盆-山耦合关系与成烃作用——以准噶尔西北地区为例

通过大量地质、地球物理和地球化学资料论证，笔者认为准噶尔盆地西北前陆坳陷与西准噶尔造山带之间在成因上具有耦合关系，即准噶尔盆地西北前陆拗陷的形成、演化与西准噶尔造山带的上隆、推覆之间存在内在成因联系。准噶尔西北地区的基底为早中古生代洋壳物质，准噶尔盆地西北地区的中泥盆世为残余洋盆，晚泥盆世一晚石炭世为弧前残余洋盆，二叠纪为前陆盆地。根据准噶尔盆地西北地区的前陆坳陷与西准噶尔造山带在盆—山转换过程中地质流体的地球化学特征，认为现克拉玛依油区油气的形成演化与盆—山转换过程中各种地质作用，特别是地质流体的作用具有成因相关性。

The basin-range coupling and hydrocarbon generation: An example from northwestern Junggar Basin

A direct genetic affiliation was speculated upon the formation and evolution of the foreland depression in the northwestern part of the Junggar Basin and the uplifting and thrusting of the West Junggar orogenic zone on the basis of geological, geophysical and geochemical data. The northwestern part of the Junggar Basin was developed on the ground of the Early and Middle Palaeozoic oceanic crust. This part of the basin was a residual oceanic basin during the Middle Devonian , a fore arc residual oceanic basin during the Late Devonian to the Late Carboniferous, and a foreland basin during the Permian. The study of the geochemistry of the geofluids has disclosed that the generation, migration and enrichment of oil and gas in the Karamay oil field have a genetic link with the various geological processes, especially those associated with the geofluids during the basin range transition in the studied regions.