鲁中南地区燕山期侵入岩与金成矿

鲁中南地区受区域性大断裂－－沂沭断裂带控制，中生代有较大规模的中性、偏碱性火山岩型岩体侵入和火山喷发，在火机构内或围绕次火山岩小岩体，形成与之相关的火山岩型金矿化。燕山期火山夺具备幔源特征。侵入岩对金成矿有2种作用，一是通过岩浆携带成矿物质经过分异派生形成金矿，二是在岩浆活动过程中，借助热力和气液循环对围岩进行了广泛改造和蚀变，使之活化迁移，在构造裂隙中富集成矿。燕山期侵和岩为金矿形成提供了物源和热源，是金成矿的主要控制因素。

Intrusive rocks of Yanshan period and gold mineralizationin middle-south of Shandong

Yishu fault,the regional major fault dominated the geological distribution of middle south of Shandong.There are massive intermediate, alkali rock body intrusions and volcanic explosions in the Mesozoic era. They formed volcanic rock type gold mineralizations that have correlation with themselves inside the volcanic tectonic or just around small rock bodies of the subvolcanic rock.The volcanic rocks of Yanshan Period have features of the mantle source.The intrusive rocks effect gold mineralizations by carry the ore materials by the magma to induce and form gold deposit,or during the magmatic activity by heat and gas liquid circulation,it broadly reformed and migrated,final enriched to form the gold deposits in structure fracture.The intrusive rocks of Yanshan Period supplied the material source and heat source for gold deposits,they are the main controlling actors of gold mineralization.