湖南宝山铜铅锌多金属矿床元素分形特征及其地质意义

Elementfractal characteristics and geological significance of Baoshan Cu-Pb-Zn polymetallic deposit,Hunan province

随着分形理论的建立与发展,应用分形理论研究矿床分布及元素的分布与富集规律已经成为研究成矿作用的一个有力的新工具。本文利用宝山铜铅锌多金属矿床钻孔及井下采集样品测试分析结果,选取Cu、Mo、Pb、Zn、Ag五个成矿元素,运用含量—数量模型,建立元素的分形模型。分形方法可以有效的分析元素地球化学背景场,根据元素分形分维值可以从元素空间富集的角度分析元素富集的阶段。研究结果表明,宝山铜铅锌多金属矿床Cu、Pb、Zn元素有两个成矿阶段,Mo、Ag元素则有一个成矿阶段。

Along with the arising and developing of fractal theory,it has become a new powerful tool on study of Mineralization through fractal analyses of distribution of deposits and element.In this paper,by using the drilling and underground sampling samples of Baoshan copper-lead-zinc polymetallic ore deposit,the test results are analyzed.Five metallogenic elements,Cu,Mo,Pb,Zn and Ag,are selected,and the fractal model of C-N is established by using the content quantity model.The method of fractal analysis can effectively analyze the geochemical background field of elements.According to the fractal dimension value of elements,the enrichment stage of elements can be analyzed from the point of view of the enrichment of space elements.The results show that the Cu,Pb and Zn elements of the Baoshan copper-lead-zinc polymetallic deposit have two metallogenic stages,while the Mo and Ag elements have onemetallogenic stage.