陕西凤县温江寺地区岩浆岩与金矿化的成因联系

摘要

西秦岭三叠系金矿的成因研究对实现老勘查区的找矿突破具有积极意义.以凤太矿集区温江寺金矿为研究对象,通过岩石学特征、地球化学特征等方面对该区金矿成因与岩浆岩的关系进行研究.结果表明,该区岩浆岩为早燕山期岩浆活动的产物,其本身并不含矿,矿质来源于地层,岩浆活动改变了薄互沉积岩系岩层力学结构,利于后期韧性剪切构造的局部强化.%The genetic study of the Triassic gold deposits in the West Qinling is of great significance to realize the prospecting breakthrough in the old prospecting area.In this paper,the Wenjiangsi gold deposit in Fengtai ore-concentrated district is selected as the study object.The relationship between the genesis of gold deposit and magmatic rock is discussed with petrology and geochemistry.The result shows that magmatic rocks in this area are the products of magmatic activities in Early Yanshanian.The magmatic activity has changed the mechanical structure of the thin inter-sedimentary rock system,which is beneficial to the local strengthening of later ductile shear structure.