地震研究

大盈江断裂西南段晚第四纪活动研究^*

安晓文^1,2,常祖峰²,石静芳²

(1.中国科学技术大学地球和空间科学学院,合肥 230026; 2.云南省地震局,昆明 650224)

关键词：大盈江断裂; 晚第四纪; 左旋走滑; 6级地震

Investigation of Late Quaternary Activity along the South-western Segment of the Dayingjiang Fault

AN Xiao-wen,CHANG Zu-feng,SHI Jing-fang

(Earquake Administration of Yunnan Province,Kunming 650224,Yunnan,China)

Keywords：the Dayingjaing fault; late quaternary; left-lateral dip-slip; M_S6.0 Earthquake

备注

摘要

全文

图/表

参考文献

根据断裂地质、地貌特征和卫星影象资料,阐述了大盈江西南段晚第四纪的活动特征和运动方式。结果表明:大盈江西南段主要表现为左旋走滑运动,为晚更新世活动断裂,沿断裂历史上发生过6级左右地震。

According to geological geomorphologic characteristics and satellite photograph explanation of the south-western segment of the Dayingjiang fault,we studied the late Quaternary activity features and motion patters.The results show:The fault activity is mainly left-lateral dip-slip,the updated active time is late-Pleistocene,there was earthquake above M_S6.0 along the fault in history.

引言
1 大盈江断裂基本特征
2 大盈江断裂西南段晚第四纪活动表现
3 结论

图1 大盈江断裂及邻区地质构造图<br/>Fig.1 Tectonic map of Dayingjiang fault and its vicinity

图1 大盈江断裂及邻区地质构造图
Fig.1 Tectonic map of Dayingjiang fault and its vicinity

图2 大盈江西南段断裂展布图<br/>Fig.2 Distribution of south-western segment of Dayingjiang fault

图2 大盈江西南段断裂展布图
Fig.2 Distribution of south-western segment of Dayingjiang fault

图3 弄璋街附近断层三角面及断层卫星影像<br/>Fig.3 The triangle and satellite images of Dayingjiang fault nearby Nongzhang

图3 弄璋街附近断层三角面及断层卫星影像
Fig.3 The triangle and satellite images of Dayingjiang fault nearby Nongzhang

图4 南奔河与太平江交叉口上游断层三角面示意图<br/>Fig.4 Sketch map of Dayingjiang fault triangle faces at the cross of the Nanben river and the Taiping river

图4 南奔河与太平江交叉口上游断层三角面示意图
Fig.4 Sketch map of Dayingjiang fault triangle faces at the cross of the Nanben river and the Taiping river

图5 勐俄—曼面一带断层河流位错示意图<br/>Fig.5 Sketch map of stream dislocation in Meng'e-Manmian

图5 勐俄—曼面一带断层河流位错示意图
Fig.5 Sketch map of stream dislocation in Meng'e-Manmian

图6 断层对盆地和河流控制示意图<br/>Fig.6 Sketch map of fault influence to basins and streams

图6 断层对盆地和河流控制示意图
Fig.6 Sketch map of fault influence to basins and streams

图7 赖东断层剖面图<br/>Fig.7 Cross section of the fault at Laidong

图7 赖东断层剖面图
Fig.7 Cross section of the fault at Laidong

图8 赖东阶地位错示意图<br/>Fig.8 Terrace dislocation at Laidong

图8 赖东阶地位错示意图
Fig.8 Terrace dislocation at Laidong

图9 桑刚村小溪水平位错示意图<br/>Fig.9 Stream horizonal dislocation at Sanggang village

图9 桑刚村小溪水平位错示意图
Fig.9 Stream horizonal dislocation at Sanggang village

图10 顿列附近新、老洪积扇剖面示意图<br/>Fig.10 Cross section sketch map of new and old alluvial fan

图10 顿列附近新、老洪积扇剖面示意图
Fig.10 Cross section sketch map of new and old alluvial fan

常祖峰,张艳凤,安晓文,等.2006.热水塘断层活动性研究[J].地震研究, 29(2):147-150.
虢顺民,向宏发,徐锡伟,等.2002.滇西大盈江断裂带晚第四纪活动的初步研究[A]//活动断裂研究(2).北京:地震出版社.
李祥根.2003.中国新构造运动概论[M].北京:地震出版社.
卢海峰,马保起,于盛锷,等.2006.甘肃文县北部北东东向断裂带新构造活动特征[J].地震研究,29(2):147-155.
申旭辉,汪一鹏.2001.川滇地区最新构造变形基本特征初步研究[A].//构造与环境.北京:地震出版社.
杨景春,李有利.2001.地貌学原理[M].北京:北京大学出版社.
杨景春.1985.地貌学[M].北京:地震出版社.
Barr S M,Macdonald A S.1987.Nan River Suture Zone,Northern Thailand[J].Geology,15:907-910.
Edward A.Keller.1996.Active Tectonics[M].Prentice Hall.
Stanley A S.2002,Active Tectonics and Alluvial Rivers[M].Cambridge University Press.