Episodes 2022; 45(3): 223-237
Published online September 1, 2022
Copyright © International Union of Geological Sciences.
Ahmad Adib1*, Masoumeh Nabilou2, Peyman Afzal3
1Department of Petroleum and Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
2Geological and Environmental Research Center of Zemin Kav, Tehran, Iran
3Department of Petroleum and Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
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In this paper, a Concentration-Distance to Magnetic Faults (C-DMF) fractal model was applied to distinguish Fe, Cu and REEs mineralized zones based on their distance to basement faults derived via airborne geophysical data and field survey maps in the Tarom region at the western Alborz-Azerbaijan belt, NW Iran. The application of the C-DMF model was utilized for mineralization classification in the Tarom 1:100,000 sheet which reveals that the main Fe, Cu and REEs mineralization have an inverse correlation with their distances to magnetic faults (fault lineaments). The Cu ores within acidic rocks and the Fe/ REEs mineralization within intermediated rocks are located in the Northern and Southern parts of the Tarom region, respectively. Furthermore, the basement fault and intrusive rocks have overlapped and they have important roles for these metallic deposits/occurrences. Based on the CDMF log-log plots, Fe, REEs and Cu high-grade mineralization values are larger than 48.31%, and 3.8%, with respective distances of 451 and 732 m to the nearest magnetic faults. The results obtained from the fractal modeling indicate a positive relationship between Fe, REEs mineralization and the basement faults. Consequently, Cu mineralization has a weak relationship to faults in comparison with Fe and REEs.