Present situation and research progress of the SEDEX deposit
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摘要: SEDEX型矿床是一类很重要的矿床,提供了世界上约60%的铅和50%的锌.通过全面参阅前人研究成果及相关文献,系统概述了SEDEX型矿床的成矿构造背景和地质特征,结合国内典型矿床的S、Pb、H、O及B同位素,从地球化学方面综合分析探讨了SEDEX型矿床成矿物质和流体来源,在已有成矿模式的基础上,进一步完善了成矿作用过程和机制.最后,简单介绍了近年来SEDEX型矿床研究新进展,并对存在的问题和今后发展趋势提出了一些建议.Abstract: Sedimentary exhalative deposits (SEDEX) are an important kind of ore deposits,and provide about 60% of the lead and 50% of the zinc in the world.In this paper,based on consulting previous and the latest research achievements,reading relevant literatures and synthesizing the different theories,the authors summarize the ore-forming tectonic setting and geological characteristics and,in combination with S,Pb,H,O and B isotopes,discuss the sources of ore-forming materials and fluids in terms of geochemistry.Based on former metallogenic model,the authors further improve the mineralization mechanism.In the end,this paper describes the new research progress,and gives some suggestions for the existent problems and development trends in the future.
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