鲁中南地区燕山期侵入岩与金成矿  

Intrusive rocks of Yanshan period and gold mineralization in middle-south of Shandong

作　　者：刘金友[1] 高池兴 赵新峰[2] 

机构地区：[1]武警黄金第七支队,山东烟台264004 [2]武警黄金地质研究所,河北廊坊065000

出　　处：《黄金地质》2002年第2期54-57,共4页Gold Geology

摘　　要：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 ,在火山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。燕山期火山岩具备幔源特征。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。燕山期侵入岩为金矿形成提供了物源和热源 。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.

关 键 词：鲁中南地区 燕山期 侵入岩 金矿床 成矿作用 火山喷发 

分 类 号：P618.51[天文地球—矿床学]