第三纪红色碎屑岩层在青海分布广泛。长期以来，由于它特殊的地理地质条件，在这一层位中寻找金属矿床的工作不受重视，至今未见在该层位中发现金属矿（化）的文献报导。但在一些地区的第三纪红色碎屑岩层中有化探金异常。在某地Ａｕ异常浓集区所进行的化探查证工作初步揭示了Ａｕ异常的形成是由于次生富集作用引起的，并在水系重砂样品中首次发现金矿物颗粒，从而为地质工作者重新认识这个金属矿的“不毛之地”提供了确凿证据。 Tertiary red clastic rocks are widely distributed in Qinghai. For a long time, due to its special geographical and geological conditions, the work of searching for metal deposits in this layer has been neglected. So far, no literature on the discovery of metal ores has been found in this layer. However, in some areas of the Tertiary red clastic rock has a gold anomaly. The geochemical exploration work carried out in an anomaly concentration area in Au initially revealed that the formation of Au anomaly was caused by secondary enrichment and the first discovery of gold mineral grains in the heavy sand samples of water system, Re-understanding of this metal mine “barren land” provides conclusive evidence.