摘要
东天山雅满苏地区晚古生代地层以石炭系和二叠系地层为主,为进一步评价其成矿潜力以及揭示赋矿层位,以区内各地层岩石化学光谱分析数据为基础,开展比较详细的地球化学分析,基于成矿元素富集系数(K)、成矿元素变异系数(CV)以及后期叠加强度(D)等三个方面讨论了各地层内Cr、Au、Ni、Pb、As、Sb、Cu、Zn、Ag、Co、Bi共11种元素的地球化学特征。分析显示:成矿元素富集系数(K)分析表明雅满苏地区各地层中除阿尔巴萨依组以外,其余地层As元素均富集,Zn、Cr、Ni、Sb元素也存在不同程度的富集,存在潜在成矿可能;成矿元素后期叠加强度(D)分析表明本区的Au、Sb、Bi、Ni等元素存在不同程度的后期叠加作用;成矿元素变异系数(CV)分析表明本区成矿元素具有一定的成矿潜力。对雅满苏地区晚古生代各地层成矿能力评序得出最优势成矿元素为As,石炭系地层是As元素主要赋矿层位。
The Late Paleozoic strata in the Yamansu area of the East Tianshan are dominated by Carboniferous and Permian strata.In order to further evaluate its metallogenic potential and reveal the ore-bearing horizon,detailed geochemical analysis was conducted in this paper based on the analysis of the petrochemical spectral data of each layer in the area.Geochemical characteristics of Cr,Au,Ni,Pb,As,Sb,Cu,Zn,Ag,Co,and Bi were discussed through the ore-forming element enrichment coefficient(K),mineralization coefficient of variation(CV)and late superposition strength(D).The enrichment coefficient(K)of ore-forming elements indicates that in the layers of the Yamansu area,except for the Albasayi group,the As elements in the other layers are enriched,and the Zn,Cr,Ni and Sb elements are also enriched in different degrees,showing the possibility of potential mineralization.The late superposition strength(D)analysis of ore-forming elements indicates that there are different degrees of post-addition of elements such as Au,Sb,Bi and Ni in this area.And the analysis of CVshows the ore-forming elements in this area have certain mineralization potential.According to the ore-forming ability of the Late Paleozoic layers in the Yamansu area,the most dominant mineralization element is As,and the Carboniferous stratum is the main orebearing horizon of the As element.
作者
孙乾龙
弓小平
付鹏飞
齐锐
李文亮
俞帅一
SUN Qianlong;GONG Xiaoping;FU Pengfei;QI Rui;LI Wenliang;YU Shuaiyi(Xinjiang University,Urumqi 830046,China)
出处
《有色金属工程》
CAS
北大核心
2020年第3期69-76,共8页
Nonferrous Metals Engineering
基金
新疆维吾尔自治区高校科研计划项目(XJEDU2019I007)
国家自然科学基金资助项目(41562010)。
关键词
地层
含矿性
地球化学
雅满苏地区
东天山
stratum
ore-bearing
geochemistry
Yamansu area
East Tianshan
