西藏的推覆构造及其地质意义

西藏的地质工作虽然早在一百多年前就已开始了,但是,由于这个地区的特高海拔,高原独特的自然地理条件,地质工作主要集中在高原边缘地区,而广大的高原内部,长期以来,地质上几乎是个空白。六十年代以来,由于板块构造学说的兴起与发展,这里被认为是两个大陆板块相碰撞的典型例子,从而引起了世界地学界人士的瞩目。

THE NAPPE STRUCTURE OF XIZANG AND ITS GEOLOGICAL SIGNIFICANCE

Based upon materials collected by the author in recent years various types of nappe structures are here listed, with discussions of the manner and time of their formation. It is suggested that this kind of structures was produced due to the push-slipping of a series of fractured piece, that were formed along the upper part of earth’s crust during the continental collision. As a result of collision and compression of the continental blocks these structures are developing. To author’s considers that the study of nappe structures is of practical significance in reconstracting the geological environment of a certain region and furthermore it can also be served as a theoretical guide to the study of the mode of crustal movement etc.