Multifractal characteristics of gold grades series in the Dayingezhuang Deposit, Jiaodong Gold Province, China
Multifractal characteristics of gold grades series in the Dayingezhuang Deposit, Jiaodong Gold Province, China
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DOI：
10.1007/s12145-015-0218-2
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发表时间：
2015-04
影响因子：
2.8
通讯作者：
L. Wan;Y. Q. Zhu;X. Deng
中科院分区：
文献类型：
--
作者：
L. Wan;Y. Q. Zhu;X. Deng
本文应用多重分维除趋势波动分析方法，研究了胶东大英各庄金矿床金品位序列的多重分维特征。多重分维参数和多重分形谱的结果表明，金品位序列具有多重分维标度和不同的长程相关性。多重分形谱的不对称性表明，矿化强烈的漂移带金品位系列的多重分形谱右侧分支的范围大于左侧分支的范围，而弱矿化带的金品位系列的多重分形谱的形状则相反，这表明多重分形谱的形状可能为成矿潜力研究提供方向。此外，我们还分析了多重分形性的来源，量化了两个因素的贡献，即长期相关性和广义肥尾分布。我们发现，金品位序列的多重分维结构是由长程相关性和厚尾概率密度函数共同作用的结果，但前者对后者的贡献更大。
In the paper, the multifractal detrended fluctuation analysis is used to investigate the multifractal characteristics of gold grades series in the Dayingezhuang gold deposit, Jiaodong province, China. Results obtained from the multifractal parameters and multifractal spectra show that the gold grades series exhibit multifractal scaling and different long-range correlations. The asymmetry of multifractal spectrum shows that the range of the right-side branches of the multifractal spectrum is larger than that of the left-side branches for the gold grades series of intensely mineralized drifts, but the gold grades series of the barely mineralized zones is on the contrary, which indicates that the shape of of multifractal spectrum may provide directions in the study of ore-forming potential. Moreover, we analyze the sources of multifractality quantifying the contributions of two factors, the long-range correlations and the broad fat-tail distributions. We find that the multifractality structure of gold grades series is due to both long-range correlation and the fat-tail probability density function, but the former is greater attributed to the latter.