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在我西南地区,即东径100°—103°30′,北纬23°07′—31°45′大约面积有14万平方公里范围,存在一条走向近南北的构造岩浆杂岩带。早在1945年,知名的构造地质学家黄汲清将这个地带称为“康滇地轴”。他在其名著《中国主要地质构造单元》一书中,明确地指出:磨盘山的片麻岩带,金沙江和云南中部的沉积的震旦带,以及他们可能向北和向西北的延展部份,构成一个巨大的前寒武纪地块,此后将称为康滇地轴。因为它形成两个不同地区域的分界线,所以称为轴。我国地质工作的前驱,杰出的地质学家李四光教授,在总结我国
In the southwest of our country, ie, the east path is 100 ° -103 ° 30 ’and the latitude 23 ° 07’-31 ° 45’N is about 140,000 km 2. There is a tectonic magmatic belt that goes north and south. As early as 1945, the well-known structural geologist Huang Ji-ching called the zone the “Kang-Dian axis.” In his book The Main Geotectonic Unit in China, he clearly pointed out that the gneiss belt of the Mopanshan, the sedimentary Sinian belts of the Jinsha River and central Yunnan, and the extensions they may have to the north and northwest Copies, constitute a huge Precambrian plots, will be known as Kang Dian axis. Because it forms a dividing line between two different regions, it is called an axis. Geological work pioneer of our country, an outstanding geologist Professor Li Siguang, summed up in our country