Abstract: Kuche foreland basin is located in the northern part of Tarim area.Its northern boundary is the southern margin's faults of the southern Tianshan orogenic belt.The southern one varied in different geological ages.The structural deformation and evolution of Kuche foreland basin is closely related with the development of the southern Tianshan orogenic belt, both of them developed in an oceanic basin and passive continental margin.Their structural evolution included subduction, closing down of oceanic crust, folding and thrusting in the late Paleozoic planation of the Tianshan orogenic belt and development of extensive lakes in the Mesozoic, orogeny and basing by intracontinental subduction in the Cenozoic.The evolution of Kuche foreland basin can exactly be divided into two main stages i.e. the stage of plate tectonic evolution in the Paleozoic and the stage of intracontinental tectonic evolution in the Mesozoic and Cenozoic.Kuche foreland basin can be classified as four tectonic unites: the thrust belt in the northern basin margin, Baicheng-Yanxia depression deformation belt, Tabei foreland slope belt, and Tazhong forebulge belt.The oil and gas resources are plentiful in Kuche foreland basin.Three petroleum systems can be distinguished: T_2-3k+T_3h lacustrine mudstones, T_3t+J₁₊₂ mudstones of coal measure, and T_3t+J₁₊₂ coal-formed petroleum systems.

Key words: structural characteristics, structural evolution, petroleum system, foreland basin, Kuche

摘要： 库车前陆盆地位于塔里木北部,北界为南天山南缘大断裂,南界则在不同时期不尽相同.新生代库车前陆盆地的形成与南天山造山带的发育密切相关,二者均是在早古生代洋盆及被动大陆边缘基础上发展起来的,经历了晚古生代南天山洋盆俯冲关闭及褶皱冲断、中生代天山夷平及泛湖发育、以及新生代陆内俯冲造山成盆的演化.就库车前陆盆地来说,可分为两个大的演化阶段：古生代板块构造演化阶段和中新生代陆内构造演化阶段.库车前陆盆地自北而南划分为南天山南缘逆冲断裂构造带、拜城-阳霞坳陷变形带、塔北前陆斜坡带和塔中前缘隆起带等四个构造单元.库车前陆盆地油气资源丰富,可以识别出三个油气系统,即中上三叠统湖相泥岩油气系统、上三叠统和中下侏罗统煤系泥岩油气系统、以及上三叠统和中下侏罗统煤岩油气系统.

关键词: 构造特征, 构造演化, 油气系统, 前陆盆地, 库车