Large clusters of gold deposits and large-scale metallogenesis in the Jiaodong Peninsula, Eastern China

The Jiaodong Peninsula is the largest repository of gold in China based on the production in history. It covers less than 0.2% of China's territory, b ut production of gold accounts for about one fourth of the whole country. T hus, the Jiaodong Peninsula is a typical area or case of large-scale metall ogenesis and a large clusters of mineral deposits in China. It is character ized by the large clusters of gold deposits in large scale, high reserve an d short mineralizing stage. In this study, we suggest that the eastern boun dary of the large clusters of gold deposits is as same as that of North Chi na Block, the gold deposits are hosted by Archean metamorphic rocks or Meso zoic granites, and the age of gold mineralization is 121.6 to 122.7 Ma. Gol d and related ore-forming materials are derived from multisources, i.e. Arc hean metamorphic rocks, granites and intermediate-mafic dikes, especially, intermediate-mafic dikes and calc-alkaline granites. The metallogenic geody namic process is constrained by the tectonic evolution of eastern North Chi na Block during Late Mesozoic, and it is the result of the interaction betw een mantle and crust as the boundary plates are playing role on the block.