【摘要】 前人对中国大陆东部新构造期 (N—Q)活动的北东向断裂 (带 )已有很多研究。笔者根据地震构造、新构造和火山活动等资料并结合Pn波速结构研究结果 ,分析了该区新构造期的北西向活动断裂 ,初步得出 :北西向断裂具有成带性 ,可分 7条北西向断裂带 ;它们有鲜明的新生性 ;均为地壳构造带 ;与北东向断裂带呈共轭关系 ,是在先存构造基础上于新构造应力场作用下正在发育的一套地壳共轭剪切破裂系统。更多还原

【Abstract】 There have been numerous studies on the NE trending faults (zones) of the eastern Chinese continent since neotectonic time(N—Q). We have an analysis of the NW trending active faults of this region since neotectonic time on the basis of data of seismotectonics, neotectonics, volcanoes and the distribution of P_n Velocity. It is suggested that these faults are characterized by zone shape. They can be subdivided into seven active fault zones of NW strike. They have a clear nascent feature and are attributed to crustal structural zones. The NW and NE trending fault zones shape a conjugate pattern in this region, which represents a developing conjugate shear fracture system in the crust under the stress field since neotectonic time.更多还原