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以柴达木盆地北缘地区为例,探讨了构造运动学过程与油气藏形成的关系。研究认为柴达木盆地北缘地区中新生代板内构造体制下的盆—山耦合过程对油气藏的形成具有明显的控制作用,燕山期—喜马拉雅初期在挤压性应力场的作用下整体抬升,构造运动学过程主要以断裂来调整各个区域的应力平衡为主,由于构造位置和自身性质的差异,各个断块的隆升速度也存在差异,相对隆升较慢的断块区,逐渐发育形成压陷型断块坳陷。喜马拉雅中期构造运动使盆地周边褶皱断裂山系隆升并向盆地冲断推覆,在盆地新生代沉积层系中形成压性或压扭性褶皱和断层,为油气的运聚提供了十分有利的条件。
Taking the northern margin of Qaidam Basin as an example, the relationship between tectonic kinematics and the formation of oil and gas reservoirs was discussed. The study suggests that the basin-mountain coupling process under Mesozoic-Cenozoic intraplate tectonics in the northern margin of the Qaidam Basin has significant control over the formation of oil and gas reservoirs. In the early Yanshanian-Himalayan period, the basin was uplifted under compressive stress field The tectono-kinetic process is mainly based on the fracture to adjust the stress balance of each region. Due to the difference of structural position and self-nature, the uplift velocities of various fault blocks are also different, and the relatively uplifted fault block areas develop gradually Formed depression type fault block depression. The mid-Himalayan tectonism uplifted and folded the fold-fractured mountains around the basin into thrust and thrust nappe, forming compressive or crushed folds and faults in the Cenozoic sedimentary system of the basin, which provided very favorable conditions for the migration and accumulation of oil and gas .