图2  天祝-古浪5.4级地震区域地质构造及历史地震分布

断裂名称：①冷龙岭断裂；②哈溪-大靖断裂；③金强河断裂；④老虎山-毛毛山断裂；⑤海原断裂；

          ⑥天景山断裂；⑦龙首山北缘断裂；⑧牛首山断裂；⑨拉脊山北缘断裂；⑩皇城-双塔断裂

Fig.2　Sketch of geological of the M_S5.4 Tianzhu-Gulang earthquake area and

       distribution of historical earthquakes