COMPARISON OF DIFFERENT MINERALIZATIONS IN MESOZOIC AND ITS SIGNIFICENCE IN JIAODONT REGION,SHANDONG PROVINCE

There are two mineralization stages , Yanshanian and Late-Yanshanian mineralization in Jiaodong region , Shandong Province . Yanshanian mineralization which formed quartz vein type ( Linglong tpye ) and altered rock type ( Jiaojia type ) gold deposits , has been studied for several years . It was related to the regional granitic magmatism which had been formed in compressive dynamic environment . Late-Yanshanian mineralization was related to Qingshanian middle-mafic magmatism in extension environment . Altered breccia type gold deposits , such as Pengjiakuang gold deposit , were formed in shallow depth ( 1 km～3 km ) . With the comparison of the ore-forming environments , geological characteristics and stable isotope of these two mineralization stages, this paper has proposed that Late-Yanshanian gold-multimetal mineralization is as important as Yanshanian gold mineralization in Jiaodong region . Studying the Late-Yanshanian mineralization in detail will be help to the enlargement of the gold reserves and the sustainable development of the gold industry in Shandong Province .