五河地区金矿成矿模式

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英文篇名：GOLD METALLOGENIC MODEL FOR WUHE AREA 作者：张顺林 ; 盛中烈 ; 朱义坤 ; 张家嘉 英文作者：ZHANG Shun-lin;SHENG Zhong-lie;ZHU Yi-kun;ZHANG Jia-jia;Institute of Exploration Technology of Anhui Province;Department of Land and Resources of Anhui Province; 关键词：五河群 ; 金矿 ; 郯庐断裂 ; 成矿模式 ; 断层阀模式 英文关键词：Wuhe Group;;Gold Ore Deposit;;Tan-Lu Fault;;Metallogenic Model;;Fault Valve Model 中文刊名：AHDZ 英文刊名：Geology of Anhui 机构：安徽省勘查技术院;安徽省国土资源厅; 出版日期：2019-03-15 出版单位：安徽地质 年：2019 期：v.29;No.110 语种：中文; 页：AHDZ201901003 页数：8 CN：01 ISSN：34-1111/P 分类号：14-21

摘要

通过《五河县荣渡-小溪集金及多金属矿整装勘查》工作,在总结前人工作及研究成果的基础上,认为五河群原岩生成环境为大陆边缘或岛弧地区,五河岩群西堌堆岩组是区内金矿最主要的赋矿层位,燕山期花岗闪长斑岩与金矿形成关系密切,矿石铅与围岩铅具有相似的分布特征,表明两者有同源性,成矿物质可能部分来源于围岩。金矿迁移方式可分为三个阶段:初步聚集阶段(预富集)-多次迁移阶段(积累期)-集中阶段(成矿期),五河地区金矿成矿时代应为多期次,综合来看本区成矿年龄大致在110～160Ma之间,提出含金韧性剪切带成矿作用三阶段模式和断层阀成矿模式。
        Through the work of the Package Exploration of Gold and Polymetals in the Rongdu-Xiaoxiji Area of Wuhe County, on the basis of summarizing predecessors' work and research results, it is argued that the original rock formation environment of the Wuhe Group is continental margin or island arc area, the Xigudui Formation of the Wuhe Group is the major host of gold deposit in the area, the Yanshanian granite diorite porphyry is closely related to gold ore formation, and ore lead and wall rock lead have similar distribution characteristics, indicating that they are congenetic, and ore-forming materials may be partially derived from the wall rock. Gold migration patterns can be divided into three stages: initial stage(pre-enrichment)-multi-migration stage(accumulation)-concentration stage(mineralization). The gold mineralization should be multi-staged in the Wuhe area, roughly between 110-160 Ma in line with the local metallogenic ages, thus, a gold-bearing ductile shear was proposed,with three-staged and fault-valved metallogenic model.

引文

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