【摘要】 本文对泉州市区域地壳结构、地质构造、构造应力场和地震活动性进行了综合分析。结果表明,泉州市在第四纪中更新世之前位于环太平洋中、新生代构造—岩浆活动带中,地壳运动频繁而又强烈,地质构造复杂;现代处于菲律宾海板块对欧亚板块挤压形成的"台湾动力触角"影响区,但区内的断裂不具全新世活动性,新构造运动不强烈,有史以来未见≥5.0级地震记载,属于地壳相对稳定区,未来遭遇6.0级地震的危险性不大,其地震破坏性影响主要来自周边孕震区,特别是东部海域,与"台湾动力触角"的作用和滨海断裂带的活动有关。更多还原

【Abstract】 Based on the previous geological data,the author made a comprehensive analysis of the regional crustal structures,regional tectonics,neotectonic movement,regional tectonic stress field and regional seismic activity in the downtown of Quanzhou City.The results show that before the middle Pleistocene epoch of Quaternary the downtown of Quanzhou City was situated at the Mesozoic and Cenozoic tectonic-magmatic activity belt of the circum-Pacific belt,where the crustal movement was frequent and intense and the regional geological structure was complicated.At the present time,it is situated in the influence area of "Taiwan dynamic tentacle" formed by compression of the Philippines sea plate against the Eurasian plate.In the studied area the fractures are not active,the neotectonic movement is not intense and there are no records of earthquakes with seismicity ≥5.0 in throughout history of Quanzhou City.Therefore,the city belongs to a relatively stabilized zone of the crust.In the future it is impossible to suffer the earthquake with seismicity of 6.0,and the influence of earthquake damage will mainly come from the seismogenic zones of its peripheral areas,especially the eastern sea area,which is inferred to be related with the effect of "Taiwan dynamics tentacle" and the movement of offshore fracture zones.更多还原