摘要
阳山金矿床位于甘肃省文县。区域构造演化分析、成矿年代学研究及野外地质观察表明,矿区岩浆岩与金成矿在空间及时间上均存在着密切关系。通过对阳山地区区域地层成矿元素含量及阳山金矿各类矿石成矿元素含量分析,厘定了泥盆系三河口组为阳山金矿床的矿源层。进一步研究矿床稀土元素、稳定同位素、流体包裹体等测定结果后认为,阳山金矿成矿物质来源复杂,具有地层和岩浆岩双重来源特征;成矿热液来源具有岩浆热液、地下热卤水、变质热液以及大气降水多种来源;自三叠纪以来,与区域构造演化有关的多次岩浆热液活动与阳山金矿成矿作用存在密切相关。综合分析认为,阳山金矿床成矿模式具有复合成矿作用的特点。
The Yangshan gold deposit is located in Wen County of Gansu Province with its magmatic rocks relating closely with the gold mineralization both in space and time shown by analysis of regional tectonic evolution, research on mineralizing chronology as well as field geological observation. Through analyzing on the ore-forming element content in the regional stratum and various ores from the Yangshan gold deposit, Sanhekou Formation of Devonian system has been determined as the ore-source stratum for the Yangshan gold deposit. After further studying on REE, stable isotope and fluid inclusion of the deposit , it is believed that the ore-forming matters with their sources both from stratum and magma originated complicatedly; oreforming hydrothermal fluid came from magmatic hot water, underground thermal brine, metamorphic hydrotherm atmospheric water, etc. multiple magmatic hydrothermal activities involved in regional tectonic evolution has a close relationship with the metallogenic process of the Yangshan gold deposit since Trias. The comprehensive analysis shows that the metallogenic model of the Yangshan gold deposit is characterized by complex mineralizion.
出处
《矿产与地质》
2007年第4期404-409,共6页
Mineral Resources and Geology
基金
中国人民武装警察部队黄金指挥部专项基金资助项目(编号HJ0201)
关键词
金矿床
成矿作用
成矿模式
阳山
文县
甘肃省
gold deposit, metallogeny, metallogenic model, Yangshan, Wen County, Gansu Province
