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准噶尔盆地作为大型复合叠加压扭型盆地,边界被南缘、西北缘和东北缘大型褶皱带所控制,整体研究程度相对较低。通过区域地震大剖面的构造解释,进一步明确了准噶尔盆地不同边界褶皱带的发育演化时期与形变特征的差异,其主形变期具有顺时针方向旋转特征。利用编制构造发育剖面的方法近似定量估算了盆地周缘褶皱带在不同地质时期的挤压收缩量以及盆地中生代以来总的挤压收缩量,并分析了盆地周缘褶皱带形变与构造幕的关系;在此基础上探讨了褶皱带形变的地质作用对盆地构造特征、沉积旋回和油气分布的影响。
As a large-scale composite superimposed compression-compression basin, the Junggar Basin is controlled by a large fold belt along the southern, northwestern and northeastern margins, with a relatively low overall degree of research. Through the tectonic interpretation of regional large-scale seismic sections, the differences between the evolution and deformation features of different boundary fold belts in the Junggar Basin are further clarified. The main deformation phases have clockwise rotation characteristics. By means of compiling the developmental profile, the amount of compression and shrinkage of the fold belt around the basin in different geologic periods and the total amount of extrusion and shrinkage since the Mesozoic are estimated and approximated quantitatively, and the relationship between the deformation of the fold belt and the tectonic curtain in the basin margin is analyzed. Based on this, the effect of the deformation of the fold belt on the tectonic features, sedimentary cycles and hydrocarbon distribution in the basin was discussed.