留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

大姚-姚安地区强震孕震机理——NW向褶皱节理的构造强化与活动

常祖峰 张艳凤 李鉴林

常祖峰, 张艳凤, 李鉴林, 2017. 大姚-姚安地区强震孕震机理——NW向褶皱节理的构造强化与活动. 地质力学学报, 23 (1): 161-172.
引用本文: 常祖峰, 张艳凤, 李鉴林, 2017. 大姚-姚安地区强震孕震机理——NW向褶皱节理的构造强化与活动. 地质力学学报, 23 (1): 161-172.
CHANG Zu-feng, ZHANG Yan-feng, LI Jian-lin, 2017. THE SEISMOGENIC MECHANISM OF STRONG EARTHQUAKES IN DAYAO-YAOAN AREA:STRUCTURE STRENGTHENING AND ACTIVITY OF THE NW STRIKE FOLD JOINTS. Journal of Geomechanics, 23 (1): 161-172.
Citation: CHANG Zu-feng, ZHANG Yan-feng, LI Jian-lin, 2017. THE SEISMOGENIC MECHANISM OF STRONG EARTHQUAKES IN DAYAO-YAOAN AREA:STRUCTURE STRENGTHENING AND ACTIVITY OF THE NW STRIKE FOLD JOINTS. Journal of Geomechanics, 23 (1): 161-172.

大姚-姚安地区强震孕震机理——NW向褶皱节理的构造强化与活动

基金项目: 

国家自然科学基金项目 41472204

014年度地震科技星火计划项目 XH14047

中国地质调查局地质调查项目“南北构造带活动构造体系综合调查与研究” 12120114002101

详细信息
    作者简介:

    常祖峰(1966-), 男, 正研级高级工程师, 主要从事地震地质和活动构造研究。E-mail:zufch@163.com

  • 中图分类号: P546;P315.2

THE SEISMOGENIC MECHANISM OF STRONG EARTHQUAKES IN DAYAO-YAOAN AREA:STRUCTURE STRENGTHENING AND ACTIVITY OF THE NW STRIKE FOLD JOINTS

  • 摘要: 以21世纪初滇中大姚-姚安-带接连发生的4次Ms 6.0~6.5级强震为例,通过分析该地区构造类型及其演化历史,结合川滇块体的现今运动特征和构造应力场,提出滇中构造区运动模型和特殊的孕震模式,探讨褶皱节理与地震活动的关系。研究表明,这些地震序列均有规律地沿北西方向展布,具有高度-致的沿北西向节理面右旋走滑的力学破裂机制。该地区断裂不发育,而是以北西向中生代褶皱构造为主。野外调查发现,该地区广泛发育与褶皱伴生的北西向纵向节理及北东向横向节理,前者较后者更为发育。这些节理密集成带,呈不等间距排列,带宽30~50 m,带内节理密度20~30条/m。节理面上发育有方解石脉和辉长岩脉,同时发育挤压片理化带、新鲜的水平擦痕和松软的断层泥,说明这些节理不仅与深部地壳有关联,而且近期有着新活动迹象。分析认为,在滇中块体南南东运动的背景下,这些地震是在现今北北西向挤压应力场作用下,北西向纵向节理发生构造强化、贯通、破裂的过程中产生的。“活节理”与活动断裂、活动褶皱等构造-样,是地球上广泛存在的活动构造之-。在特殊的构造环境和特定的构造应力场作用下,节理构造会演变为-种构造强化带或活化带,进而成为-种特殊的孕震构造。

     

  • 图  1  楚雄盆地区域构造格架

    Figure  1.  Region structure sketch of the Chuxiong basin

    图  2  大姚—姚安震区地质构造图

    Figure  2.  Geological structure map of Dayao-Yaoan earthquake area

    图  3  姚安南西吴家山—米树拉大山地质剖面图

    Figure  3.  The geological profile from Wujiashan to Miladashan in the southwest of Yaoan

    图  4  石羊镇—六苴地质剖面

    Figure  4.  The geological profile from Shiyang town to Liuju

    图  5  赵家山—拉摸地质剖面

    Figure  5.  The geological profile from Zhaojiashan to Lamo

    图  6  六苴—羊蹄江地质剖面

    Figure  6.  The geological profile from Liuju to Yangtijiang

    图  7  褶皱伴生节理示意图

    a-纵向节理; b-横向节理; c-斜向节理

    Figure  7.  Schematic diagram of joints generated by folds

    图  8  姚安和大姚地区节理玫瑰花图

    Figure  8.  The rose maps of joints in Yaoan and Dayao regions

    图  9  大姚—姚安地区褶皱节理发育情况

    a—节理面上断层及水平擦痕;b—沿节理侵入的方解石脉;c—沿节理侵入的辉长岩脉;d—节理面上的挤压片理化带;e—田房东节理密集带;f—昙花山一带节理密集带;g—大姚一带节理密集带;h—马尾阱南节理密集带

    Figure  9.  The developing situation of joints generated by folds in Dayao-Yaoan area

    图  10  地震序列分布图[1]

    Figure  10.  The distribution map of earthquakes series

    图  11  大姚6.2级地震震中地区水平面的速度分布及异常条带[6]

    Figure  11.  Velocity distribution and abnormal zones on horizon planes at varied depth in the epicenter area of M 6.2 Dayao Earthquare

    图  12  大姚—姚安地区孕震模型

    Figure  12.  Seismogenic model of Dayao-Yaoan region

    表  1  2000—2009年大姚、姚安地震震源机制解(据张建国等[1]修改)

    Table  1.   Focal mechanism of earthquakes in Yaoan-Dayao area from 2000 to 2009

    序号时间震级/MS节面Ⅰ节面ⅡP轴T轴
    走向/(°)倾角/(°)滑动角/(°)走向/(°)倾角/(°)滑动角/(°)走向/(°)倾角/(°)走向/(°)倾角/(°)
    12000-01-156.53880-212988-17035382636
    22003-07-216.21584-1410676-17333014615
    32003-10-166.120486-929581-17515992503
    42009-07-096.021386-1530475-176168132607
    下载: 导出CSV

    表  2  2000—2009年大姚、姚安地震震源机制解(据全球CMT结果)

    Table  2.   Focal mechanism of earthquakes in Yaoan-Dayao area from 2000 to 2009

    序号时间震级/Ms节面Ⅰ节面Ⅱ
    走向/(°)倾角/(°)滑动角/(°)走向/(°)倾角/(°)滑动角/(°)
    12000-01-156.52778-611884-168
    22003-07-216.220080-629184-170
    32003-10-166.11888-110889-178
    42009-07-096.020484-329487-174
    下载: 导出CSV
  • [1] 张建国, 刘丽芳, 李西, 等.姚安、大姚中强震区地震构造初析[J].地震地质, 2009, 31(3):536~543. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ200903014.htm

    ZHANG Jian-guo, LIU Li-fang, LI Xi, et al. Preliminary study on the seismotectonics of Yao'an and Dayao moderate strong earthquake area[J]. Seismology and Geology, 2009, 31(3):536~543. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ200903014.htm
    [2] 苏有锦.2003年7月21日、10月16日云南大姚6.2级和6.1级地震预测预报回顾与讨论[J].国际地震动态, 2004, (1):18~21. http://www.cnki.com.cn/Article/CJFDTOTAL-GJZT200401005.htm

    SU You-jin. Review and discussion for Dayao M6.2 and M6.1 in Yunnan province on July 21 and Oct. 16, 2003[J]. Recent Developments in World Seismology, 2004, (1):18~21. http://www.cnki.com.cn/Article/CJFDTOTAL-GJZT200401005.htm
    [3] 秦嘉政, 叶建庆, 钱晓东, 等.2000年姚安地震的震源参数[J].地球物理学报, 2003, 46(5):633~641. http://www.cnki.com.cn/Article/CJFDTOTAL-DQWX200305009.htm

    QIN Jia-zheng, YE Jian-qing, QIAN Xiao-dong, et al. Source parameters of the Yao'an earthquakes in 2000[J]. Chinese Journal of Geophysics, 2003, 46(5):633~641. http://www.cnki.com.cn/Article/CJFDTOTAL-DQWX200305009.htm
    [4] 王绍晋, 龙晓帆, 李忠华.2000年1月15日姚安6.5级地震的震源断层与震源应力场[J].中国地震, 2002, 18(1):59~66. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGZD200201005.htm

    WANG Shao-jin, LONG Xiao-fan, LI Zhong-hua. Focal fault and stress field of Yao'an M6.5 Earthquake on January 15, 2000[J]. Earthquake Research in China, 2002, 18(1):59~66. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGZD200201005.htm
    [5] 华卫、刘杰、郑斯华, 等. 2003年云南大姚6.2、6.1级地震序列特征分析及地震触发研究[J].中国地震, 2006, 22(1), 10~23. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGZD200601001.htm

    HUA Wei, LIU Jie, ZHENG Si-hua, et al. The characteristic analysis and seismic triggering study of the Dayao M6.2 and M6.1 earthquake sequences in 2003[J]. Earthquake Research in China, 2006, 22(1), 10~23. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGZD200601001.htm
    [6] 周龙泉, 刘杰, 马宏生, 等.2003年大姚6.2级、6.1级地震序列震源位置及震源区速度结构的联合反演[J].地震, 2009, 29(2):12~23. http://www.cnki.com.cn/Article/CJFDTOTAL-DIZN200902002.htm

    ZHOU Long-quan, LIU Jie, MA Hong-sheng, et al. Simultaneous inversion for the 2003 Dayao M6.2 and M6.1 earthquakes sequence locations and velocity structure in the hypocentral area[J].Earthquake, 2009, 29(2):12~23. http://www.cnki.com.cn/Article/CJFDTOTAL-DIZN200902002.htm
    [7] 王勤彩, 陈章立, 郑斯华.利用尾波包络线反演方法研究2003年大姚地震震中区下方地壳的非均匀结构[J].地震学报, 2010, 32(4):383~391. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXB201004000.htm

    WANG Qin-cai, CHEN Zhang-li, ZHENG Si-hua. Imaging crustal heterogeneity in 2003 Dayao, Yunnan, earthquake region by inverting coda envolopes[J]. Acta Seismologica Sinica, 2010, 32(4):383~391. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXB201004000.htm
    [8] 王伟君, 陈凌, 陈棋福, 等.2003年大姚地震震中区的速度和衰减结构[J].地球物理学报, 2007, 50(3):770~779. http://www.cnki.com.cn/Article/CJFDTOTAL-DQWX200703015.htm

    WANG Wei-jun, CHEN Ling, CHEN Qi-fu, et al. Velocity and attenuation structures in the focal area of 2003 Dayao earthquakes[J]. Chinese Journal of Geophysics, 2007, 50(3):770~779. http://www.cnki.com.cn/Article/CJFDTOTAL-DQWX200703015.htm
    [9] 王新岭, 刘杰, 张国民, 等.2000年姚安地震余震序列的剪切波分裂研究[J].地震学报, 2006, 28(2):119~131. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXB200602001.htm

    WANG Xin-ling, LIU Jie, ZHANG Guo-min, et al. Study on shear-wave splitting in the aftershock region of the Yao'an earthquak in 2000[J]. Acta Seismologica Sinica, 2006, 28(2):119~131. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXB200602001.htm
    [10] 高祥林, 罗焕炎.大陆板内震源断层的特征[J].地震地质, 1992, 14(3):259~264. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ199203009.htm

    GAO Xiang-lin, LUO Huan-yan. Characteristics of seismic-source faults within the continental plate[J]. Seismology and Geology, 1992, 14(3):259~264. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ199203009.htm
    [11] 尹福光, 蒲心纯, 朱同兴.楚雄复式盆地演化及形成的动力学机制[J].岩相古地理, 1997, 17(3):22~35. http://www.cnki.com.cn/Article/CJFDTOTAL-TTSD199703004.htm

    YIN Fu-guang, PU Xin-cun, ZHU Tong-xing. The dynamic mechanism for the formation and evolution of the Chuxiong composite basin in Yunnan[J].Sedimentary Facies and Palaeogeography, 1997, 17(3):22~35. http://www.cnki.com.cn/Article/CJFDTOTAL-TTSD199703004.htm
    [12] 云南省地质矿产局. 云南省区域地质志[M]. 北京: 地质出版社, 1990.

    Bureau of Geology and Mineral Resources of Yunnan Province. Regional geology of Yunnan Province[M]. Beijing:Geological Publishing House, 1990.
    [13] 任纪舜, 姜春发, 张正坤, 等.中国大地构造及其演化[M].北京:科学出版社, 1980:1~124.

    REN Ji-shun, JIANG Chun-fa, ZHANG Zheng-kun, et al. Geotectonics and its revolution in China[M].Beijing:Scientific Publishing House, 1980:1~124.
    [14] 吴根耀, 马力, 许效松, 等.喜马拉雅运动:对川滇交界区古地理重建的制约和楚雄盆地的改造[J].古地理学报, 2001, 13(2):3~10. http://www.cnki.com.cn/Article/CJFDTOTAL-GDLX200102002.htm

    WU Gen-yao, MA Li, XU Xiao-song, et al. Constraining of Himalayan orogeny on palinspastic reconstruction of the border area of Sichuan and Yunnan provinces and reformation of Chuxiong basin[J]. Journal of palaeogeography, 2001, 13(2):3~10. http://www.cnki.com.cn/Article/CJFDTOTAL-GDLX200102002.htm
    [15] Leloup P H, Lacassin R, Tapponnier P, et al.The Ailaoshan-Rediver shear zone (Yunnan, China), Tertiary transform boundary of Indochina[J].Tectonophysics, 1995, 251(1):3~84. doi: 10.1007/s11631-008-0351-4
    [16] Tapponnier P, Lacassin R, Leloup P H, et al.The Ailaoshan/Red River metamorphic belt:Tertiary left-lateral shear between Indochina and South China[J].Nature, 1990, 343(1):431~437.
    [17] 王恒, 仝亚博, 高亮, 等.青藏高原东南缘川滇地块古近纪沉积地层古地磁分析及其构造意义[J].地质通报, 2015, 34(1):45~56. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201501004.htm

    WANG Heng, TONG Ya-liang, GAO Liang, et al.Paleomagnetic analysis of Paleocene sedimentary strata in Chuan-Dian Fragment on the southeastern margin of the Tibetan Plateau and its tectonic implication[J]. Geological Bulletin of China, 2015, 34(1):45~56. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201501004.htm
    [18] 徐开礼, 朱志澄.构造地质学[M].北京:地质出版社, 1989:101~125.

    XU Kai-li, ZHU Zhi-cheng. Structural geology[M]. Beijing:Geological Publishing House, 1989:101~125.
    [19] 王长在, 吴建平, 房立华, 等.2009年姚安地震序列定位及震源区三维P波速度结构研究[J].地震学报, 2011, 33(2):123~133. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXB201102002.htm

    WANG Chang-zai, WU Jian-ping, FANG Li-hua, et al. Relocati on of aftershocks of the 2009 Yaoan Ms6.0 earthquake and 3-D P-wave velocity structure around its source region[J].Acta Seismologica Sinica, 2011, 33(2):123~133. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXB201102002.htm
    [20] Asano Y, Hasegawa A.Imaging the fault zones of the 2000 western Tottori earthquake by a new inversion method to estimate three-dimensional distribution of the scattering coefficient[J].Journal Geophysics Research, 2004, 109:B06306. http://www.academia.edu/8714869/Three-dimensional_spatial_distribution_of_scatterers_in_Galeras_volcano_Colombia
    [21] 钟大赉, 丁林.青藏高原的隆起过程及其机制探讨[J].中国科学(D辑), 1996, 26(4):289~295. http://www.cnki.com.cn/Article/CJFDTOTAL-JDXK199604000.htm

    ZHONG Da-lai, DING Lin. Rising process of the Qinghai-Xizang(Tibet) Plateau and its mechanism[J]. Science in China (Series D), 1996, 26(4):2289~295. http://www.cnki.com.cn/Article/CJFDTOTAL-JDXK199604000.htm
    [22] Molnar P, Tapponnier P.Cenozoic tectonics of Asia:Effects of continental collision[J].Science, 1975, 189:419~426. doi: 10.1126/science.189.4201.419
    [23] Peltzer G, Tapponnier P.Formation and evolution of strike-slip faults, rifts, and basins during the India-Asia collision:an experimental approach[J].J Geophys Res, 1988, 93(B12):15085~15117. doi: 10.1029/JB093iB12p15085
    [24] Tapponnier P, Molnar P. Active faulting and tectonics of China[J].J Geophys Res, 1977, 82(20):2905~2930. doi: 10.1029/JB082i020p02905
    [25] Tapponnier P, Peltzer G, Le Dain A Y, et al. Propagating extrusion tectonics in Asia:New insights from simple experiments with plasticine[J].Geology, 1982, 10(12):611~616. doi: 10.1130/0091-7613(1982)10<611:PETIAN>2.0.CO;2
    [26] 李玶, 汪良谋.云南川西地区地震地质基本特征的探讨[J].地质科学, 1975, (4):308~326. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKX197504001.htm

    LI Ping, WANG Liang-mou. Exploration of the seismo-geological features of the Yunnan-West Sichuan region[J]. Scientia Geologica Sinica, 1975, (4):308~326. http://www.cnki.com.cn/Article/CJFDTOTAL-DZKX197504001.htm
    [27] 阚荣举, 张四昌, 晏凤桐.我国西南地区现代构造应力场与现代构造活动特征的探讨[J].地球物理学报, 1977, 20(2):96~109. http://www.cnki.com.cn/Article/CJFDTOTAL-DQWX197702001.htm

    KAN Rong-ju, ZHANG Si-chang, YAN Feng-tong. Discuss on modern tectonic stress field and the tectonic activity features in southern region, China[J]. Chinese Journal of Geophysics, 1977, 20(2):96~109. http://www.cnki.com.cn/Article/CJFDTOTAL-DQWX197702001.htm
    [28] 邓起东, 张培震, 冉勇康, 等.中国活动构造基本特征[J].中国科学(D辑), 2002, 32(12):1020~1030. doi: 10.3321/j.issn:1006-9267.2002.12.007

    DENG Qi-dong, ZHANG Pei-zhen, RAN Yong-kang, et al. Basic characters of active geological structures in China[J]. Science in China (Series D), 2002, 45(12):1020~1030. doi: 10.3321/j.issn:1006-9267.2002.12.007
    [29] 马宗晋, 张家声, 汪-鹏. 青藏高原三维变形运动随时间的变化[C]//马宗晋, 汪-鹏, 张燕平. 现代地壳运动与地球动力学研究. 北京: 地震出版社, 2001.

    MA Zong-jin, ZHANG Jia-sheng, WANG Yi-peng. The 3-D deformation movement episodes of the Qinghai-Xizang plateau[C]//MA Zong-jin, WANG Yi-peng, ZHANG Yan-ping. Study on the recent deformation and dynamics of the Lithosphere of Qinghai-Xizang plateau. Beijing:Seismological Press, 2001.
    [30] 张培震, 王敏, 甘卫军, 等.GPS观测的活动断裂滑动速率及其对现今大陆动力作用的制约[J].地学前缘, 2003, 10(增刊):81~92. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY2003S1013.htm

    ZHANG Pei-zhen, WANG Min, GAN Wei-jun, et al.Slip rates along major active faults from GPS measurements and constrains on contemperatory continental tectonics[J].Earth Science Frontiers, 2003, 10(Suppl.):81~92. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY2003S1013.htm
    [31] 张培震, 邓起东, 张国民, 等.中国大陆的强震活动与活动地块[J].中国科学(D辑), 2003, 33(增刊):12~20. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY2003S1012.htm

    ZHANG Pei-zhen, DENG Qi-dong, ZHANG Guo-min, et al. Active tectonic blocks and strong earthquakes in continental China[J]. Science in China (Series D), 2003, 33(Suppl.):12~20. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY2003S1012.htm
    [32] 王琪, 张培震, 牛之俊, 等.中国大陆现今地壳运动和构造变形[J].中国科学(D辑), 2001, 31(7):529~536. http://cdmd.cnki.com.cn/Article/CDMD-85401-1013341969.htm

    WANG Qi, ZHANG Pei-zhen, NIU Zhi-jun, et al. Modern crustal movement and tectonic deformation of Chinese continent[J]. Science in China (Series D), 2001, 31(7):529~536. http://cdmd.cnki.com.cn/Article/CDMD-85401-1013341969.htm
    [33] 程万正, 刁桂苓, 吕弋培, 等.川滇地块的震源力学机制、运动速率和活动方式[J].地震地质, 2003, 25(1):71~87. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ200301007.htm

    CHENG Wan-zheng, DIAO Gui-ling, LV Yi-pei, et al. Focal mechanisms, displacement rate and mode of motion of the Sichuan-Yunnan block[J].Seismology and Geology, 2003, 25(1):71~87. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ200301007.htm
    [34] 中国地震局震害防御司, 中国近代地震目录[M]. 北京: 中国科学技术出版社, 1999.

    Earthquake Disaster Prevention Division of Natianal Earthquake Administration Bureau. The recent earthquake catalog in China[M]. Beijing:China Science and Technology Press, 1999.
    [35] 虢顺民. 褶皱构造区内的华坪地震[C]//国家地震局西南烈度队. 川滇强震区地震地质调查汇编. 北京: 地震出版社, 1979.

    GUO Shun-min. The Huaping earthquake within Folding tectonic area[M]//Southwestern Intensity Team. The compilation of seismo-tectonic in Sichuan-Yunnan strong earthquake region. Beijing:Seismological Press, 1979.
    [36] 马宗晋.华北地壳多(应力集中)点应力场与地震[J].地震地质, 1980, 2(1):39~48.

    MA Zong-jin. Multiple (stress concentration) site stress field and earthquake in northern China[J]. Seismology and Geology, 1980, 2(1):39~48.
  • 加载中
图(12) / 表(2)
计量
  • 文章访问数:  120
  • HTML全文浏览量:  142
  • PDF下载量:  17
  • 被引次数: 0
出版历程
  • 收稿日期:  2016-05-10
  • 刊出日期:  2017-02-28

目录

    /

    返回文章
    返回