叠加成矿系统与多成因矿床研究  

Research on superimposed metallogenic systems and polygenetic mineral deposits

作　　者：翟裕生[1,2] 王建平[1,2] 彭润民[1,2] 刘家军[1,2] 

机构地区：[1]中国地质大学(北京)地质过程与矿产资源国家重点实验室,北京100083 [2]中国地质大学(北京)岩石圈构造、深部过程及探测技术教育部重点实验室,北京100083

出　　处：《地学前缘》2009年第6期282-290,共9页Earth Science Frontiers

基　　金：国家自然科学基金项目(40234051,40602010);国家重点基础研究发展计划“973”项目(2006CB403503);地质调查综合研究项目“全国重要矿产和区域成矿规律研究”

摘　　要：漫长复杂成矿地质过程中多次成矿事件的叠加常形成叠加成矿系统,它是产生多成因矿床的主要原因。中国大陆独特的大地构造时-空特征和特殊的结构组成,造成了中国叠加成矿系统的发育,是中国区域成矿的一个特色。文章回顾了叠加成矿研究历史,分析了长江中下游成矿带等地的叠加成矿作用,探讨了叠加成矿的效应(形成大矿富矿、复杂成分矿石等)、形成机制和控制因素(稳定的地球化学场、重叠的构造带、同生断层多期活动、早期矿层的地球化学障作用),提出了叠加成矿系统的组合类型,其中以广义沉积型-岩浆热液型二者的叠加最为常见,且多形成大矿。随着矿产勘查和矿山开发的深入将可能发现更多叠加成矿现象。叠加成矿研究对于深入认识区域成矿特征和指导找矿勘查有重要理论意义和实用价值。The superimposition between different ore-forming events usually induced the formation of superimposed metallogenic systems in the long and complex ore-forming processes.It is the major cause for the generation of many complex and compound mineral deposits.The special tectonic situation and the specific fabric composition make the Chinese mainland a compound and active continent,so caused the development of superimposed metallogenic systems in China.It is one of the most important features of regional metallogeny of China.On the basis of a brief retrospect on the research history of metallogenic systems,superimposed metallogenic effects（generation of large and rich ore deposits,complex composition of ores,etc.）,forming mechanisms and major controlling factors（stable geochemical fields,overlap of ore-forming structural belts,repeated activities of contemporaneous faults,geochemical barriers of some early ore beds,etc.）of superimposed metallogenic systems are discussed in this paper.Also basic types of superimposed metallogenic systems and their temporal-spatial distribution are summarized.Among them the superimposition between earlier sedimentary mineralization and later magmatic hydrothermal mineralization is the most common combination of superimposed metallogenic systems.Complexity of superimposed ore-forming processes caused the complexity of a superimposed metallogenic system.So only through much more detailed and thorough research can we understand better the superimposed metallogenic systems,including their forming mechanisms and processes.Research on superimposed metallogenic systems is very important both in recognizing regional metallogeny of China and in guiding mineral exploration activities.

关 键 词：叠加成矿系统 成矿事件 多成因矿床 形成机制 时空分布 

分 类 号：P611[天文地球—矿床学]