分形模型在黑龙江漠河地区金矿成矿预测中的应用

以漠河地区4 830个样品的化探数据为基础，采用“Ｃ-Ａ”(含量-面积)分形模型，通过对Au、Cu、Zn、Pb分维计算，揭示出各元素空间分布的分形结构特征和无标度区范围，得出Au、Cu、Zn、Pb元素化探异常下限值分别为3.1×10^-9、28.1×10^-6、114.1×10^-6、28.4×10^-6，圈定出33个金异常区。根据金异常区与主要地质要素及Cu、Zn、Pb异常区的关系，确定远景区分布于白卡鲁山－长缨站、笔架山－马林林场、蒙克山－防火站、富乐－阿木鲁山，共8个区域具有金矿找矿前景。预测结果表明，5个已知金矿化点落入其中2个预测区内，其余6个预测区中呈无已知矿化点,但具有找矿前景。

Application of Fractal Model in Gold Prospecting in Mohe Area,Heilongjiang Province

The "C-A"(concentration versus area) fractal model has been used in the fractal calculation of Au,Cu,Zn and Pb elements in 4 830 geochemical samples from Mohe area.The fractal characteristics of elements’ space distribution and non-scale range are identified.The elements’ anomalies lower limit values of Au,Cu,Zn and Pb are 3.1×10-9,28.1×10-6,114.1×10-6,28.4×10-6 respectively,and 33 Au anomalies have been delineated.According to the relationship among Au anomalies,the associated geological factors and Cu,Zn,Pb anomalies,it’s concluded that 8 regions have gold prospecting potentials.They are distributed in Baikalu Mountain-Changying station,Bijia Mountain-Malin forestry centre,Mengke Mountain-Fire station and Fule-Amulu Mountain.Five known gold mineralization sites are located in the forecasted prospecting areas.Moreover,six prospecting areas have metallogenic potential in spite of no known gold mineralization.