摘要
通过地震剖面、可控源异常体解译、野外露头剖面勘察以及施工钻孔和连孔剖面等资料,首次详细证实了大路—姚桥断裂具新构造运动特征,根据邻区测年结果及中晚更新世沉积的下蜀组老黄土,推断出断层的活动时间为第四纪中更新世早期和中更新世以前。新构造运动致使中更新世以来断层两侧沉积了完全不同的岩相特征,形成了2套不同的沉积体系。新构造运动的发现对镇江市的规划和建设以及地质灾害的预防具有重要的指导作用,对苏锡常地裂缝的研究具有一定的指导意义。
This work for the first time confirmed in details the Neotectonic movement features of the Dalu-Yaoqiao Fault in Zhenjiang of Jiangsu Province,with the analysis of seismic profiles,interpretation of controlled-source anomaly bodies,field outcrop profiles,construction drill holes and joint hole profiles. The dating ages in the adjacent areas and the Middle-Late Pleistocene Xiashu Formation old loess suggest that the fault was active in the early stage of the Middle Pleistocene and before the Middle Pleistocene. The Neotectonic movements resulted in completely different lithologies on both sides of the fault,and formed two sets of sedimentary systems. The discovery of the Neotectonic movements has great guiding significance for the planning and construction of Zhenjiang City and the prevention of geological hazards,and is also important for the study of ground fissures in the Suzhou-Wuxi-Changzhou area.
出处
《地质学刊》
CAS
2016年第2期220-227,共8页
Journal of Geology
基金
中国地质调查局项目"长江三角洲三维深部地质调查典型区:镇江城市地质调查"(1212011220252)
关键词
新构造运动
第四系中更新世之前
可控源异常体
沉积体系差异
大路—姚桥断裂
江苏镇江
Neotectonic movement
before the Middle Pleistocene in Quaternary
controlled-source anomaly body
difference of sedimentary system
Dalu-Yaoqiao Fault
Zhenjiang in Jiangsu Province
