【摘要】 从地形地貌特征、重磁地球物理场、深部构造与断裂构造以及地震活动、震源机制等多方面论述北东东向构造是南海北缘的主要活动构造。对于长期以来认为新华夏系北东向构造是该区主要活动构造的观点来说，这是一种新的学术思想。更多还原

【Abstract】 The studies on topographical and geomorphic characteristics, geophysical field as gravity and geomagnetism, deep structure, fracture structure,seismicities, and focal mechanism ect, show that N-EE tectonic is a main active structure.It is a new scientific idea different from the recognizes proposed long since that the neocathaysian N-E direction structure is the main active tectonic.更多还原