DISCUSSION ON THE RELATIONSHIP BETWEEN DUCTILE SHEARING AND MINERALIZATION OF GOLD

Now it is commonly thought that the ore-forming driving forces and mechanism of shear-zone type gold deposit is the ductile shearing,and lots of experiments have carried out.In this paper the author proposes that the ore-formation of ductile shearing is almost impossible according to theoretical analysis and field examples.A ductil shear-zone type gold deposit is just epigenetic hydrothermal deposit of after-shearing type,not a syngenetic deposit of syn-shearing or post-shearing type.The mineralization always delays to the ductile shearing,the ore-forming material mainly comes from the depth or host rock,so shear-zone type deposit is only a descriptive terminology,and has no genetic meaning.