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The relationship between Fe mineralization and the basement linear structures using multi fractal modelling in the Bafgh area, central Iran

Document Type : Original Research Paper

Authors

1 department of geology, fundamental sciences, Science and Research Branch, Azad university , tehran, Iran

2 3Department of Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran

3 Department of oil Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran

4 Assistant Professor, Fundamental science, Mahallat branch Islamic Azad University, Tehran, Iran

Abstract

The multifractal modelling is an effective approach for separation of geological
and mineralized zones from the background. Following cases are addressed
in this study; Concentration-Distance to Major Fault structures (C-DMF) fractal model
 and distribution of the known Fe indices/mines in the Bafgh area to distinguish the Fe
mineralization based on their distance to basement faults,  surface faults and master
 joints, using remote sensing information, airborne geophysics information and field
surveys. Application of the C-DMF model for the classification of Fe mineralization
 in the Esfordi and Behabad 1: 100,000 sheets reveals that the main Fe mineralizations
have a strong correlation with their distance to the major and basement faults.
Accordingly, the distances of Fe mineralization that has the grades upper than 55% in
 this area )43%≤S≤60%), are lower than 1 km related to basement faults, while such
distance for this threshold is 2344<DMJ≤1778 meter for the master joint and also for
the faults of 1:100,000 Behabad and Esfordi geology sheets in 43%S≤60% threshold
 (for the graides) the distances are 3162<DGF≤4365 meter to the faults. This indicates a
positive correlation between Fe mineralization and distance to the basement faults.
On the other words, the proximity evidence for the Precambrian high grades Fe
 deposits related to basement faults indicates syn-rifting tectonic events. This C-DMF
 fractal model can be used in exploration of the magmatic and hydrothermal ore
deposits.

Keywords

References
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Scientific Quarterly Journal of Geosciences
Volume 27, Issue 108
September 2018
Pages 181-190
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