摘要
文章分析了中国东北地区中新生代含油气盆地构造,研究其形成机制、认为区内的中部松辽盆地及其以西的二连盆地区於中晚侏罗世与早白垩世早期受深部岩石圈活化伸展作用产生大范围的断陷,早白垩世晚期至新生代转为坳陷。区内东部侏罗-白垩纪的局部断陷受区域断裂活动控制,第三纪的断陷活动又趋於加强。据该区中新生代含油气盆地形成演化规律,松辽盆地及其以西的海拉尔、二连诸盆地今后重点勘探应是断陷沉积层内的侏罗-白垩系,东部地区盆地群的勘探应着眼於面积较大的断陷盆地内的下第三系。
We studied the structure and Mechanism of Meso-Cenozoic oil-gas bearing basins in North-East China. During Middle and late Jurassic and early stage of Early Cretacouse, Songliao Basin in the central part and Enlian Basin in the weatern area wree fault-depressed at large scale due to deep lithosphere extension. During late stage of Early Cretaceous to Cenozoic were Changed into many depsessions. During the Jurassic-Cretaceous times, the local faulted-depsessions in the east were controlled by regional faulting, and in Tertiary the faulted-depressions become intensified. Based on mentioned above, in the future the exploration target in Songliao Basin and Hailaer and Erluan basins in the west should focus on Jurassic- Cretaceous strata in fault-depressing sediomentary layers while in the east on Lower Tertiary in fault-depessed basins with relative large areas.
