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亚洲大陆东部边缘有一系列边缘海(marginal sea),南海是其中的一个。这些边缘海具有复杂的构造和独特的成因。它们的起源和演化,近十多年来,随着板块构造学说的兴起才逐渐被揭示出来。板块构造学说作为一种地质科学理论,虽然还需要进一步研究和完善,但是,目前它已经得到极为丰富而且越来越多的地球物理、地震、地质、深海钻探等方面证据的支持。由于板块构造的理论研究和实践,使我们对地壳构造格局了解得比较详尽,对大陆边缘构造的演化也有了比较合理的解释。从而对石油和天然气聚集规律的认识和油、气勘探工作起了良好的促进作用,尤其是海洋石油勘探,效果更为明显。
There is a series of marginal sea on the eastern edge of the Asian continent, one of which is the South China Sea. These marginal seas have complex structures and unique causes. Their origins and evolution have gradually been revealed with the rise of plate tectonics in the past decade or so. Plate tectonics theory, as a kind of geoscience theory, needs further research and improvement. However, it has been supported by a very rich and increasing evidence of geophysics, earthquake, geology and deep-sea drilling. Due to the theoretical research and practice of plate tectonics, we know more about the crustal tectonics and have a more reasonable explanation of the evolution of continental margin tectonics. Thus, the understanding of laws of oil and gas accumulation and oil and gas exploration play a good role in promoting, especially offshore oil exploration, the effect is more obvious.