一、中蒙大陆中轴构造带的含义在亚州大陆东部,南起昆明、经兰州、蒙古的乌兰巴托,至苏联贝加尔湖西端的伊尔库茨克,可连成一条南北向的中轴标志线,以此线为界,可把中蒙大陆区分为西、东两个半区,它们在地势、新构造活动、地震活动、地壳——岩石圈结构,以及至少是中新生代以来的地质发展、岩浆活动和成矿作用等方面,都有重要的区域性的差别,在某些方面还显示了东西两半区具有反对称的特点。这条中轴标志线的西侧,大约在东 First, the meaning of the central axis of China-Mongolia continental belt in the eastern part of the Asian continent, Kunming from the south, Lanzhou, Mongolia Ulan Bator, to the western end of the Soviet Baikal Irkutsk, can be connected into a north-south Axis-mark line, with this line as the boundary, can divide the mainland of China and Mongolia into the west and east two and a half areas, they are in the terrain, neotectonic activity, seismic activity, crust - lithosphere structure, and at least Mesozoic There are important regional differences in geological development, magmatic activity and mineralization. In some aspects, it also shows that the two eastern and western regions are antisymmetric. On the west side of this axis mark, about east