首页 | 本学科首页   官方微博 | 高级检索  
     检索      

浅成低温热液型金矿床研究最新进展
引用本文:江思宏,聂凤军,张义,胡朋.浅成低温热液型金矿床研究最新进展[J].地学前缘,2004,11(2):401-411.
作者姓名:江思宏  聂凤军  张义  胡朋
作者单位:中国地质科学院,矿产资源研究所,北京,100037
基金项目:国家重点基础研究发展规划 ( 973 )资助项目( 2 0 0 2CB412 60 6),科学技术部“十五”科技攻关资助项目( 2 0 0 1BA60 9A 0 3 )
摘    要:浅成低温热液型金矿床是目前世界上最为重要的金矿床类型之一 ,也是当前国际矿床学界研究的热点之一。近年来对该类型矿床的深入研究 ,包括对该类矿床的进一步分类、流体形成演化、成矿时代、与碱性岩之间的关系 ,以及与斑岩型及其他类型矿床之间的内在联系等方面均取得了重要进展。研究表明 ,高硫化型与低硫化型金矿床不仅在矿物组合上具有显著差别 ,而且在形成的构造背景、成矿机理等方面也明显不同。高硫化型矿床主要形成于挤压应力场环境和流体混合导致成矿物质沉淀 ,而低硫化型矿床主要产于张性或中性环境下由于流体的沸腾使得矿体形成。浅成低温热液型金矿床的形成时间受其所处大地构造环境演化的控制。与浅成低温热液型金矿床有关的碱性岩通常具有相似的地球化学特征 ,即碱性岩具有异常高的氧逸度和富含挥发份。由于发现大量的浅成低温热液型金矿床与斑岩型矿床之间密切伴生 ,它们之间的内在关系正在引起越来越多矿床学家的重视 ,对其形成机理的研究还有待于进一步深入

关 键 词:高硫化型  低硫化型  浅成低温热液  碱性岩  斑岩型  金矿床
文章编号:1005-2321(2004)02-0401-11
修稿时间:2004年1月16日

THE LATEST ADVANCES IN THE RESEARCH OF EPITHERMAL DEPOSITS
JIANG Si-hong,NIE Feng-jun,ZHANG Yi,HU Peng.THE LATEST ADVANCES IN THE RESEARCH OF EPITHERMAL DEPOSITS[J].Earth Science Frontiers,2004,11(2):401-411.
Authors:JIANG Si-hong  NIE Feng-jun  ZHANG Yi  HU Peng
Abstract:The Epithermal gold deposit is one of the most important types of gold deposit in the world, and also is one of the “hot spots” studied by the international economic geologists. In recent years, significant advances have been made, including the further classification of the deposit, the evolution of the ore-forming fluid, the age determination of the ore precipitation, and the relationship of the deposit with alkaline rocks, and with porphyry and other types of ore deposits. The researches indicate that the high- and low-sulphidation epithermal gold deposits not only have different mineral assemblages, but also occur in distinct tectonic settings with different ore-forming mechanism. The high sulphidation gold deposit is mainly resulted from the fluid mixing under the compressional stress regime, while the low sulphidation gold deposit from the boiling under the extensional (or intermediate) stress regime. The age of the epithermal gold deposit is predominantly controlled by the tectonic evolution. The alkaline rocks associated with the epithermal deposits have similar geochemical features, and are characterized by enriched volatile with distinctly high oxygen fugacities. As so many epithermal gold deposits are associated with the porphyry Cu-Au deposits, their genetic relationship has been highlighted by the economic geologists, and the metallogenesis should be studied further in the future.
Keywords:high sulphidation  low sulphidation  epithermal  alkaline rocks  porphyry  gold deposits
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号