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准噶尔盆地由准噶尔地体演化而来。准噶尔地体的前寒武系结晶基底,至少形成于800Ma前。准噶尔盆地基底具有”双层结构”,局部存在强烈减薄现象,整个下古生界,准噶尔地体一直存在稳定的地体演化机制,它经历了地体与板块并存、前缘推覆-洋壳消减和地体与板块拼贴的三个阶段后演化为盆地。根据准噶尔盆地构造分层,并结合盆地地质研究的进展,将准噶尔盆地形成及演化过程划分为6个阶段:（1）地体形成阶段;（2）地体发展演化阶段;（3）地体、板块拼贴,准噶尔盆地雏形形成阶段;（4）前陆盆地阶段;（5）陆内坳陷阶段;（6）再生前陆盆地阶段。后三阶段与油气关系密切。
The Junggar Basin evolved from the Junggar terrain. Pre-Cambrian crystalline basement of the Junggar terrane, at least formed before 800Ma. The basement of the Junggar Basin has a “double-layer structure” with a strong local thinning phenomenon. The entire Lower Paleozoic and Junggar have been characterized by stable evolution of the terrane, which experienced the coexistence of terrane and plate, After the three stages of shell abatement and the collage of terrane and plate evolve into basins. According to the stratigraphic stratigraphy of Junggar Basin and the progress of basin geology research, the formation and evolution of Junggar Basin are divided into six stages: (1) the stage of terrane formation; (2) the stage of terrane evolution; (3) , Plate collage, Junggar Basin rudiment forming stage; (4) foreland basin stage; (5) intracontinental depression stage; (6) regeneration foreland basin stage. The latter three stages are closely related to oil and gas.