根据近年来我国地质工作者在青藏高原的地质调查和中法地质及地球物理工作者在喜马拉雅地区合作研究所取得的科学成果,使我们有可能对青藏高原的地壳结构及其演化作出新的认识和解释。一、高原的构造格架新的资料进一步说明,青藏高原是由欧亚古陆和冈瓦纳古陆分割出来的一些不同性质的构造块体汇聚、拼合而成的一个构造集合体,四周被几个刚性地块所环绕,形成一个相对封闭的构造系统。高原总的构造格局以几条近东西向的构造条块和大型断裂带相间列为特征,中部撒开,两端收敛,西端紧缩,形成“帕米尔构造结”;东部向南急转,形成南北向的“三江褶皱 According to the geological survey conducted by Chinese geologists in the Qinghai-Tibet Plateau and the scientific achievements made by the Sino-French geology and geophysical workers in the Himalayan region in recent years, it is possible to make a new understanding of the crustal structure and its evolution over the Tibetan Plateau And explain. First, the plateau tectonic framework New information further shows that the Qinghai-Tibet Plateau by the Eurasian ancient land and Gondwanaland ancient land of some different nature of the convergence of convergence of a tectonic assembly, surrounded by a few Rigid land surrounded by the formation of a relatively closed system of construction. The general structure of the plateau is characterized by a series of nearly east-west structural blocks and large fault belts. The central part is open and the ends converge and the western end is tightened to form a “Pamir structural knot.” The eastern part of the plate turns sharply southward to form a North-South "Sanjiang fold