伊宁盆地类型及其石油地质意义

ON THE TYPE OF THE YINING BASIN AND ITS SIGNIFICANCE OF PETROLEUM GEOLOGY

董秀芳 熊永旭

Dong Xiufang Xiong Yongxu

地矿部石油地质综合大队, 湖北 江陵 434100

Research Party of Prtroleum Geology, MGMR

伊宁复合盆地成生发展可划分为石炭纪一早二叠世、晚二叠世和新生代3个构造发展阶段,相应地先后形成了孤内盆地、孤内残余盆地和远源碰撞山间盆地3种性质各异的原型盆地。弧内盆地属典型拉张型盆地,弧内残余盆地属地幔冷却收缩沉降盆地,生油岩系均较发育;远源碰撞山间盆地属压性盆地,生油岩系不发育。前两类盆地油气前景较好。

Three stages of tectonic evolution for Yining composite basin are distinguished:Carboniferous early Permian,late Permian and Meso-Cenozoic,correspondingly three prototype basins,i.e.an intra-arc basin,an intra-arc remnant basin and intermontane basin dynamically dominated by distal collision were successively formed.The intra-arc basin is a typical extensional basin,and the intra-arc residual basin is attributed to a depressed basin resulted from the cooling shrinkage of the mantle,both with developed source rock series.The distal-collisional intermontane basin is a compressive basin,with poor developed source rocks.Therefore the former two basins have a promising prospect for oil-gas exploration

https://doi.org/10.11781/sysydz199501017