摘要
大洼─昌图凹陷是铁岭─昌图盆地内的一个次级负向构造单元，是在海西褶皱带基底上发育起来的一个晚侏罗世至早白垩世的早断晚拗型凹陷．依其构造及沉积特征，并结合我国东部中生代的构造特点将其演化划分为四个阶段：即凹陷的孕育期、断陷期、拗陷期及萎缩消亡期．并运用板块理论对其演化的动力学机制进行探讨．最后通过构造对生储盖的控制作用，指出有利的勘探部位．
awa-Changtu depression is a subsidiary and negative tectonic unit in Tieling-Changtu Basin,which is an early faulted and late depressed sag developed from late Jurassic to early Cretaceous period on Vatiscan geosycline fold belt. According to the tectonic and sedimentary characteristics and also the tectonic characteristics in Mesozoic era of East China,its evolution process can be devided into four stages,i. e.pregnancy, faulting,depressing and shrivelling stages. Dynamic mechanism of depression evolution was studied by usingthe theory of plate tectonic. Favourable exploiting section was demonstrated after considering the tectonic control over the source-reservoir cap.
出处
《西安石油学院学报》
1996年第2期46-49,共4页
Journal of Xi'an Petroleum Institute
关键词
凹陷
断裂
构造演化
油气分布
awa-Changtu,sag, fracture, tectonic evolution
