胶东中生代两期金矿化作用的对比研究及其意义  

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

作　　者：杨金中[1] 李光明[1] 

机构地区：[1]中国科学院地质与地球物理研究所

出　　处：《地质与勘探》2001年第1期33-37,共5页Geology and Exploration

基　　金：中国科学院创新工程项目!(KZCX1-Y -0 3);"九五"重大黄金项目!(KZ95 1-A1-4 0 4-0 2 -2 )资助

摘　　要：中生代 ,胶东地区存在燕山期和燕山晚期两期金矿化作用。燕山期金矿化与陆内碰撞 (俯冲 )的挤压地球动力学环境有关 ,形成中深石英脉型和蚀变岩型金矿床 ,以玲珑型和焦家型金矿床为代表 ,与区域花岗岩浆活动存在时间、空间和成因上的紧密联系。燕山晚期金 -多金属矿化与陆内拉张火山裂谷带地球动力学环境有关 ,形成浅成蚀变岩型 (或脉型 )金 -多金属矿床 ,以蓬家夼金矿床为代表 ,与青山期火山 -岩浆活动有关。本文就两期金矿化的成矿地球动力学环境、矿床地质特征、矿床稳定同位素特征等进行了详细的对比研究 ,指出燕山晚期金 -多金属矿化作用是胶东地区与燕山期金矿化作用同等重要的成矿阶段。加强燕山晚期金 -多金属成矿作用的研究 ,对于扩大胶东金矿床的找矿远景 。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 .

关 键 词：燕山期 燕山晚期 中生代 金矿化作用 金矿床 成矿地质 矿床地质 

分 类 号：P618.510.2[天文地球—矿床学]