摘要
覆盖区寻找隐伏矿是今后找矿工作重要的勘查目标,常用的勘查方法有气体测量法和化学偏提取的方法。这些方法野外工作量大,室内操作复杂,外界干扰因素大,分析测量重现性较差。为此,我们建立了土壤纳米简便提取和测量的新方法——超声波纳米提取测量法,利用超声波空化原理,快速提取土壤中的纳米物质,并在内蒙古半干旱草原区上方开展了超声波纳米提取测量法的地球化学勘查方法的试验工作。结果表明,超声波纳米提取测量法获得的地球化学异常明显,对下伏矿体的指示效果较为明确,其中主要成矿元素Cu、Pb、Zn、Ni、Ag在矿体上方均有明显的异常,且异常衬度与矿体深度的对应关系好。矿体深度浅,异常衬度大,矿体深度深,异常衬度小。超声波纳米提取法可作为该景观区寻找隐伏矿的有效手段。
Concealed ore deposits in covered areas are important targets in the future prospecting work.Common exploration methods include gas extraction and chemical dispersion extraction.These methods have a large amount of work in field;the indoor extraction process is complicated,the operation is complex,and it is not environmentally friendly.Besides,the results are often influenced by external influences,and the reproducibility of measurement results is poor.Based on ultrasonic technology,this work established a new method for simple extraction of nanoparticles in soil,and conducted test work on semi-arid grasslands of Inner Mongolia by using this new method.The results show that this new ultrasonic nanoparticles extraction method can obtain high geochemical anomalous value and can also indicate concealed deposits effectively.There are obvious geochemical anomalies of such main ore-forming elements as Cu,Pb,Zn,Ni and Ag over the ore-body and the contrast of abnormity has good relation to the deep orebodies.The contrast of abnormity of shallow ore-body is larger than that of deep ore-body.It is known that ultrasonic nanoparticles extraction can be used to search for concealed deposits on semi-arid grassland-covered region.
作者
王翰
向武
于桑
陈晨
陈启
李启立
谢淑云
徐启东
杨振
Wang Han;Xiang Wu;Yu Sang;Chen Chen;Chen Qi;Li Qi-li;Xie Shu-yun;Xu Qi-dong;Yang Zhen(School of Earth Sciences,China University of Geosciences,Wuhan,Hubei 430074;Yiling Land Resources Bureau,Yichang,Hubei 44310;Faculty of Earth Resources,China University of Geosciences,Wuhan,Hubei 430074)
出处
《地质与勘探》
CAS
CSCD
北大核心
2018年第5期968-978,共11页
Geology and Exploration
基金
中国地质调查局工作项目(编号:12120113088900)
中国地质大学(武汉)研究生承担物化探所基本科研业务项目(编号:WHS201301)资助
关键词
干旱草原覆盖区
超声波提取法
土壤纳米物质
地球化学异常
拜仁达坝铅锌矿区
内蒙古
arid grassland-covered region
ultrasonic nanoparticles extraction method
nanoparticles in soil,geochemical anomaly
Bairendaba Pb-Zn mine
Inner Mongolia
作者简介
[第一作者]王翰(1991年-),男,中国地质大学(武汉)硕士研究生,主要从事勘查地球化学研究。E-mail:ycwh@qq.com;[通讯作者]向武(1968年-),男,中国地质大学(武汉)地球科学学院教授,主要从事应用地球化学方向。E-mail:xiangw@cug.edu.cn。
