云南哀牢山变质岩带的时代问题,自从1958年期间发现这里有很大的工业价值及远景的某些矿产以来,已引起不少地质工作者的兴趣,因为这个问题关系着对该区地质构造特征及成矿规律的认识。某勘探队首先提出了哀牢山变质带并非形成于太古代,而是中生代及古生代地层在燕山期发生变质而形成的产物。 The problem of the age of the Ailangshan metamorphic rock belt in Yunnan Province has attracted the interest of many geological workers since it was discovered during 1958 that some of the mineral resources have great industrial value and long-term prospects. This issue is of great significance to the geology Tectonic characteristics and metallogenic regularity. A prospecting team first proposed Ailao Mountain metamorphic belt is not formed in the Archean, but the Mesozoic and Paleozoic strata occurred during the Yanshan metamorphism and the formation of the product.