Fractal characteristics of fractures in Jiuwandashan area and their geological significance

Abstract：The fractal structure of the fracture makes it possible to give a quantitative description. The fractal dimension value of the fracture can indicate the deposit location and the migration of ore-forming fluids. The high fractal dimension value can suggest the intense tectonic movement favorable for the activation of elements, the migration and concentration of ore-forming fluids, and the formation of large and super-large ore deposits. By means of multi-band remote sensing images in combination with the regional geological background, the author interpreted the fractures and made a quantitative investigation based on the theory of fractal geometry. The results show that there exists a high fractal dimension value of fracture in Jiuwandashan area, which shows the complicated fracture belt and the intense tectonic movement. Nevertheless, the fractal dimension value of fracture is relatively low in Yuanbaoshan area. In addition, the fractal dimension value of the northeast fracture is higher than that of the northwest fracture, suggesting the dominating property of the northeast fracture in this area, which is consistent with the regional tectonic characteristics.