摘要
应用构造层次的观点,对松辽盆地的基底结构进行了分析和讨论。基底下部构造层次由前古生代深变质的结晶岩系组成,基底上部构造层次由晚古生代浅变质岩系和海西期花岗岩体组成。然后,从分析盆地构造的发育特征入手,结合其所反映的地壳动力学环境及其转化规律,沉积特征以及对油气的控制作用等因素综合分析,将松辽中新生代沉积盆地的形成和发展过程划分为六个演化阶段:壳下物质热隆起阶段、断陷构造阶段、断拗转化构造阶段、拗陷构造阶段、构造反转阶段和新生构造松弛阶段。
The basement of Songliao sedimentary basin of Mesozoic-Cenozoic can be dividedinto two parts: lower tectonic level, which consists of precambrian hypemetamorphiccrystalline rocks, and upper tectonic level, which is composed of upper Paleozoicepimetamorphic rocks and Hercynian granitic intrusives. Starting with studying the structural features of the basin, and having a syntheticalstudy combining with the dynamical background of crustal movement and regularity ofits transformation, sedimentary characteristics and law of hydrocarbon accumulation,the tectonic evolution of Mesozoic-Cenozoic can be divided into six stages: upper mantlethermal doming, fault-down warping, transformation from fault-down warping to de-pression, depression, structural inversion and a new structural relaxation stage.
出处
《大庆石油学院学报》
CAS
北大核心
1993年第1期8-15,共8页
Journal of Daqing Petroleum Institute
关键词
构造体系
盆地
演化
中新生代
tectonic system
[basin basement]
tectonic evolution stage
[Mesozoic-Cenozoic]
[Songliao Basin]
