大兴安岭东坡扎兰屯一带成矿地质特征及找矿前景分析

Analysis of Metallogenic Geological Characteristics and Prospecting Potential in Zha Lantun, Eastern Slope of the Greater Khingan

大兴安岭东坡扎兰屯一带位于大兴安岭成矿带北段,随着内蒙古地勘基金矿产地质调查项目的开展和研究,对该区域的成矿地质特征和找矿前景有了进一步的认识和总结。主要研究成果是归纳了该区域的地层、构造、岩浆岩、遥感影像、航磁、地球化学等特征,并结合以往发现的矿产地、矿点等特征,进行综合对比融合分析,重新厘定了地层层序、岩浆岩分布和侵入期次、构造、矿化蚀变等特征,总结了这一带主要的北东向区域性控矿构造、燕山期主成矿期次、铜铅锌银钼多金属矽卡岩型、热液充填型矿产成矿类型。

The Zha Lantun area of the eastern slope of Greater-hinggan Mountain is located in the northern part of the Da-hinggan Mountain metallogenic belt. With the development and research of Mineral survey project which subsidized by Inner Mongolia Geological Exploration Fund, people got a further understood and summary of the Metallogenic geological characteristics and prospecting potential in this region. The main research results of this paper is that we summarized the characteristics of the formation, structure, magmatic rock, remote sensing image, aeromagnetism and geochemistry in this area. Combined with the characteristics of previously discovery of mining areas and mineral occurrence, we conduct a comprehensive comparison and fusion analysis, then redetermined the stratigraphic sequence, magmatic rock distribution, intrusion period, structure and mineralized alteration. Finally summarized the main NNE-oriental regional ore-controlling structure, Yanshanian main ore-forming period, metallogenic model of copper-lead-zinc-silver-molybdenum polymetallic skarn type and hydrothermal filling type.