PALAEO-EARTHQUAKE STUDY ON THE NORTHERN YUMUSHAN ACTIVE FAULT

doi:10.3969/j.issn.0253-4967.2011.02.008

SEISMOLOGY AND GEOLOGY ›› 2011, Vol. 33 ›› Issue (2): 347-355.DOI: 10.3969/j.issn.0253-4967.2011.02.008

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PALAEO-EARTHQUAKE STUDY ON THE NORTHERN YUMUSHAN ACTIVE FAULT

JIN Qing^1,2, HE Wen-gui^1,2, SHI Zhi-gang^1,2, YUAN Dao-yang^1,2

1. Lanzhou Institute of Seismology,China Earthquake Administration,Lanzhou 730000,China;
2. Lanzhou Base of Institute of Earthquake Prediction,China Earthquake Administration,Lanzhou 730000, Chian

Received:2011-02-27 Revised:2011-05-13 Online:2011-06-29 Published:2011-12-17

榆木山北缘断裂古地震特征研究

金卿^1,2, 何文贵^1,2, 史志刚^1,2, 袁道阳^1,2

1. 中国地震局兰州地震研究所, 兰州 730000;
2. 中国地震局地震预测研究所兰州科技创新基地, 兰州 730000

作者简介:金卿,女,1984年生,2006年毕业于中国石油大学(华东)资源勘查工程专业,现在中国地震局兰州地震研究所攻读构造地质学硕士学位,主要从事活动构造方面的研究工作。E-mail: jinqing_1219@163.com。
基金资助:
国家自然科学基金(40872132)和中国地震局中国大陆7级以上大震危险区预测项目共同资助

Abstract

Abstract:

The northern Yumushan Fault located on the northern flank of Qilian fold system is an active fault in Holocene.The fault is about 60km long,trending NWW.It is a trust fault with left-lateral strike-slip component.The activity of the fault produced a series of scarps along the mountain front.The fault zone is divided into three segments,and the middle part is the most active.In this paper,palaeo-earthquake events on the fault are studied.With the study of trench profiles,two palaeo-earthquake events are determined.Event I occurred at 4.066±0.086ka BP,and event II is between 6.852±0.102ka BP and 6.107±0.082ka BP.The last palaeo-earthquake event on this fault occurred in 4.066±0.086ka BP. So,the northern Yumushan Fault is not the seismogenic fault of the M 7 1/2 Biaoshi earthquake of 180 AD.The elapse time from the latest event has been 4000yr,so the possibility of generating destructive earthquake in future should be recognized sufficiently.

Key words: Northern Yumushan Fault, palaeo-earthquake, Hexi Corridor, the M 7 1/2 Biaoshi earthquake in 180 AD

摘要：

榆木山北缘断裂位于祁连山主体山系以北的榆木山北部边缘。断裂活动形成一系列沿山前发育的断层陡坎。通过探槽剖面对发生在该断裂带上的古地震事件进行了分析,大致可以确定全新世以来的2次古地震事件。事件Ⅰ的年代为距今(4.066±0.086)ka; 事件Ⅱ为距今(6.852±0.102)ka至(6.107±0.082)ka之间。该断裂的最后一次古地震事件发生在距今(4.066±0.086)ka,并非公元180年表氏7 1/2 级地震的发震断裂。

关键词: 榆木山北缘断裂, 古地震, 河西走廊, 公元180年表氏7, 1/2, 级地震

CLC Number:

P315.2

JIN Qing, HE Wen-gui, SHI Zhi-gang, YUAN Dao-yang. PALAEO-EARTHQUAKE STUDY ON THE NORTHERN YUMUSHAN ACTIVE FAULT[J]. SEISMOLOGY AND GEOLOGY, 2011, 33(2): 347-355.

金卿, 何文贵, 史志刚, 袁道阳. 榆木山北缘断裂古地震特征研究[J]. 地震地质, 2011, 33(2): 347-355.

References

边庆凯,张培震,苏向洲.2001.榆木山北缘断裂的构造地貌特征与断层活动性［J］.华北地震科学,19(3): 41-49.
BIAN Qing-kai,ZHANG Pei-zhen,SU Xiang-zhou.2001.The tectonic topography feature of the faults in north Yumushan Mountain and its faulting activity ［J］.North China Earthquake Sciences,19(3): 41-49(in Chinese).
陈柏林,王春宇,宫红良,等.2007.关于河西走廊盆地榆木山北缘断裂晚第四纪活动特征的新认识［J］.地质通报,26(8): 976-983.
CHEN Bo-lin,WANG Chun-yu,GONG Hong-liang,et al.2007.A new understanding of the characteristics of Late Quaternary activity of the northern Yumushan marginal fault in the Hexi corridor,northwestern China ［J］.Geological Bulletin of China,26(8): 976-983(in Chinese).
虢顺民,陈志泰,向光中,等.1991.甘肃高台榆木山地区晚新生代活动断裂和断层陡坎 .见: 国家地震局地质研究所编.现代地壳运动研究(5).北京:地震出版社.146-153.
GUO Shun-min,CHEN Zhi-tai,XIANG Guang-zhong,et al.1991.Late Cenozoic active faults and fault scarps in the Yumushan area,Gaotai,Gansu,China .In: Institute of Geology,SSB(ed).Modern Crustal Movement(5).Seismological Press,Beijing.146-153(in Chinese).
国家地震局地质研究所,国家地震局兰州地震研究所.1993.祁连山-河西走廊活动断裂系［M］.北京: 地震出版社.88-91,193-197.
Institute of Geology State Seismogical Bureau and Lanzhou Institute of Seismology of State Seismogical Bureau.1993.The Qilian Mountains-Hexi Corridor Active Fault System ［M］.Seismological Press,Beijing.88-91,193-197(in Chinese).
李玉龙,邢成起.1988.河西走廊地质构造基本特征以及榆木山北麓与黑河口上龙王活断层研究［J］.西北地震学报,10(2): 35-47.
LI Yu-long,XING Cheng-qi.1988.Research on the fundamental characteristics of the geological structures of the Hexi Corridor and the active faults of the northern and eastern flank of the Yumushan Mountain ［J］.Northwestern Seismological Journal,10(2): 35-47(in Chinese).
郑文俊.2009.河西走廊及其邻区活动构造图像及构造变形模式 : .北京: 中国地震局地质研究所.9-140.
ZHENG Wen-jun.2009.Geometric pattern and active tectonics of the Hexi Corridor and its adjacent regions .Ph D Thesis.Institute of Geology,China Earthquake Administration,Beijing.9-140(in Chinese).
郑文俊,张培震,袁道阳,等.2009.甘肃高台合黎山南缘发现地震地表破裂带［J］.地震地质,31(2): 247-255.
ZHENG Wen-jun,ZHANG Pei-zhen,YUAN Dao-yang,et al.2009.Discovery of surface rupture zone on the south of Helishan in Gaotai,Gansu Province ［J］.Seismology and Geology,31(2): 247-255(in Chinese).
Tapponnier P,Meyer B,Avouac J P,et al.1990.Active thrusting and folding in the Qilian Shan,and decoupling between upper crust and mantle in northeastern Tibet ［J］.Earth and Planetary Science Letters,97: 382-403.

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PALAEO-EARTHQUAKE STUDY ON THE NORTHERN YUMUSHAN ACTIVE FAULT

榆木山北缘断裂古地震特征研究

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