贺兰山西麓断裂右旋走滑的地质地貌证据及其构造意义

doi:10.3969/j.issn.0253-4967.2017.06.014

摘要/Abstract

摘要： 贺兰山西麓断裂的水平运动性质对厘定阿拉善地块与华北地块的现今界线，探讨青藏高原向NE扩展的影响范围均具有重要意义。通过野外地质地貌调查发现：贺兰山西麓断裂切割了新近系背斜的西翼，干河沟组和清水营组之间的地质界线被右旋错动，位移>800m；在断裂附近的第四纪洪积高台地上，多处发育了与主断裂相交的次级张性节理（裂隙），其锐角指示主断裂具有右旋走滑性质；贺兰山西麓断裂南端发育的与主断裂斜交的正断层，表明断裂西盘向N运动并在端部形成拉张调整区，反映了主断裂水平运动为右旋走滑；形成于不同时期不同规模的冲沟跨断裂发生了明显的右旋扭动。因此，贺兰山西麓断裂的水平运动是右旋走滑，而非前人认为的左旋走滑。从断裂活动和新生代地层变形的相互关系分析，认为晚新生代以来，在贺兰山西麓断裂附近存在2个阶段的构造变形：即早期褶皱变形，后期断裂活动。这2次构造变形是青藏高原对阿拉善地块的持续推挤，导致其向NE侧向挤出的结果。青藏高原扩展的影响范围在上新世末已抵达贺兰山西麓地区，并导致贺兰山西麓断裂的右旋走滑运动，形成了阿拉善地块和华北地块的现今边界，也是青藏高原扩展的最新前缘。

关键词: 贺兰山西麓断裂, 右旋走滑, 青藏高原东北缘, 构造变形

Abstract: The horizontal movement of the Helan Shan west-piedmont fault is important to determination of the present-day boundary between the Alashan and North China blocks as well as to the exploration of the extent of the northeastward expansion of the Tibetan plateau. Field geological surveys found that this fault cuts the west wing of the Neogene anticline, which right-laterally offset the geological boundary between Ganhegou and Qingshuiying Formations with displacement over 800m. The secondary tensional joints (fissures)intersected with the main faults developed on the Quaternary flood high platform near the fault, of which the acute angles indicate its dextral strike slip. The normal faults developed at the southern end of the Helan Shan west-piedmont fault show that the west wall of this fault moves northward, and the tensional adjustment zone formed at the end of the strike slip fault, which reflects that the horizontal movement of the main fault is dextral strike slip. The dextral dislocation occurred in the gully across the fault during different periods. Therefore, the Helan Shan west-piedmont fault is a dextral strike slip fault rather than a sinistral strike slip fault as previous work suggested. The relationship between the faulting and deformation of Cenozoic strata demonstrates that there were two stages of tectonic deformation near the Helan Shan west-piedmont fault since the late Cenozoic, namely early folding and late faulting. These two tectonic deformations are the result of the northeastward thrust on the Alashan block by the Tibet Plateau. The influence range of Tibetan plateau expansion has arrived in the Helan Shan west-piedmont area in the late Pliocene leading to the dextral strike slip of this fault as well as formation of the current boundary between the Alashan and North China blocks, which is also the youngest front of the Tibetan plateau.

Key words: Helan Shan west-piedmont fault, Dextral strike slip, Northeastern margin of the Tibetan plateau, tectonic deformation

中图分类号:

P315.2

雷启云, 张培震, 郑文俊, 杜鹏, 王伟涛, 俞晶星, 谢晓峰. 贺兰山西麓断裂右旋走滑的地质地貌证据及其构造意义[J]. 地震地质, 2017, 39(6): 1297-1315.

LEI Qi-yun, ZHANG Pei-zhen, ZHENG Wen-jun, DU Peng, WANG Wei-tao, YU Jing-xing, XIE Xiao-feng. GEOLOGICAL AND GEOMORPHIC EVIDENCE FOR DEXTRAL STRIKE SLIP OF THE HELAN SHAN WEST-PIEDMONT FAULT AND ITS TECTONIC IMPLICATIONS[J]. SEISMOLOGY AND GEOLOGY, 2017, 39(6): 1297-1315.

参考文献

柴炽章, 孟广魁, 杜鹏, 等. 2006. 隐伏活动断层的多层次综合探测:以银川隐伏活动断层为例［J］. 地震地质, 28(4):536-546. doi:10.3969/j.issn.0253-4967.2006.04.002.CHAI Chi-zhang, MENG Guang-kui, DU Peng, et al. 2006. Comprehensive multi-level exploration of buried active fault:An example of Yinchuan buried active fault［J］. Seismology and Geology, 28(4):536-546(in Chinese).
柴炽章, 孟广魁, 马贵仁, 等. 2011. 银川市活动断层探测与地震危险性评价[M]. 北京:科学出版社.CHAI Chi-zhang, MENG Guang-kui, MA Gui-ren, et al. 2011. Active Faults Exploration and Seismic Hazard Assessment in Yinchuan City[M]. Science Press, Beijing(in Chinese).
长庆油田石油地质志编写组. 1992. 中国石油地质志(卷十二)[M]. 北京:石油工业出版社.Group of Petroleum Geological Records in Changqing Oilfield. 1992. Petroleum Geology of China(Vo1. 12)[M]. Petroleum Industry Press, Beijing(in Chinese).
国家地震局"鄂尔多斯活动断裂系"课题组. 1988. 鄂尔多斯周缘活动断裂系[M]. 北京:地震出版社.The Research Group on Active Fault System around Ordos Massif, SSB. 1998. Active Fault System around Ordos Massif[M]. Seismological Press, Beijing(in Chinese).
国家地震局地质研究所, 宁夏回族自治区地震局. 1990. 海原活动断裂带[M]. 北京:地震出版社.Institute of Geology, China Earthquake Administration, Ningxia Hui Autonomous Region Seismological Bureau. 1990. The Haiyuan Fault Zone[M]. Seismological Press, Beijing(in Chinese).
邓起东, 张维岐, 张培震, 等. 1989. 海原走滑断裂带及其尾端挤压构造［J］. 地震地质, 11(1):1-14.DENG Qi-dong, ZHANG Wei-qi, ZHANG Pei-zhen, et al. 1989. Haiyuan strike-slip fault zone and its compressional structures of the end［J］. Seismology and Geology, 11(1):1-14.
胡亚轩, 崔笃信, 季灵运, 等. 2011. 鄂尔多斯块体及其周缘上地幔各向异性分析研究［J］. 地球物理学报, 54(6):1549-1558.HU Ya-xuan, CUI Du-xin, JI Ling-yun, et al. 2011. Seismic anisotropy of upper mantle in Ordos block and adjacent regions［J］. Chinese Journal of Geophysics, 54(6):1549-1558(in Chinese).
雷启云, 柴炽章, 杜鹏, 等. 2011. 基于钻探的芦花台隐伏断层晚第四纪活动特征［J］. 地震地质, 33(3):602-614. doi:10.3969/j.issn.0253-4967.2011.03.010.LEI Qi-yun, CHAI Chi-zhang, DU Peng, et al. 2011. Activity characteristics of Luhuatai buried fault since Late Quaternary revealed by drilling［J］. Seismology and Geology, 33(3):602-614(in Chinese).
雷启云, 柴炽章, 杜鹏, 等. 2015. 1739年平罗8级地震发震构造［J］. 地震地质, 37(2):413-429. doi:10.3969/j.issn.0253-4967.2015.02.006.LEI Qi-yun, CHAI Chi-zhang, DU Peng, et al. 2015. The seismogenic structure of the M8.0 Pingluo earthquake in 1739［J］. Seismology and Geology, 37(2):413-429(in Chinese).
雷启云, 柴炽章, 孟广魁, 等. 2008. 银川隐伏断层钻孔联合剖面探测［J］. 地震地质, 30(1):250-263. doi:10.3969/j.issn.0253-4967.2008.01.018.LEI Qi-yun, CHAI Chi-zhang, MENG Guang-kui, et al. 2008. Composite drilling section exploration of Yinchuan buried fault［J］. Seismology and Geology, 30(1):250-263(in Chinese).
雷启云, 柴炽章, 郑文俊, 等. 2014. 钻探揭示的黄河断裂北段活动性和滑动速率［J］. 地震地质, 36(2):464-477. doi:10.3969/j.issn.0253-4967.2014.02.015.LEI Qi-yun, CHAI Chi-zhang, ZHENG Wen-jun, et al. 2014. Activity and slip rate of the northern section of Yellow River Fault revealed by drilling［J］. Seismology and Geology, 36(2):464-477(in Chinese).
雷惊昊. 2015. 贺兰山西麓断裂活动性质的研究. 北京:中国地震局地壳应力研究所.LEI Jing-hao. 2015. Study on the activity of western Helan Mountain Fault. Institute of Crustal Dynamics of China Earthquake Administration, Beijing.
李清河, 郭守年, 吕德徽. 1999. 鄂尔多斯西缘与西南缘深部结构与构造[M]. 北京:地震出版社.LI Qing-he, GUO Shou-nian, LV De-hui. 1999. Deep Structure and Tectonics of the Western and Southwestern Ordos[M]. Seismological Press, Beijing(in Chinese).
闵伟, 柴炽章, 王萍, 等. 1992. 罗山东麓断裂全新世活动特征的初步研究［J］. 中国地震, 8(4):49-54.MIN Wei, CHAI Chi-zhang, WANG Ping, et al. 1992. Preliminary study on the Holocene active fault features at the eastern piedmont of the Luoshan Mountain［J］. Earthquake Research in China, 8(4):49-54(in Chinese).
宁夏回族自治区地质矿产局. 1990. 中华人民共和国地质矿产部地质专报一, 第22号:区域地质, 宁夏回族自治区区域地质志[M]. 北京:地质出版社.Ningxia Geological Bureau. 1990. Regional Geology of Ningxia Hui Autonomous Region[M]. Geological Publishing House, Beijing(in Chinese).
孙武城, 徐杰, 杨主恩, 等. 1992. 上海奉贤至内蒙古阿拉善左旗地学断面[M]. 北京:地震出版社.SUN Wu-cheng, XU Jie, YANG Zhu-en, et al. 1992. The Geoscience Transect in Fengxian of Shanghai to Alashanzuoqi of Inner Mongolia[M]. Seismological Press, Beijing(in Chinese).
汤锡元, 郭忠铭, 陈荷立. 1992. 陕甘宁盆地西缘逆冲推覆构造及油气勘探[M]. 西安:西北大学出版社.TANG Xi-yuan, GUO Zhong-ming, CHEN He-li. 1992. The Study and Petroleum Prospect of Thrust Nappe in the West Margin of Shanxi-Gansu Ningxia Basin[M]. Northwest University Press, Xi'an(in Chinese).
王萍, 王增光. 1997. 阿拉善活动块体的划分及归宿［J］. 地震, 17(1):103-l12.WANG Ping, WANG Zeng-guang. 1997. Division of the Alxa Block and its attribution［J］. Earthquake, 17(1):103-l12(in Chinese).
杨明芝, 马禾青, 廖玉华. 2007. 宁夏地震活动与研究[M]. 北京:地震出版社.YANG Ming-zhi, MA He-qing, LIAO Yu-hua. 2007. Earthqauek Research and Activity of Ningxia[M]. Seismological Press, Beijing(in Chinese).
俞晶星, 郑文俊, 雷启云, 等. 2013. 阿拉善地块南部雅布赖山前断裂的运动学特征及意义初探［J］. 地震地质, 35(4):731-744. doi:10.3969/j.issn.0253-4967.2013.04.004.YU Jing-xing, ZHENG Wen-jun, LEI Qi-yun, et al. 2013. Neotectonics and kinemetics along the Yabrai range-front fault in the south Alashan block and its implications for regional tectonics［J］. Seismology and Geology, 35(4):731-744(in Chinese).
张培震, 邓起东, 张国民, 等. 2003. 中国大陆的强震活动与活动地块［J］. 中国科学(D辑), 33(S1):12-20.ZHANG Pei-zhen, DENG Qi-dong, ZHANG Guo-min, et al. 2003. Active tectonic blocks and strong earthquakes in the continent of China［J］. Science in China(Ser D), 46(S2):13-24.
郑文俊, 袁道阳, 张培震, 等. 2016. 青藏高原东北缘活动构造几何图像、运动转换与高原扩展［J］. 第四纪研究, 36(4):775-788.ZHENG Wen-jun, YUAN Dao-yang, ZHANG Pei-zhen, et al. 2016. Tectonic geometry and kinematic dissipation of the active faults in the northeastern Tibetan plateau and their implications for understanding northeastward growth of the Plateau［J］. Quaternary Sciences, 36(4):775-788(in Chinese).
朱志澄. 1999. 构造地质学[M]. 2版. 北京:中国地质大学出版社:213-227.ZHU Zhi-cheng. 1999. Structural Geology[M]. 2nd ed. China University of Geosciences Press, Beijing:213-227(in Chinese).
Burchfiel B C, Zhang P Z, Wang Y P, et al. 1991. Geology of the Haiyuan fault zone, Ningxia-Hui Autonomous Region, China, and its relation to the evolution of the northeastern margin of the Tibetan plateau［J］. Tectonics, 10(6):1091-1110.
Deng Q D, Liao Y H. 1996. Paleoseismology along the range-front fault of Helan Mountains, North Central China［J］. Journal of Geophysical Research, 101(B3):5873-5894.
Deng Q D, Zhang P Z, Ran Y K, et al. 2003. Basic characteristics of active tectonics of China［J］. Science in China(Ser D), 46(4):356-372.
Hao M, Wang Q L, Cui D X, et al. 2016. Present-day crustal vertical motion around the ordos block constrained by precise leveling and GPS data［J］. Surveys in Geophysics, 37(5):923-936.
Lei Q Y, Zhang P Z, Zheng W J, et al. 2016. Dextral strike-slip of Sanguankou-Niushoushan fault zone and extension of arc tectonic belt in the northeastern margin of the Tibet Plateau［J］. Science China Earth Sciences, 59(5):1025-1040.
Liu J H, Zhang P Z, Zheng D W, et al. 2010. Pattern and timing of late Cenozoic rapid exhumation and uplift of the Helan Mountain, China［J］. Science China Earth Sciences, 53(3):345-355.
Meyer B, Tapponnier P, Bourjot L, et al. 1998. Crustal thickening in Gansu-Qinghai, lithospheric mantle subduction, and oblique, strike-slip controlled growth of the Tibet Plateau［J］. Geophysical Journal International, 135(1):1-47.
Min W, Jiao D C, Chai C Z, et al. 2003. Characteristics of the active Luoshan Fault since late Pleistocene, north central China［J］. Annals of Geophysics, 46(5):997-1014.
Molnar P, Tapponnier P. 1975. Cenozoic tectonics of Asia:effects of a continental collision［J］. Science, 189(4201):419-426.
Tapponnier P, Xu Z Q, Roger F, et al. 2001. Oblique stepwise rise and growth of the Tibet Plateau［J］. Science, 294(5547):1671-1677.
Wang W T, Kirby E, Zhang P Z, et al. 2013. Tertiary Basin evolution along the northeastern margin of the Tibetan plateau:evidence for basin formation during Oligocene transtension［J］. Geological Society of America Bulletin, 125(3-4):377-400.
Wang W T, Zhang P Z, Kirby E, et al. 2011. A revised chronology for Tertiary sedimentation in the Sikouzi Basin:implications for the tectonic evolution of the northeastern corner of the Tibetan plateau［J］. Tectonophysics, 505(1-4):100-114.
Yu J X, Zheng W J, Kirby E, et al. 2016. Kinematics of Late Quaternary slip along the Yabrai Fault:implications for Cenozoic tectonics across the Gobi Alashan Block, China［J］. Lithosphere, 8(3):199-218.
Zhang P Z, Burchfiel B C, Molnar P, et al. 1990. Late Cenozoic tectonic evolution of the Ningxia-Hui Autonomous Region, China［J］. Geological Society of America Bulletin, 102(11):1484-1498.
Zhang P Z, Burchfel B C, Molnar P, et al. 1991. Amount and style of late Cenozoic deformation in the Liupan Shan area, Ningxia Autonomous Region, China［J］. Tectonics, 10(6):1111-1129.
Zheng D W, Zhang P Z, Wan J L, et al. 2006. Rapid exhumation at ~8Ma on the Liupan Shan thrust fault from apatite fission-track thermochronology:implications for growth of the northeastern Tibetan plateau margin［J］. Earth and Planetary Science Letters, 248(1-2):198-208.
Zheng W J, Zhang H P, Zhang P Z, et al. 2013a. Late Quaternary slip rates of the thrust faults in western Hexi Corridor(Northern Qilian Shan, China)and their implications for northeastward growth of the Tibetan plateau［J］. Geosphere, 9(2):342-354.
Zheng W J, Zhang P Z, Ge W P, et al. 2013b. Late Quaternary slip rate of the South Heli Shan Fault(Northern Hexi Corridor, NW China)and its implications for northeastward growth of the Tibetan plateau［J］. Tectonics, 32(2):271-293.
Zheng W J, Zhang P Z, He W G, et al. 2013c. Transformation of displacement between strike-slip and crustal shortening in the northern margin of the Tibetan plateau:Evidence from decadal GPS measurements and late Quaternary slip rates on faults［J］. Tectonophysics, 584(6):267-280.

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