褶皱构造对寨上金矿区矿体的控制

The Control Action of Fold Structure Over Orebodies in the Zhaishang Gold Deposit

断裂是寨上金矿区的赋矿构造,但其形成和形态受褶皱的控制,褶皱对成矿物质的迁移和富集具有内在的控制作用。根据区域构造格架及矿区脉体分布特征,将矿区控矿构造系统划分为4级。通过重点分析矿区控矿主体构造,即纳纳牧场背斜对矿体的控制作用,得出矿区已知脉体的产状明显受到褶皱的控制,由于岩性组合不同造成在褶皱的不同部位有不同的构造形式,褶皱控制了矿区的矿化程度。基于此认识,认为褶皱北翼具有较大找矿潜力,褶皱核部的南矿带脉体浅部具有一定的工作价值,而褶皱南翼则不具备成矿条件。

The fault structure is the Ore-controlling structure in the Zhaishang Gold Deposit, but the formation and the morphology are controlled by fold structure, and it also internally controls the migration and enrichment of ore- forming materials.The ore-controlling tectonic system is divided into four levels based on the regional tectonic framework and the vein distribution of the mining area.Through the analysis of the control function of ore body structure （Nana ranch anticline）,we obtain the occurrence of vein controlled by the Fold obviously.As the different parts of the Fold have the different lithologic association,and also have the different structural types,the Fold con- trols the degree of mineralization in mining area.For this understanding, north ore belt in the Fold north have greater potential for exploration, south ore belt in the Fold nuclear have a certain value in the superficial, and the southern fold is not a metallogenic conditions area.