准噶尔地块与准噶尔盆地的主体部分大体相当。形状近似三角形,西端呈狭窄状伸向苏联,其内被巨厚的中、新生代地层覆盖。因此,坳陷的基底究属前寒武系抑或为华力西期褶皱?有待进一步研究解决。值得注意的是其周围褶皱带构造线明显的围绕准噶尔盆地展布并较为发育,其走向天山褶皱带近于东西,东准噶尔褶皱带为北西,西准噶尔褶皱带则为北东,构造线方向的变化很可能受古地块隆起的控制。外准噶尔地槽褶皱带,形成一个相当明显的 The main parts of Junggar block and Junggar Basin are roughly the same. The shape of the triangle, the narrow end of the western extension of the Soviet Union, which was thick in the Mesozoic, Cenozoic stratigraphic cover. Therefore, whether the basement of the depression belongs to the Precambrian or Waringian fold needs to be further studied and solved. It is noteworthy that the tectonic line of the surrounding fold belt is obviously distributed around the Junggar Basin and is well developed. Its trend toward the Tianshan fold belt is east-west, the East Junggar fold belt is northwest, and the west Junggar fold belt is north-east and the tectonic direction Changes are likely to be dominated by the uplift of the paleosol. External Junggar geosyncline fold belt, forming a quite obvious