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祁连山区经多次掏造运动产生了各种构造体系,它们互相复合构成复杂的构造景观。古河西系斜接于天山-阴山、秦岭-昆仑东西向复杂构造带之间,它为本文论述的主要体系。它成熟于志留纪末期的祁连运动,为N55°—65°W走向的一系列互相平行的褶带及所夹岩块组成的巨型拗褶带。它控制了早古生代沉积和岩浆岩建造及有关矿产的分布。该体系包容了下元古界组成的东西向构造形迹的残块。可能开始于泥盆纪,而完成于白垩纪的祁吕系西翼褶带,其西端呈弧形切断古河西系,中段与古河西系重接。陇西系自东段北侧插入,造成向北东凸的帚状构造。河西系与古河西系反接,形成平行等距的隆起和沉降带。康藏歹字型构造体系将该区西南部古构造强行卷入,使之多受改造、歪曲。古河西系及其他上述构造体系,代表我国西北部顺时针扭动的运动方式。与我国东部华夏系及新华夏系所表现的逆时针扭动方式相呼应,共同显示了中国大陆向南滑的运动趋势。
The Qilian Mountains produced various tectonic systems after multiple digging campaigns, which combined with each other to form a complex tectonic landscape. The west system of the ancient Hegian Miagian in the Tianshan - Yinshan, Qinling - Kunlun between east and west complex structure zone, it is the main system discussed in this article. It is a mature Qilian movement at the end of Silurian. It is a series of parallel pleat folds and giant fold bands composed of rock blocks with a N55 ° -65 ° W strike. It controls the deposition of Early Paleozoic and the distribution of magmatic rocks and related minerals. The system contains the remnants of the east-west structural features of the Lower Proterozoic. May start in the Devonian, and completed in the Cretaceous Qilu West Wing fold, the western end of the arc cut off the ancient West River, the middle and the ancient river western reconnection. Longxi is inserted from the north side of the eastern section, resulting in a broom-like structure convex toward the north east. The Hexi Corridor and the ancient Hexi West anti-connection, forming parallel equidistant uplift and subsidence zone. The Kangzang-Yuzi-type tectonic system forcibly involved the ancient tectonics in the southwestern part of the area, making it more subject to alteration and distortion. Furukawa and other such structural systems represent the clockwise movement of the northwestern part of our country. Echoed by the anticlockwise twisting manner exhibited by the Huaxia Department and the Xinhua Department in the eastern part of China, showing the trend of southward sliding of the Chinese mainland.