陇西旋卷构造及其与地震的关系

来源 :西北地震学报 | 被引量 : 0次 | 上传用户:dengzk
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文本详细叙述了陇西旋卷构造的展布特征,认为陇西旋卷构造展布在青藏地块、阿拉善地块和鄂尔多斯地块之间,其整体向固原、宝鸡一带收敛,向西北方向撒开,主要旋回面两侧相对作反时针扭动,总的可以划分为六盘山—南、西华山—毛毛山、香山、炭山—窑山—烟筒山、大、小罗山—牛首山和青龙山五个旋回褶带。该构造在卫星照片上有明显的显示,现今仍有强烈活动,对7级以上地震有明显的控制作用,並有地震自外旋带向内旋带迁移,震级逐渐增大的特点。本文认为陇西旋卷构造的形成是受青藏地块和鄂尔多斯地块的活动的影响所至。 The text describes the distribution characteristics of the Longxi spiral volcanic structure in detail. It is believed that the Longxi spiral volcanic structure spreads between the Qinghai-Tibet block, the Alashan block and the Ordos block, and converges to the Guyuan and Baoji areas as a whole, spreading to the northwest , The opposite side of the main gyration opposite to counterclockwise twist, the total can be divided into Liupanshan - South, West Huashan - Mao Mao Shan, Xiangshan, Carbon Mountain - kiln Hill - Chrysanthemum Hill, Big, Little Luoshan - Niushou Hill and Qinglongshan Five swirling pleats. This structure is obviously shown on the satellite photos. There is still a strong activity nowadays, which obviously controls the earthquakes above MS7.0. The earthquake also migrates from the outer spinodal to the inner spinodal and the magnitude increases gradually. This paper argues that the formation of Longxi spiral structure is affected by the activities of the Qinghai-Tibet block and the Ordos block.
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