| 六盘山东麓活动逆断裂构造带晚第四纪以来的活动特征 |
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| 引用本文： | 向宏发,池田安隆.六盘山东麓活动逆断裂构造带晚第四纪以来的活动特征[J].地震地质,1998,20(4):34-327. |
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| 作者姓名： | 向宏发 池田安隆 |
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| 作者单位： | 中国地震局地质研究所 |
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| 摘 要： | 新的野外调查研究结果表明，六盘山东麓断裂是一条第四纪以来的活动逆断裂构造带。根据断裂走向、活动时代及活动性质的变化，可把该断裂带分为北、中、南３段。北段以左旋走滑运动为主，中、南段以倾向逆冲运动为特征。活动时代北新南老，水平位错北强南弱。晚第四纪以来断裂活动特征的这种变化与西华山 六盘山条形地块东向滑移受阻及断裂走向的改变有关
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| 关 键 词： | 活动断裂 第四纪 六盘山 |
ACTIVE FEATURES OF THE EASTERN LIUPANSHAN PIEDMONT REVERSE FAULT ZONE SINCE LATE QUATERNARY |
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| Xiang Hongfa,Guo Shunmin,Zhang Bingliang,Zhang Wanxia.ACTIVE FEATURES OF THE EASTERN LIUPANSHAN PIEDMONT REVERSE FAULT ZONE SINCE LATE QUATERNARY[J].Seismology and Geology,1998,20(4):34-327. |
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| Authors: | Xiang Hongfa Guo Shunmin Zhang Bingliang Zhang Wanxia |
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| Abstract: | New results of field investigations show that the eastern Liupanshan piedmond fault is an active reverse fault zone since late Quaternary. This fault zone can be divided into north, middle, and south three segments in the light of the changes of its strike, active ages and active natures. The north segment is dominated by left lateral strike slip, while the middle and the south segments are characterized by thrust movement. The active age of the north segment is youger than the south and larger horizontal dislocations occurred on the north. Such changes of fault activities since late Quaterary are associated with obstruction for the eastward slide of the Xihuashan Liupanshan block as well as the variation of the fault strike. |
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| Keywords: | Active fault Quaternary Liupanshan |
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