The Relationship between Fe Mineralization and Magnetic Basement Faults using Multifractal Modeling in the Esfordi and Behabad Areas(BMD), Central Iran  

作　　者：Masoumeh NABILOU Peyman AFZAL Mehran ARIAN Ahmad ADIB Hassan KHEYROLLAHI Mohammad FOUDAZI Parviz ANSARIRAD 

机构地区：[1]Department of Earth Sciences,Science and Research Branch,Islamic Azad University,Tehran,Iran [2]Department of Petroleum and Mining Engineering,South Tehran Branch,Islamic Azad University,Tehran,Iran [3]Division of Airborne Geophysics,Explorartion Department,Geological Survey of Iran,Tehran,Iran [4]Department of Geology,Eslamshar Branch,Islamic Azad University,Tehran,Iran [5]Farhangian University,Tehran,Iran

出　　处：《Acta Geologica Sinica(English Edition)》2022年第2期591-606,共16页地质学报（英文版）

摘　　要：Multifractal modeling is a mathematical method for the separation of a high potential mineralized background from a non-mineralized background. The Concentration-Distance to Fault structures(C-DF) fractal model and the distribution of the known iron(Fe) deposits/mines seen in the Esfordi and Behabad 1:100,000 sheets from the Bafq region of central Iran are used to distinguish Fe mineralization based on their distance to magnetic basement structures and surface faults, separately, using airborne geophysical data and field surveys. Application of the C-DF fractal model for the classification of Fe mineralizations in the Esfordi and Behabad areas reveals that the main ones show a correlation with their distance from magnetic basement structures. Accordingly, the distances of Fe mineralizations with grades of Fe higher than 55%(43% < Fe ≤ 60%) are located at a distance of less than 1 km, whereas for surfacial faults with grades of 43% ≤ Fe ≤ 60%, the distances are 3162< DF ≤ 4365 m from the faults. Thus, there is a positive relationship between Fe mineralization and magnetic basement structures. Also, the proximity evidence of Precambrian high-grade Fe mineralization related to magnetic basement structures indicates syn-rifting tectonic events. Finally, this C-DF fractal model can be used for exploration of magmatic and hydrothermal ore deposits.

关 键 词：Fe mineralization PROSPECTING Concentration-Distance to Fault model(C-DF) fractals Bafq Iran 

分 类 号：P618.31[天文地球—矿床学]