摘要
以云南某地1∶20万区域地球化学为例,选取其中的Ag、Cd、Co、Cu、Mn、Mo、Ni、Pb、Zn、Sn、W等11个数据,运用含量-面积法对上述元素分析,建立元素的C-A分形模型,研究表明,元素在空间分布上服从分形分布特征,可以通过不同的分维值来刻画;分形方法可以有效的分析地球化学的背景场与异常场,根据元素异常场的分维值,可以从元素空间富集角度对地球化学元素进行分类,研究表明,Cu、Sn、Ag、Pb、Zn、Cd、Mn可以为本区的主要成矿元素,具有找矿潜力。
Eleven regional geochemical data in Yunan Ag, Cd, Co, Cu, Mn, Mo, Ni, Pb, Zn, Sn, W, etc. with scale 1：200000 are selected and analyzed in the application of Concentration-Area （C-A） fractal method, the C-A fractal models are built for each element. Studies show that spatial distribution of elements conforms to the fractal distribution characteristics, which can be illustrated by different fractal dimensions. Fractal analysis can be used to separate background field from anomalous field effectively. Given the fractal dimension of anomalous field, geochemical elements can be classified according to spatial enrichment degree of elements. Research also shows that Cu, Sn, Ag, Pb, Zn, Cd, Mn are the main ore-forming elements and have the potential of assisting in searching minerals.
出处
《华南地震》
2012年第3期75-80,共6页
South China Journal of Seismology
