豫西上宫金矿田F60顺层滑脱构造特征及找矿意义

Characteristics and prospecting significance of F60 bedding detachment at Shanggong gold field in western Henan

依托前期开展的全国老矿山找矿项目资料以及正在开展的整装勘查项目成果,对F60顺层滑脱构造特征进行了初步研究,认为该构造是在熊耳群火山岩内部形成的一组平行于不整合面、具轻微滑动的重力滑脱构造,其严格控制了薄脉型金—银—铅—锌矿体的产出。其形成机制是:花山岩体上侵,近岩体的火山岩地层抬升,受重力及岩体斜向剪切力影响,火山岩内的薄弱层发生微弱的滑动,从而形成一系列层间滑脱构造。其成矿模式对区域找矿工作具有一定的指导意义。

According to achievements of the national old mine prospecting projects and the underway integrated exploration projects,this paper studied the characteristics of F60 Bedding Detachment and got conclusions as follows： the structure is a detachment with slight sliding,which is formed inside of the Xiong＇er Group volcano rocks and is parallel to unconformity surface. This thin vein type of Au-Ag-Pb-Zn ore bodies are strictly controlled by the detachment. It＇s formation mechanism is as follows： the volcano rock strata uplift because of intrusion of Huashan rock,then the weak layer in volcanic rock slightly slip and a series of bedding detachments are formed. The paper conclude that the metallogenic model is of great significance for the regional prospecting.