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拉脊山断裂带在遥感影像上具有明显的线性构造特征,由拉脊山北缘断裂带和拉脊山南缘断裂带向北东凸出的弧形挤压逆冲断裂带构成,成为北侧的西宁—民和盆地、南侧的循化—化隆盆地和东侧的临夏盆地等多个晚新生代断陷盆地的边界,拉脊山北缘断裂带全长230km,由数段弧状不连续的断裂带组成。拉脊山南缘断裂带全长220km,由5段不连续宽缓波状断裂带组成,其左旋活动形成了拉张型的山间盆地——千户盆地,左旋水平位移180~640m不等。历史上沿拉脊山南、北两侧发生过20余次5级左右中等破坏性地震,这与遥感解译该断裂带的几何特征相一致。
The Lajishan fault zone has obvious linear tectonic features on the remote sensing images. It is formed by the arc-shaped thrust and compression thrust belts protruding to the north east from the fault zone on the northern edge of Lajishan and the southern margin of Lajishan, - the Minhe basin, the Xunhua-Hualong basin in the south and the Linxia Basin in the east. The fault zone in the northern margin of Lajishan Mountain is 230km long and consists of several sections of arc-shaped discontinuous faults Belt composition. The southern margin of the Lajishan fault zone is 220km in length and consists of 5 discontinuous and broadly-spreading wavy rifts. The left-lateral rotation formed an extensional mountainous basin - a thousand-basin with a left-lateral displacement of 180-640m. In history, more than 20 moderate-grade 5-magnitude moderate-to-moderate destructive earthquakes occurred along the southern and northern parts of Lajishan, which are consistent with the interpretation of the geometric characteristics of the fault zone by remote sensing.