| 王胜权,刘学武.河北牛圈银矿隐爆角砾岩地质特征及控矿作用[J].地质找矿论丛,2009,24(2):139-141 |
| 河北牛圈银矿隐爆角砾岩地质特征及控矿作用 |
| GEOLOGICAL CHARACTERISTICS AND ORE-CONTROLLING SIGNIFICANCE OF THE CRYPTOEXPLOED BRECCIA IN NIUJUAN SILVER DEPOSIT,IN HEBEI PROVINCE |
| 投稿时间：2008-08-07 |
| DOI：10.6053/j.issn.1001-1412.2009.2. 009 |
| 中文关键词: 牛圈银矿床 隐爆角砾岩 复式角砾 熔浆 河北省 |
| 英文关键词:Niujuan silver deposit cryptoexploded breccica composite breccia magma Hebei province |
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| 中文摘要: |
| 文章阐述了牛圈银矿隐爆角砾岩形成的地质背景、隐爆角砾岩的岩石特征,分析了隐爆角砾岩的物质来源、成岩方式及与银矿化的成因联系.查明隐爆角砾岩呈岩脉(墙)状沿断裂产出,复式角砾发育,角砾成分复杂,垂向、水平分带明显.隐爆角砾岩系深源富气体的火山熔浆,在地下封闭环境中经多次隐爆作用,沿断裂贯入而成.隐爆角砾岩形成之后,还经历了岩浆期后的气液活动和金属矿化过程,角砾岩体普遍含矿,复式角砾矿化强,隐爆角砾岩即是银矿体. |
| 英文摘要: |
| This paper discussed the geological background and characteristics of the cryptoexploded breccia in Niujuan silver deposit and analyzed its material source,rock-forming mechanism and relation to silver mineralization.The cryptoexploded breccica occurs as dykes along fractural zone and composite breccia developed with vertical and horizontal zoning.The cryptoexploded breccica is the deeply derived gas-rich,volcanic magma which was multiply cryptoexploded under closed ground environment then injected along the fractural zone.The cryptoexploded breccia was exposed to post-magma gas-fluid activities and metal mineralization thus it is ubiquitously mineralized.The composite brecciation is associated with strong mineralization and the cryptoexploded breccia is the silver ore body. |
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