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三江构造带是青藏高原北部的巨型北特提斯构造带的一部分。它在整个特提斯构造带中争论问题最多,研究程度也较低。对它的研究可解决联合大陆及冈瓦纳古陆的存在与分裂等问题。故三江构造带是世界地质学家所瞩目的地区。三江中段构造带,是三江构造带由近东西到近南北的转折地带,各构造带在这部位受到强烈压缩和归并。在不很大的地域内集中了这样多的各级构造带,这在世界上是罕见的。
The Sanjiang tectonic belt is a part of the giant North Tethys tectonic belt in the northern part of the Qinghai-Tibet Plateau. It has the most controversy and the low degree of research in the entire Tethyan tectonics. Its research can solve the problems of the existence and the division of the ancient continent of mainland China and Gondwanaland. Therefore, the Sanjiang tectonic belt is a region that the world’s geologists have been paying attention to. The middle section of the Sanjiang tectonic belt is the turning point of the Sanjiang tectonic belt from near east-west to near-north-northward. The tectonic belts are strongly compressed and merged in this part. It is rare in the world for such a large number of tectonic belts to be concentrated in a not very large area.