| 第四纪水泉尖山-崛峿山南麓断裂带活动的迁移及其机制 |
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| 引用本文： | 才树华,张杰.第四纪水泉尖山-崛峿山南麓断裂带活动的迁移及其机制[J].西北地震学报,1999,21(2):194-202. |
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| 作者姓名： | 才树华 张杰 |
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| 作者单位： | 中国地震局兰州地震研究所 |
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| 基金项目： | 中国地震局兰州地震研究所论著编号:LC1999016 |
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| 摘 要： | 位于甘肃靖远地区的水泉尖山－崛Ｗｕ山南麓断裂带早第四纪前为走向逆断层，第四纪中期出现左旋走滑迹象。研究结果表明，水泉尖山－崛Ｗｕ山南麓断裂带断裂活动的横向迁移与海原活动断裂带的形成和强烈活动有着密切的关系。
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| 关 键 词： | 甘肃 第四纪 断层活动 迁移机制 地震活动 |
| 收稿时间： | 1998/8/18 0:00:00 |
ACTIVITY MIGRATION OF THE QUATERNARY SHUIQUANJIANSHAN-JUEWUSHAN SOUTR PIEDMONT FAULT ZONE AND ITS MECHANISM IN JINGYUAN, GANSU |
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| CAI Shu-hua and ZHANG Jie.ACTIVITY MIGRATION OF THE QUATERNARY SHUIQUANJIANSHAN-JUEWUSHAN SOUTR PIEDMONT FAULT ZONE AND ITS MECHANISM IN JINGYUAN, GANSU[J].Northwestern Seismological Journal,1999,21(2):194-202. |
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| Authors: | CAI Shu-hua and ZHANG Jie |
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| Institution: | Lanzhou Institute of Seismology, CSB, Lanzhou 730000, China and Lanzhou Institute of Seismology, CSB, Lanzhou 730000, China |
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| Abstract: | The Shuiquanjianshan-Juewushan south piedmont fault zone in Jingyuan region, Gansu Province was a strike reverse fault before early Quaternary and became sinistral strike-slip fault in middle Quaternary. As the strong activity occurred along the Haiyuan fault zone, the activities of the Shuiquanjianshan-Juewushan fault zone, other active faults before late Quaternary and com-pressive settling basin within the region were stopped.Obviously, activity of the Quaternary fault was characterized by lateral migration. It is considered that the migration mainly resulted from change of principal stress orientation of regional stress field and characteristic structure boundary condition. |
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| Keywords: | Gansu Quaternary Faulting Migration mechanism |
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