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根据重力和磁力资料分析,研究了塔里木盆地的莫霍界面和康氏界面深度分布特征及地壳上地幔的密度和磁性结构。结果表明,盆地内部莫霍界面深度为37~44km,康氏界面深度为15~38km,两界面基本同步起伏,深度分布主要有NW和NE两个优势方向。地壳上地幔构造具有与浅部地质构造尤其是基底构造基本同步的特征。盖层和结晶地壳的密度和磁性结构在垂直方向以及隆起和坳陷构造带间,都存在明显的不均一性。
Based on the analysis of gravity and magnetic data, the depth distribution of the Moho and Con interface in the Tarim Basin and the density and magnetic structure of the crust and upper mantle are studied. The results show that the depth of the Moho interface in the basin is 37 ~ 44km and the depth of the Kangs interface is 15 ~ 38km. The two interfaces are basically synchronous with ups and downs. The depth distribution mainly includes two dominant directions of NW and NE. The crust and upper mantle structure has the characteristics of being basically synchronous with the shallow geological structure, especially the basement structure. The density and magnetic structure of the caprock and the crystalline crust are markedly inhomogeneous both in the vertical direction and between the uplift and depression tectonic belts.