青海同仁县铜钼多金属矿床地质特征及控矿因素

Geological characteristics and ore controlling factors of Tongren copper molybdenum polymetallic deposit, Qinghai

青海省同仁县铜钼多金属矿床大地构造位置处于西秦岭西段,矿床形成时的大地构造背景为三叠纪南部大洋俯冲的岛弧带。下二叠统大关山群出露于岗察背斜轴部,走向北西-南东向,为一套碳酸盐岩、碎屑岩建造。侵入岩出露较广。下二叠统大关山群上岩组碳酸盐岩-碎屑岩建造及下三叠统隆务河群大理岩碎屑岩,是金矿的矿源层。文中笔者对该矿矿床地质特征进行分析的基础上,探讨其控矿因素,并总结其矿床成因,旨在为该区进一步深入的研究工作提供参考。

The tectonic position of the copper molybdenum polymetallic deposit in the Tongren County of Qinghai province is located in the western part of West Qinling Mountains, and the tectonic setting of the deposit is the island arc zone of the Southern Ocean subduction in the southern three period. The lower two Permian Daguan mountain group is exposed to the axis of the gang Cha anticline, and is heading for NW to NW. It is a set of carbonate and clastic rocks. The invasion of Iwade is wide. The lower two Permian Daganshan group upper rock group carbonate clastic rock formation and the lower three Permian long river group marble marble clastic rock, is the gold ore source bed. In this paper, based on the analysis of the geological features of the ore deposit, the ore controlling factors are discussed and the genesis of the ore deposit is summed up in order to provide reference for further research in this area.