摘要
内蒙古大青山地区伸展构造发生于中生代中晚期 ,主要表现为由北西向南东方向多层次、多级别的剥离断层活动 ,形成了马厂沟—白银不浪、脑包沟—德兴奎及二叠系脑包沟组顺层流劈理带三个不同层次的变质核杂岩区。由此得出的结论是 ,大青山中生代山间盆地的形成及大青山的隆起与该期伸展构造作用关系密切[6] 。
The extnsional tectonics in Daqingshan region, Inner Mongolia, which occurred in late Mesozoic, appeared to be the multigrade detachment faulting from NW to SE, and formed three metamorphic core complex areas: MachanggouBaiyinbulang core complex, NaobaogouDexingkui core complex and the belt of cleavage with bedding within Naobaogou Group of Permian. The conclusion is that the formation of the Mesozoic Daqingshan basin and the uplift of the Daqingshan crystalline basment are closely related to the Mesozoic extensional tectonics.
出处
《内蒙古地质》
2001年第4期1-9,共9页
Geology of Inner Mongolia
