摘要
为了解粤北刘家山地区地球化学元素的分布对成矿作用的影响,利用Q-Q图和聚类分析探讨了元素的空间分布规律,然后运用多重分形方法研究了该区域1573个水系沉积物样品中与成矿密切相关的12种元素的分形分布规律。传统方法采用背景值加两倍方差方法提取异常,采用C-A分形法分离背景和异常,并计算各元素分形维数谱函数。结果表明,C-A分形法可以更有效地研究地球化学元素异常值的分布和富集规律。C-A分形法将统计方法中元素含量和频率分布和异常空间形态等有机的结合,对区分地球化学背景和与矿化有关的异常效果更好,为该地区元素的成矿潜力评价提供重要线索。
In order to study the influence of distribution of geochemical elements on mineralization, this study uses Q-Q plot and cluster analysis to discuss the space distribution of elements in Liujiashan of northern Guangdong province. 12 elements related to mineralization were analyzed on 1573 drainage sedi-ment samples from Liujiashan to recognize their fractal distribution. In contrast to traditional anomaly rec- ognition method with iterative mean _＋ tr, this paper uses C-A fractal to separate anomalies from their background values, and calculates muhifractal spectrum function. The C-A fractal analysis unites element content and frequency distribution of statistic method and singularity space configuration. It is useful for distinguishing chemical background and anomalous values which are relate to mineralization, and can provide significant clue for mineral potential evaluation.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第2期119-124,共6页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
全国矿产资源潜力评价资助项目([2007]038-01-18)
国家自然科学基金资助项目(41004051)
钦杭成矿带南段庞西垌地区矿产远景调查基金资助项目(1212010071012)
关键词
地球化学
多重分形方法
C-A分形法
异常值
粤北刘家山
geochemical
multifractal
C-A fractal analysis
anomalous values
Liujiashan of NorthernGuangdong
