摘要
根据北祁连山东段活动断裂带1∶5万地质填图资料,系统分析了断裂带的几何学特征、位移分布、滑动速率、古地震及历史地震活动在时空上的非均匀性特征,研究了断裂带的破裂分段性.认为,北祁连山东段活动断裂带可以划分为老虎山断裂段和毛毛山-金强河断裂段两个一级破裂段,并且还可以分别进一步划分为老虎山东、西断裂段和毛毛山断裂段、金强河断裂段等二级破裂段.
In this paper,according to the 1:50 000 geological mapping information in east segment of the northern Qilianshan active fault zone,authors systematically analysed the geometry,inhomo- geneity features of the displacement distribution,slip rates,palaeoearthquakes and historical earthquakes in time and space along the fault zone,then summarized the rupture segmentation,It is considered that the east segment of the active fault zone can be devided into Laohushan and Maomaoshan-Jinqianghe first class rupture segments.The Laohushan fault can be devided into east and west segments,the Maomaoshan-Jinqianghe fault can devided into the Maomaoshan and Jinqianghe second class segments.
出处
《西北地震学报》
CSCD
1998年第4期27-34,共8页
Northwestern Seismological Journal
基金
国家地震局合同项目(85-02-01-3-4)
地震科学联合基金资助课题(9500020)
关键词
北祁连山
断裂带
地震活动性
古地震
分段
Northern Qilianshan fault zone
Seismic activity
Palaeoearthquake
Segmentation
