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中文摘要：
丰宁县北部有大面积燕山期火山岩分布,通过航磁及物化探资料综合分析,和顺店附近存在一个隐爆火山角砾岩筒,伴随着火山—侵入活动,火山口附近及其周围形成一系列环形断裂构造,加上区域构造运动的叠加,为深部含矿热液的运移提供了通道和储矿空间。近期的找矿实践证明,在火山构造的北部及东部已经发现了Ag、Pb、Zn多金属矿化,并有望形成具有经济价值的工业矿体,综合分析该区成矿地质条件,在火山构造的南部及西部有望实现找矿工作的新突破。
英文摘要：
Here are large-scale Yanshanian volcanic rocks distributed in Fengning area.Based on a comprehensive analysis of aeromagnetic,geophysical and geochemical data,the authors have found that there exists a concealed eruption breccia pipe around Heshundian area.Accompanied by volcanic-intrusive activities,a series of annular fault structures were formed in the vicinity of or around the crater.These structures provided ore-forming channels and space for deep ore-bearing hydrothermal fluids in association with the superposition of the regional tectonic movement.Recent prospecting practice has found Ag,Pb and Zn polymetallic mineralizations in northern and eastern parts of the volcanic structure.These mineralizations are expected to form economic industrial ore bodies.Based on a comprehensive analysis of ore-forming geological conditions of this area,the authors hold that the exploration work is likely to achieve new breakthrough in southern and western parts of the volcanic structure.
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