上海两条隐伏第四纪断裂的研究

以浅层地震勘探为主要方法 ,研究了上海两条主要断裂 (太仓 -奉贤断裂和枫泾 -川沙断裂 )的第四纪活动性。结果表明 ,断裂的最新活动一般在早更新世 -中更新世 ,个别区段的活动可延续至晚更新世

RESEARCH ON TWO BURIED QUATERNARY FAULTS IN SHANGHAI

In this paper, the Quarternary activity of two main faults in Shanghai has been studied by means of shallow seismic prospecting. The nine seismic reflection profiles crossing the Fengjing-Chuansha Fault have shown that the fault can be divided into three segments. The southwestern segment is a middle Pleistocene active fault. The middle segment is composed of two normal faults which make up a horst. The northeastern segment displays only the northern branch fault. The latter two segments were active durin