用空隙法识别矿化强度  

Identification of Mineralization Intensity Using Lacunarity Analysis

作　　者：赵婕[1,2,3] 王庆飞[1,2] 张铎毓[3] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [2]中国地质大学岩石圈构造、深部过程及探测技术教育部重点实验室,北京100083 [3]中国地质大学信息工程学院,北京100083

出　　处：《地质与勘探》2010年第4期733-740,共8页Geology and Exploration

基　　金：国家自然科学基金项目(编号:40572063);教育部跨世纪人才培养计划;111工程(编号:B07011);高校长江学者和创新团队发展计划(PCSIRT);中国地质大学(北京)大学生学术科技学术基金资助

摘　　要：勘探槽中的矿化强度是由矿体品位分布决定,特别是高品位的积聚可以由空隙法量化显示。本文以中国山东省胶东金矿区上庄金矿为例,运用空隙法判定矿体的矿化强度,讨论各勘探槽矿化品位的空间分布。研究结果表明低空隙值一般反映大致均一的品位分布,而高空隙值则与大于边界品位的高品位值密切相关,同时,高空隙值的分布一般反映出的是发育较好的矿体,而反之,低空隙值的分布则反映出的是低品位的矿体或者是非矿体。一般来说,空隙值能反映出高品位空间积聚的程度,所以能够作为评价矿体矿化强度的一个潜力指标。且与传统矿化强度判别方法相比,空隙法除了能反映矿化强度以外,对矿体的空间分布也能如实呈现。The mineralization intensity in the exploration trench is determined by the distribution of the grades, especially the clumpness of the high grades of ore bodies, which can be quantified by the lacunarity method. Taking the Shangzhuang gold ore deposit in the gold mine area in eastern Shandong Province as an example, using the lacunarity method, the spatial distribution of grades in different trenches is studied. The result shows that the low lacunar- ity value usually reflects a nearly uniform distribution of the grades, whereas the high lacunarity value is associated with a clumped distribution of the high grades beyond the cut-off corresponding to the well developed orebody. The values of the lacnnarity generally reflect the degree of the spatial concentration of the high grades and can serve as a potential index for appraisal of the mineralization intensity.

关 键 词：空隙值 聚集分布 胶东 

分 类 号：P628[天文地球—地质矿产勘探]