内蒙古扎兰屯市熬尼尔河地区土壤地球化学特征及找矿方向

Soil geochemical characteristics and prospecting direction in Aonier river area, Zhalantun City, Inner Mongolia

研究区地处内蒙古-大兴安岭成矿省,大兴安岭中段古生代、中生代铁、锌、钨、金、铅、铬成矿带,博克图一朝不楞钨、铁、锌、铅成矿亚带,具备优越的成矿环境,以研究区1:1万土壤地球化学测量的12种元素地球化学数据为基础,通过对各元素进行统计计算获取富集系数、变异系数,开展R型聚类分析,同时结合研究区成矿地质条件,找到元素组合特征为Ag-Pb-Zn,W-Sn-Bi-Mo,Au-As的综合异常共计12处,研究认为地球化学异常主要受北西向和北东向的断裂构造控制,火山活动是本区元素富集成矿的主要原因,建议下一步在识别异常区蚀变带、矿化带的基础上辅以探槽及钻探验证,为下一步地质勘探设计工作提供坚实依据。

The study area is located in the Inner Mongolia Daxing'anling metallogenic province,the Paleozoic and Mesozoic iron,zinc,tungsten,gold,lead and chromium metallogenic belt in the middle Daxing'anling,and the Boketu chaobuleng tungsten,iron,zinc and lead metallogenic sub belt.It has a superior metallogenic environment.Based on the geochemical data of 12 elements from 1:10000 soil geochemical survey in the study area,Through the statistical calculation of each element,the enrichment coefficient and variation coefficient were obtained,and R-type cluster analysis was carried out.Combined with the metallogenic geological conditions of the study area,12 comprehensive anomalies with element combination characteristics of Ag Pb Zn,w-sn-bi-mo and Au as were found.The study shows that the geochemical anomalies are mainly controlled by NW and NE trending faults,Volcanic activity is the main cause of element enrichment and mineralization in this area.It is suggested that the next step should be based on the identification of alteration zone and mineralization zone in the abnormal area,supplemented by trench exploration and drilling verification,so as to provide a solid basis for the next step of geological exploration and design.