| 摘 要： | This paper discusses the characteristics of the regional geological structure of the Bohai Sea, the Huanghai Sea, the East China Sea and the South China Sea on the basis of the data achieved by aeromagnetic surveys over the past years.The Huanghai Sea is an intercontinental sea which is tectenically similar, and can be connected, to the adjacent continental parts. It is a submerged part of the continent. Aeromagnetic survey shows that the deep structures in this area strike E-W, belonging to the Pal-Asiatic Tectonic Domain. The South China Sea is a typical marginal sea of the Western Pacific Ocean, resulting from the fracturing of the continental margin and the sea floor spreading from the Mid-Oligocene to the Miocene.
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