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A Novel Magnetic Interpretational Perspective on Charmaleh Iron Deposit Through Improved Edge Detection Techniques and 3D Inversion Approaches

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Abstract

Edge detection is an important part of interpreting potential field geophysics data. It helps better recognition of magnetic anomaly features such as superficial position and shape. Many edge detection methods have been presented; however, due to the natural complexity of subsurface features, only a few of the processing techniques might be accurate. Because, in practical cases, multi-dimensional precision is essential, using other methodologies along with edge detection can be useful. As a new research, this study utilized the 3D inverse modeling procedure as a confirmation and completion tool for combining both subsurface magnetic susceptibility distribution and surface anomaly projection. This research focused on investigating simultaneous application of 3D inversion and edge-detecting methods that provide an accurate perspective view of sought sources with high magnetic susceptible properties. To perform the mentioned task, along with the definition of two new edge detection filters, some beneficial edge detection filters were implemented on synthetic data. Then, these filters were applied to the Charmaleh Iron deposit magnetic data to obtain a valid anomaly edge perimeter. Subsequently, a 3D inverse modeling scheme was run on the data to investigate the magnetic susceptibility properties of surface and underground structures. In order to validate our edge detection results and to achieve a proper interpretation, the utilized edge detectors and the inverted model results were overlaid, compared, and depicted concurrently. Drilling operations were also conducted within the jointly achieved favorable zones, which were in line with the research findings. Conclusively, it can be stated that joint consideration of the mentioned approaches can be advantageous attitude toward accurate interpretation of environments with highly magnetic anomalies.

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Acknowledgments

The authors would like to express their sincere thanks to the  Department of Minining and Metallurgical Engineering, Amirkabir University of Technology  and the School of Mining Engineering, University of Tehran for all supports and utilities provided freely for fulfillment of this research. We also thank Prof. Carranza and wish to thank the anonymous referees for providing many insightful remarks that considerably helped us to improve the work. Finally, CEO of Madan Sanat Ruidar Company, Mr Farzad Safaei Zadeh is appreciated for financial support of field survey.

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Authors and Affiliations

  1. Institute of Geophysics, University of Tehran, Tehran, Iran

    Seyed Masoud Ghiasi & Seyed Hossein Hosseini

  2. Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran

    Ahmad Afshar

  3. School of Mining Engineering, College of Engineering, University of Tehran, Tehran, Iran

    Maysam Abedi

Authors
  1. Seyed Masoud Ghiasi
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  2. Seyed Hossein Hosseini
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  3. Ahmad Afshar
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  4. Maysam Abedi
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Correspondence to Ahmad Afshar.

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Ghiasi, S.M., Hosseini, S.H., Afshar, A. et al. A Novel Magnetic Interpretational Perspective on Charmaleh Iron Deposit Through Improved Edge Detection Techniques and 3D Inversion Approaches. Nat Resour Res 32, 147–170 (2023). https://doi.org/10.1007/s11053-022-10135-7

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  • DOI: https://doi.org/10.1007/s11053-022-10135-7

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