云南西部元古代地层发育,分布非常广泛,其中蕴藏着非常丰富的铁矿,对其研究、划分和对比,不仅能掌握矿产的分布和生成条件,而且可以了解地壳的演化,因此在国民经济上具有十分重大的意义。 近年来,云南西部元古代地层的研究,在叠层石、微古植物和同位素年龄方面,取得许多新的进展。现将其分别叙述于后。 In western Yunnan, the Proterozoic strata are well developed and widely distributed, and are rich in iron ore. The study, division and comparison of these strata can not only grasp the distribution and formation conditions of the minerals but also understand the evolution of the crust so that in the national economy It is of great significance. In recent years, the study of Proterozoic strata in western Yunnan has made many new progresses in the aspects of stratigraphic rocks, microfossil plants and isotopic ages. Now described in the post.