大庆探区外围盆地中、新生代地层对比及四大勘探层系

大庆外围盆地的区域对比与组合规律研究,对于揭示东北中、新生代盆地演化规律和拓展油气开发思路具有重要意义。利用岩性特征、古生物化石组合、同位素等资料,对大庆探区外围盆地中、新生代地层进行了对比,总结了地层发育的宏观规律,提出了中—上侏罗统、下白垩统、上白垩统和古近系四大勘探层系,为大庆探区外围盆地进一步的沉积、构造演化及石油地质研究提供了可靠的依据。

Stratigraphic correlation of the Mesozoic and Cenozoic in the outer basins of the Daqing exploration area

Regional correlation and study of the assemblage characteristics in the outer basins of the Daqing exploration area have great significance for revealing the characteristics of Meso-Cenozoic basin evolution in Northeast China and widening one's ideas of petroleum development. By using the lithological characteristics, fossil assemblages and isotopic data, Meso-Cenozoic strata in the outer basins of the Daqing exploration area are correlated and the microscopic characteristics of the stratigraphic development are summarized. The authors propose four major exploration layers in the basins, i.e. the Mid-Upper Jurassic, Lower Cretaceous, Upper Cretaceous and Paleogene. This study provides a reliable basis for the further study of the sedimentation, tectonic evolution and petroleum geology in the outer basins of Daqing exploration area.