【摘要】 为查明清水河东侧断裂的产状、性质及其浅部构造特征,跨断裂开展高分辨率的浅层地震探测,获得高信噪比的浅层地震反射叠加剖面。根据浅层地震剖面结果并结合该区域地质资料,对该断裂的浅部构造特征进行分析和讨论。结果表明,清水河东侧断裂为一条走向近SN、倾向E的逆断层,其浅部为由2～3条断层组成的"Y"字形构造,并错断埋深约10～30 m的第四系沉积层,属第四纪以来的隐伏活动断裂。更多还原

【Abstract】 In order to investigate the occurrences, properties and shallow tectonic features of the east-Qingshui river fault, we complete high resolution shallow seismic profiles crossing the fault and obtain shallow seismic reflection stacked profiles which have higher signal-noise ratio. According to these results, and combined with geological data, we analyze and discuss the shallow structures features of the fault. The results show that east-Qingshui river fault is a near SN trending and E dipping reverse fault. In the shallow position the east-Qingshui river, the fault shows "Y" structure which consists of 2-3 fault. The fault disrupts 10～20 m Quaternary strata in the shallow part, therefore it buried active faults in the Quaternary period.更多还原