胶东中生代耦合金成矿作用分析

Analysis on Mesozoic Coupling Metallogenic Mineralization in Jiaodong Area

该文结合华北东部中生代构造体制转折、郯庐断裂带左行走滑和华北地幔热柱多级演化3次重大地质事件,对胶东金成矿原因进行系统分析,提出胶东中生代金矿同期耦合作用成因的观点,认为胶东金矿是上述三者同期耦合成矿作用的结果,且幔源成矿流体在耦合成矿过程中发生分异富集演化,使得胶东矿集区形成如此大规模、高品位和不均衡分布的金矿。

Combining with three major geological events of Mesozoic tectonic regime inversion in eastern North China,left-lateral strike-slip of Tanlu fault zone and multiple mantle plume evolution of North China,the origin of Jiaodong gold mineralization system has been analyzed comprehensively,a view of Mesozoic coupling metallogenic mineralization in Jiaodong area has been put forward. It is regarded that Jiaodong gold deposit is the result of the above three coupling mineralization,and the ore-forming fluid occurred enrichment in the coupling metallogenic process. Thus,such a large scale,high grade and uneven distribution of gold deposit has been formed in Jiaodong area.