中国中西部4种组合类型前陆盆地成藏研究:I.油气成藏地质条件分析

前陆盆地是中国重要的油气勘探领域。中国中西部前陆盆地从盆地结构和演化特征可以分为早衰型、改造型、新生型和叠加型等4种组合类型。分别以准西北缘前陆盆地(早衰型)、川西前陆盆地(改造型)、柴北缘冲断带(新生型)和准南前陆盆地(叠加型)为例，探讨了不同类型前陆盆地生储盖等成藏地质条件的差异，并分析了不同组合类型前陆盆地主要烃源岩的热演化过程，其中喜山晚期前陆发育对新生型和叠加型前陆盆地烃源岩演化具有明显的控制作用。

HYDROCARBON ACCUMULATION OF FOUR ASSOCIATION TYPES OF FORELAND BASINS IN CENTRAL AND WESTERN CHINA: PART Ⅰ . GEOLOGICAL CONDITIONS

Foreland basins are important areas of exploration for petroleum in China.According to the basin construction and evolution,the foreland basins in central and western China can be divided into four types of assemblages including the presenile,the reconstructed,the regenerated and the superimposed.This paper discusses the geological conditions of accumulation,such as the assemblages of source rock,reservoir and seal,in different foreland basins based on the examples of northwestern Junggar foreland basin(the presenile),western Sichuan foreland basin(the reconstructed),northern Chaidamu foreland thrust(the regenerated) and southern Junggar foreland basin(the superimposed).The thermal evolutions of main source rocks are stated in the four types of foreland basins.The foreland development in the late period of Himalayan movement has an obvious control on the thermal evolution of source rocks in the Chaidamu foreland thrust(the regenerated) and southern Junggar foreland basin(the superimposed).