to confine the shortening,uplift and lateral propagation of the Mushi anticline,northern margin of the Pamir[J].Seismology and Geology,2011,33(2):308～322.
[9]郑荣章,徐锡伟,马文涛,等.阿尔金断裂带西段莫勒切河河口阶地的构造及气候意义[J].地震地质,2011,33(2):323～336.ZHENG Rong-zhang,XU Xi-wei,MA Wen-tao,et al.Tectonic and climatic signification of terraces at the outlet of Moleqiehe River,the western segment of Altyn Tagh fault zone[J].Seismology and Geology,2011,33(2):323～336.
[10]李勇,曹叔尤,周荣军,等.晚新生代岷江下蚀速率及其对青藏高原东缘山脉隆升机制和形成时限的定量约束[J].地质学报,2005,79(1):28～37.LI Yong,CAO Shu-you,ZHOU Rong-jun,et al.Late Cenozoic Minjiang incision rate and its constraint on the uplift of the eastern margin of the Tibetan Plateau[J].Acta Geologica Sinica,2005,79(1):28～37.
[11]Clark M K,Schoenbohm L M,Royden L H,et al.Surface uplift,tectonics,and erosion of eastern Tibet from large-scale drainage patterns[J].Tectonics,2004,23:1～21.
[12]周厚云,高全洲,朱照宇,等.气候环境变化的河流响应[J].中山大学学报:自然科学版,2001,40(6):81～85.ZHOU Hou-yun,GAO Quan-zhou,ZHU Zhao-yu,et al.River response to climatic and environmental change[J].Acta Scientlarum Maturalium Universitatis Sunyatseni,2001,40(6):81～85.
[13]艾南山,梁国昭,Scheidegger A E.东南沿海水系及新构造应力场[J].地理学报,1982,37(2):111～122.AI Nan-shan,LIANG Guo-zhao,Scheidegger A E.The valley trends and neotectonic stress field of southeast China[J].Acta Geographica Sinica,1982,37(2):111～122.
[14]尹克坚.广西地区的水系展布方式与活动断裂及新构造应力场的关系[J].华南地震,1995,15(1):62～67.YIN Ke-jian.Relations of river system with active faults and neotectonic stress field in Guangxi area[J].South China Journal of Seismology,1995,15(1):62～67.
[15]周荣军,蒲晓虹,何玉林,等.四川岷江断裂带北段的新活动、岷山断块的隆起及其与地震活动的关系[J].地震地质,2000,22(3):285～294.ZHOU Rong-jun,PU Xiao-hong,HE Yu-lin,et al.Recent activity of Minjiang fault zone,uplift of Minshan block and their relationship with seismicity of Sichuan[J].Seismology and Geology,2000,22(3):285～294.
[16]XU Zhi-qin,JI Shao-cheng,LI Hai-bing,et al.Uplift of the Longmenshan range and the Wenchuan earthquake[J].Episodes,2008,31(3):291～301.
[17]Hubbard J,Shaw J H.Uplift of the Longmenshan and Tibetan Plateau,and the2008Wenchuan(M=7.9)earthquake[J].Nature,2009,458:194～197.
[18]ZHENG Ya-dong,WANG Tao,MA Ming-bo,et.al.Maximum effective moment criterion and the origin of low-angle normal faults[J].Journal of Structural Geology,2004,26(2):271～285.
[19]郑亚东,王涛,王新社.新世纪构造地质学与力学的新理论——最大有效力矩准则[J].自然科学进展,2005,15(2):142～148.ZHENG Ya-dong,WANG Tao,WANG Xin-she.The maximum effective moment criterion:A new theory in geology and mechanics in the21 th Century[J].Progress in Natural Science,2005,15(2):l42～l48.
[20]郑亚东,王涛,王新社.神秘的109.4°——共轭变形带的夹角[J].地质科学,2007,42(1):1～9.ZHENG Ya-dong,WANG Tao,WANG Xin-she.Miraculous109.4°:The angle of conjugate deformation zones[J].Chinese Journal of Geology,2007,42(1):1～9.
[21]郑亚东,王涛,王新社.最大有效力矩准则的理论与实践[J].北京大学学报:自然科学版,2007,43(2):145～156.ZHENG Ya-dong,WANG Tao,WANG Xin-she.Theory and practice of the maximum effective moment criterion(MEMC)[J].Acta Scientiarum Maturalium Universitatis Pekinensis,2007,43(2):145～156.
[22]郑亚东,张进江,王涛.实践中发展的最大有效力矩准则[J].地质力学学报,2009,15(3):209～217 ZHENG Ya-dong,ZHANG Jin-jiang,WANG Tao.The maximum-effective-moment criterion developing in practice[J].Journal of Geomechanics,2009,15(3):209～217.
[23]广西壮族自治区地质矿产局.广西壮族自治区区域地质志[M].北京:地质出版社,1985:1～553,652～712.Guangxi Zhuang Autonomous Region Bureau of Geology and Mineral Resources.Regional geology of Guangxi Zhuang Autonomous Region[M].Beijing:Geological Publishing House,1985:1～553,652～712.
[24]谢毓寿.新的中国地震烈度表[J].地球物理学报,1957,6(1):35～47.XIE Yu-shou.A new scale of seismic intensity adapted to the conditions in Chinese territories[J].Acta Geophysica Sinica,1957,6(1):35～47.
[25]国家地震局科技监测司.地震现场工作大纲和震情分析指南[M].北京:地震出版社,1990.Science and Technology Monitoring Division of the State Seismological Bureau.Seismic field work plan and the earthquake situation analysis guide[M].Beijing:Seismological Publishing House,1990.
[26]中国地震局.地震现场工作大纲和技术指南[M].北京:地震出版社,1998:111～113.China Earthquake Administration.Earthquake site work plan and technical guidelines[M].Beijing:Seismological Publishing House,1998:111～113.
[27]广西壮族自治区地方志编篡委员会.广西通志-地震志[M].南宁:广西人民出版社,1990:18.Compilation Committee of Guangxi Zhuang Autonomous Region Chrnoicles.Annals of Guangxi:Earthquake[M].Nanning:Guangxi People's Publishing House,1990:18.
[28]覃小锋,潘罗忠,胡贵昂,等.桂南钦防构造带两侧中新生代差异隆升的磷灰石裂变径迹证据[J].桂林理工大学学报,2010,30(3):325～331.QIN Xiao-feng,PAN Luo-zhong,HU Gui-ang,et al.Apatite fission track evidence for Mesozoic-Cenozoic differential uplift on both sides of Qingfang tectonic belt in southern Guangxi[J].Journal of GuilinUniversity of Technology,2010,30(3):325～331.
[29]王二七,苏哲,许光.我国的一些造山带的侧向挤出构造[J].地质科学,2009,44(4):1266～1288.WANG Er-qi,SU Zhe,XU Guang.A case study on lateral extrusion occourred along some orogenic belts in China[J].Chinese Journal of Geology,2009,44(4):1266～1288.
[30]童亨茂,王明阳,郝化武,等.最大有效力矩的理论拓展[J].地质力学学报,2011,17(4):312～321.TONG Heng-mao,WANG Ming-yang,HAO Hua-wu,et al.Theoretical development of Maximum Effective Moment Criterion[J].Journal of Geomechanics,2011,17(4):312～321.
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