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这是一篇理论探讨性的论文。松辽盆地所处的亚洲东北部地区,从古生代以来,主要经历了中生代及新生代二次板块运动。中生代的板块运动产生了安第斯山型的锡霍特——阿林弧及弧后松辽—三江盆地。新生代板块运动塑造了现今亚洲东北部大陆边缘岛弧—海沟系。松辽盆地形成时与三江盆地连在一起,均属弧后盆地。在其发展过程中,由于郯—庐断裂的北部分支伊兰—伊通断裂的平移运动,使松辽盆地与三江盆地在发展过程中,彼此逐渐错开并在扭动断裂牵引作用下,松辽盆地东侧及三江盆地西侧逐渐隆超,使其成为各自独立的盆地。因此,松辽盆地是一个与扭动断裂有关的弧后盆地,具有边形成、边扭动,边发展的特点。
This is a theoretical discussion paper. Since the Paleozoic, the northeastern Asia region of the Songliao Basin has mainly experienced the Mesozoic and Cenozoic secondary plate movements. The Mesozoic plate movement resulted in the Andean Sikhhot-Alin arc and the arc-back Songliao-Sanjiang basin. The Cenozoic plate movement shaped the arc-trenches of the marginal island in northeastern Asia today. The formation of Songliao Basin and the Sanjiang Basin together, are back arc basin. During its development, due to the translational movement of the Yilan-Yitong fault in the northern branch of the 郯-Lu fault, the Songliao Basin and the Sanjiang Basin gradually shifted from each other during the development and under the action of twisting and breaking traction, Songliao On the east side of the basin and west of the Sanjiang basin, the basin gradually becomes supercontinental, making it an independent basin. Therefore, the Songliao Basin is a back-arc basin that is related to twisting faults and has the characteristics of edge formation, twisting and edge development.