Content-frequency fractal analysis based on geochemical data with different scales and media:A case study of the Dabaoshan copper polymetallic orefield in Guangdong Province
YAN Ji-Kuan
Guangdong Geophysical Prospecting Party, Guangzhou 510800, China
In this paper, a comparative analysis of content-frequency fractal method was conducted for multi-range, multi-scale and multi-media geochemical field in the Dabaoshan orefield, It is proposed that the ore-forming elements with different dimensions and media basically show the same complex multifractal features, which is the necessary condition for elements to form the large-scale mineral deposit, but not a sufficient condition. The authors hold that the proportion of local anomaly number of samples accounting for all of the samples of ore-forming elements will be exclusively more than 2% reflected in the multi medium-scale data, the proportion is represented by the turning point of the value of continuous multi fractal dimension decrease, but the proportion of the value of elements without causing mineralization may be by far less than 1%. Fitting accuracy significantly influences the understanding of the type and properties of the content-frequency fractal curve.
严己宽. 不同比例尺与介质中化探数据的含量—频数分形研究——以广东大宝山铜多金属矿田为例[J]. 物探与化探, 2016, 40(4): 648-654.
YAN Ji-Kuan. Content-frequency fractal analysis based on geochemical data with different scales and media:A case study of the Dabaoshan copper polymetallic orefield in Guangdong Province. Geophysical and Geochemical Exploration, 2016, 40(4): 648-654.