【摘要】 塔里木盆地存在4个滑脱系统、多套滑脱层、多个主滑面和次滑面。浅层次滑脱构造以中、新生代地层发生褶皱-冲断为特征;中层次滑脱表现为古生代地层的逆冲推覆、滑脱褶皱和牵引背斜;深层次滑脱为发育在基底岩系中的韧性剪切带。塔北、塔中和塔南隆起,发育有中、深层次滑脱构造,它们是寻找大型油气田的主要油气聚集带。库车、西南和东南坳陷发育浅层次滑脱构造,是寻找中、小型油气田的有利构造带。更多还原

【Abstract】 Four detachmen systems have been found in the Tarim Basin. They are made up of the Proterozoic, Paleozoic, Mesozoic-Eogene and Neogene-Quaternary, respectively. The shallow-level detachment structures are characterized by fold-thrust belts in Meso-Cenozoic strata. The midlevel structures are marked by nappes, décollement folds and drag anticlines in Paleozoic Strata. The deep-level structures are represented by ductile shear belts developing in the basement. The main features of the detachments in the basin are thrusting, compressional folding and shortening, which gave rise to a series of trap types associated with detachments. Middeep level detachment structures mainly occur in the Northern, Central and Southern Uplifts, which are major hydrocarbon accumulation belts for large-scale oil-gas fields. Shallow-level detachment structures mainly exist in the Kuche, Southwestern and Southeastern Depressions, which are favourable belts for medium-and small-sized oil-gas fields.更多还原