土屋铜矿上方覆盖层元素分布规律研究  

DISTRIBUTION OF ELEMENTS IN THE REGOLITH OVER THE TU-WU COPPER DEPOSIT, GOBI DESERT TERRAIN, XINJIANG

作　　者：赵善定[1] 王学求[2] 

机构地区：[1]长安大学 [2]中国地质科学院地球物理地球化学勘查研究所

出　　处：《新疆地质》2005年第3期239-243,共5页Xinjiang Geology

基　　金：国家重点基础研究(G1999043212);地质大调查项目(DKD9905005)资助

摘　　要：通过对土屋铜矿上方覆盖层不同层位样品进行分析发现,成矿元素Cu在覆盖层底部靠近基岩的原地风化残积层和地表弱胶结层中富集,而在地表弱胶结层中又倾向于向两'极'富集,即在最粗粒级和最细粒级含量较高.考虑到采样效率和成本等综合因素,在区域调查中,以采集弱胶结层(5~40 cm)、细粒级样品(-160目)为最佳采样介质.The distributing and concentration of elements from samples collected from different depths and size fractions of regolith over the Tu-wu copper deposit was investigated. The results show that elements are enriched in coarse and fine fractions of the samples. Elements tend to concentrate in residual debris and cemented silt and clay matter. Sampling of fine fraction of samples （-160 mesh） from cemented soil horizon are cost-effective method for regional exploration.

关 键 词：土屋铜矿 覆盖层 分布规律 

分 类 号：P618.41[天文地球—矿床学]