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Published online August 15, 2021

Copyright © International Union of Geological Sciences.

Relationship between Fe-Cu-REEs mineralization and magnetic basement faults using multifractal modeling in Tarom region, NW Iran

by Ahmad Adib1*, Masoumeh Nabilou2, and 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

Correspondence to:*E-mail: adib@azad.ac.ir

Received: May 16, 2021; Revised: July 12, 2021; Accepted: July 12, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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.