作　　者： ; ; ; ;

机构地区： 广州大学数学与信息科学学院

出　　处： 《吉林大学学报（地球科学版）》 2013年第1期87-92,共6页

摘　　要： 探索成矿元素分布的分形特征是揭示矿化富集程度的重要途径之一。运用重标极差分析(R/S)方法,研究了山东大尹格庄金矿-210m中段多勘探线Au品位序列随采样尺度变化的趋势,探讨元素序列的Hurst指数与矿化强度的关系。结果显示:具有不同矿化强度的勘探线Au的Hurst指数存在明显差异,且均大于0.5;矿化连续分布或间断出现的勘探线元素品位序列的Hurst指数大于0.65,表明元素序列具有标度不变性和长相关性,序列的持续强度与矿化程度基本一致,可为区域矿化强度定量识别提供一种新的有效方法。 Abstract： Studying the rules of metallogenic elements fractal distribution is an important method to illustrate the mineralization enrichment. The method of rescaled range analysis （R/S） was applied to study the variation trend with the sampling scale, and to explore into the relationship between Hurst index and mineralized intensity, in the drifts on --210 m level of Dayin^gezhuang gold deposit in the Jiaodong gold province, China. The results show that there exists obvious differences among the Hurst indices of Au grade sequence, greater than 0.5, and the Hurst indeices are greater than 0.65 in parts with continuous mineralization or discontinuous ones concentrated. These indicate that the sequence of the stochastic process is of scale invariant and long-range correlations, and the continued strength of the sequence is consistent with the mineralization, which can provide a new effective method for quantitative identification of regional metallogenic strength.

关 键 词： 成矿元素 分形 标度不变性 重标极差分析法 分析 指数 长相关性 金矿

领　　域： [天文地球] [天文地球]