Exploration and Study of Major Faults in Anshan City,Liaoning Province |
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| Authors: | Gao Changbo Zhong Yizhang Wu Mingda and Zheng Shuangcheng |
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| Institution: | Gao Changbo,Zhong Yizhang,Wu Mingda and Zheng ShuangchengSeismological Bureau of Liaoning Province,Shenyang 110031,China |
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| Abstract: | In order to provide a basis for the earthquake resistance protection zoning of Anshan City, we studied the activity of faults. In the study, the synthetic geophysical prospecting techniques were used. These techniques include the shallow artificial earthquake method, electric method, geologic radar method, etc., with shallow artificial earthquake sounding as the main means. In the meantime, the data of geophysical prospecting and borehole record of this city were collected and the methods of field investigation and sample age dating were also used in combination. The results show that there are 5 hidden or semi-hidden faults in Anshan City. Among these faults, Dashitou-Songsantai fault, Ningyuantun fault and Dayangqi fault trend NW, the middle Pleistocene Tanggangzi fault trends NE, while the early Pleistocene or Pre-Quaternary Ertaizi fault trend NW. According to the definition of active faults, none of these faults is active. This paper also discussed the cause for the formation of seriously damaged areas in Anshan City during the 1975 Haicheng M7.3 earthquake. |
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| Keywords: | Fault Geophysical prospecting Anshan City of Liaoning Province |
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