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本文主要根据历年来在中国附近海域进行航空磁测所得资料,探讨了渤海、黄海、东海及南海地质构造特征。指出渤海拗陷是产生在华北地块前震旦系刚硬的结晶基底之上的新生代裂陷式盆地。黄海是相邻陆区地质构造的沉没部分。东海深部构造呈近近东西向,属古亚洲域构造。南海属太平洋西缘典型的边缘海之一,是渐新世以来大陆边缘破裂、海底局部扩张下形成的。
This paper mainly based on the data obtained from aerial magnetometry in the sea near China over the years, discusses the geological tectonics features in the Bohai Sea, the Yellow Sea, the East China Sea and the South China Sea. It is pointed out that the Bohai Sea depression is a Cenozoic rifting basin that developed above the rigidly crystalline Sinian system before the North China block. The Yellow Sea is the sinking part of the geological structure of the adjacent land area. The deep structure of the East China Sea is near east-west, belonging to the ancient Asia domain structure. The South China Sea is one of the typical marginal seas in the western margin of the Pacific Ocean, which was formed by the rupture of the continental margin and the partial expansion of the seafloor since the Oligoceses.