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中、新生代华北及东北经历了一系列裂陷事件,使大陆表层开裂,形成各种类型的陆内伸展构造。其中最大的是华北平原和松辽盆地两个油区,面积分别为20万和26万平方公里。它们反映了与消减作用相连系的挤压变形和岩浆作用之后,中、新生代时期的地壳伸展作用。两个含油盆地既有共性又各有其特性。松辽盆地的伸展是在钙碱性火山岩活动期,主要形成于白垩纪。而华北平原持续到第三纪,至今壳内地震仍在活动。这些大盆地的活动是影响岩石圈构造和变形机制的灵敏指示剂。因此综合两个含油盆地的地质及地球物理特征,将有助于理解这些大型构造与深部过程及大陆岩石圈动力学之间的联系。
In the Mesozoic and Cenozoic North China and Northeast China experienced a series of rifting events, cracking the surface of the mainland and forming various types of intracontinental extensional structures. One of the largest is the North China Plain and the Songliao Basin two oil areas, covering an area of 200,000 and 260,000 square kilometers. They reflect crustal extension in the Meso-Cenozoic after crustal deformation and magmatism associated with depletion. The two oil basins have both commonality and their own characteristics. The extension of the Songliao Basin is active during calc-alkaline volcanic rocks and mainly occurs in the Cretaceous. The North China Plain continued into the Tertiary, so far the earthquakes are still active. The activity of these large basins is a sensitive indicator of lithospheric structure and deformation mechanisms. Combining the geologic and geophysical characteristics of the two oil-bearing basins will therefore help to understand the connection between these large structures and deep processes and continental lithospheric dynamics.