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燕山运动铸造了我国东部中新生代大地构造格局,形成了北北东向的大型隆起带与大型坳陷带,即李四光先生所称的“新华夏构造体系”。这种大型坳、隆相间是我国东部中新生代大地构造基本特征。在大型隆起带与坳陷带内部形成了一系列大小不等的构造盆地。松辽盆地就是产生在大型坳陷带内的一个坳陷区。它的形成、发育和演变的历史及其特征,无疑与我国东部一系列盆地的形成与发育是相似的。下面仅就盆地形成、发育和演变的特点讨论几个问题。
The Yanshan movement molded the Mesozoic-Cenozoic tectonic framework in the eastern part of China, forming a large north-northeast uplift belt and a large-scale depression belt, which is what Mr. Li Siguang called the “Neo-Huaxia Tectonic System.” This large Au, Long phase is the basic characteristics of the Meso-Cenozoic tectonics in the eastern part of China. A series of structural basins with different sizes were formed in the interior of large uplift zone and depression zone. The Songliao Basin is a depression that occurs in a large depression. The history and characteristics of its formation, development and evolution are undoubtedly similar to the formation and development of a series of basins in eastern China. In the following, we discuss only a few issues regarding the characteristics of basin formation, development and evolution.