太行山北段深源流体与金矿成矿作用  

THE DEEP DERIVED FLUIDS AND GOLD MINERALIZATION IN THE NORTHERN PART OF TAIHANG MOUNTAINS〖HJ*8]

作　　者：牛树银[1] 孙爱群 王礼胜 李瑞 罗殿文[2] 陈华山[2] 

机构地区：[1]石家庄经济学院 [2]河北地勘局

出　　处：《矿床地质》1999年第1期83-90,共8页Mineral Deposits

基　　金：地矿部百名跨世纪科技人才培养计划项目;地矿部定向科研项目

摘　　要：太行山北段金矿研究表明，金的成矿物质主要来自深源，部分萃取自迁移途中的围岩。成矿具有明显的成矿集中期和集中区，这种时间、空间分布特征与地幔热柱多级演化密切相关。含金的深源流体随地幔热柱多级演化向上迁移，当其迁移到幔枝（变质核杂岩）外围主拆离滑脱带及其上盘裂隙扩容带时，由于物理、化学条件的改变，使其聚集沉淀成矿，并可表现出斑岩脉型、隐爆角砾岩型、大脉型、网脉型等多种矿石类型为一体的系列成矿。硫、铅、氢、氧等同位素测定值亦表明含金流体主要来自深源，其上升过程中有部分壳源流体和大气降水混入，因此，构造变形是成矿控矿的主导因素。本文还进一步探讨了构造成矿控矿作用，归纳出了成矿模式。A study of gold deposits in the northern part of Taihang Mountains reveals that gold mineralization was mainly controlled by sources and migration passages of metallogenic materials as well as favorable structural expanding zones. Besides being partly extracted from ore bearing country rocks, gold mainly came from the depth. The spatial and temporal distribution of gold orebodies are closely related to multistage evolution of mantle plume. When deep derived gold bearing fluids migrated up with the multistage evolution of mantle plume, the changes of physical and chemical conditions caused the concentration of the fluids in the main detachment zone of surrounding mantle plume (metamorphic core complex) as well as in fractural expanding belts on the hanging wall to form various types of deposits such as porphyritic vein type, explosion breccia type, big vein type and net shaped vein type. The estimated sulfur, lead, h

关 键 词：深源流体 成矿作用 成矿模式 太行山 金矿床 

分 类 号：P618.510.5[天文地球—矿床学] P618.510.4[天文地球—地质学]