Emplacement mechanism of the super-large Jingshan gold deposit in Jiangxi, China

Jingshan superlarge gold deposit is a typical deposit closely related to the ductile shear zone, developing the economic enrichment during the transition form the ductile deformation to the brittle deformation. The ore-forming process of Jingshan Au deposit can be described as the development of marine volcanic-turbidity current Au-bearing initial sedimentation → regional metamorphism and the first enrichment → strong transformation of dynamic metamorphism and deformation→ore-controlling and ore-holding of ductile shear structure→supperimposed transformation and enrichment of magma-hydrothermal solution. This process can be summarized as the “source-migration-accumulation” metallogenic-geochemical process of Au. The proved Au reserve of this deposit has exceeded 100 t and its prospect of searching for ore is considerable. So it is called the only super-large gold deposit in the south of the lower reach of the Yangtze River, China. Project supported by the Key Program of the 8th Five-Year Plan of China Synopsis of the first author Li Peizheng, associate professor, born in Dec. 1948, majoring in Geotectonic and Metallogent Gold Deposits Geochemistry.