Structural and mineral exploration study at the transition zone between the North and the Central Eastern Desert, Egypt, using airborne magnetic and gamma-ray spectrometric data

Ibraheem, Ismael M.; El-Husseiny, Ahmed A.; Othman, Amal

doi:10.1080/10106049.2022.2076915

Cited by 6 publications

(1 citation statement)

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“…As a result, they are known as equivalent in uranium (eU) and equivalent in thorium (eTh). However, the isotopic decay peak of 40 K is used to directly measure potassium (Ibraheem et al., 2022). The methodology adopted to process the created database consists of three steps (Figure 3).…”

Section: Methodsmentioning

confidence: 99%

Mapping and litho‐geophysical classification of potential mining areas by spatial remote sensing and helicopter‐borne gamma‐ray spectrometry (Tikirt, Anti‐Atlas, Morocco)

Achkouch

Miftah

Ouchchen

et al. 2023

Geophysical Prospecting

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The primary focus of this study is to explore the potential mineral areas. Advanced Spaceborne Thermal Emission and Reflection Radiometer images and radiometric data were combined in the Tikirt region to map hydrothermal alteration zones associated with mineralized deposits. Advanced Spaceborne Thermal Emission and Reflection Radiometer images were analysed using band ratios, principal component analysis and a fuzzy logic model to discover argillic, phyllic, propylitic and iron oxide alterations and to generate a mineral prospectivity map. In addition, mono‐element maps of radiometric elements (K in %, eU in ppm, eTh in ppm) and their behaviour in the ternary image have been elaborated to determine the concentrations of radiometric elements and the variation of radiometric character along the exposed terrains. The F parameter was calculated to target high potassium concentration areas associated with hydrothermal alteration zones. Combining the two methods highlighted four hydrothermal alteration zones considered very promising from a mining point of view. These zones are generally linked to the magma bodies affected by normal faults and exhibit a clear spatial correlation with mineral occurrences.

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Section: Methodsmentioning

confidence: 99%

Mapping and litho‐geophysical classification of potential mining areas by spatial remote sensing and helicopter‐borne gamma‐ray spectrometry (Tikirt, Anti‐Atlas, Morocco)

Achkouch

Miftah

Ouchchen

et al. 2023

Geophysical Prospecting

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A New Edge Enhancement Filter for the Interpretation of Magnetic Field Data

Ibraheem

Tezkan

Ghazala

et al. 2023

Pure Appl. Geophys.

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One of the main goals of the interpretation of magnetic data is the imaging of the boundaries of subsurface structures. In this study, a new edge detector called improved horizontal tilt angle (impTDX) has been introduced and tested on synthetic and measured magnetic data. The filter exhibits high efficiency not only in detecting the boundaries of the sources, but also in determining magnetic sources from different depth levels. The impTDX filter produces more precise and sharper boundaries, increases the discernibility of neighboring anomalies, has the advantage of avoiding creation of false edges, and is less sensitive to noise compared to other known filters, which minimizes the uncertainty in the data interpretation. The proposed filter has been applied to aeromagnetic data from Sohag, Egypt. It highlighted the subsurface magnetic structures with high resolution where a structural map showing normal faults demarcating the subsurface causative horsts and grabens was constructed. This map confirms that the Nile grabens are of tectonic origin related to the opening of the Red Sea. Our findings indicate that the proposed filter can be considered as a valuable tool in mapping of subsurface magnetic structures.

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Origin of El-Maghara Anticlines, North Sinai Peninsula, Egypt: Insights from Gravity Data Interpretation Using Edge Detection Filters

Othman,

Ibraheem

2023

Arab J Sci Eng

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The gravity data of Gebel El-Maghara area and its surrounding region in northern Sinai Peninsula, Egypt have been subjected to high precision edge detection filters in order to evaluate the structural and tectonic settings of the study area. Various traditional and modern edge detection filters were tested on synthetic gravity data and then the most successful filters in detection the boundaries of the causative bodies have been used to accomplish the study's objectives. By examining the power spectrum of the gravity data, three gravity maps were generated using low-pass, band-pass and high-pass filters, respectively, representing deep, intermediate and shallow gravity anomalies. The STDR filter and its total horizontal derivative were applied to these gravity maps to image the causative structural features (faults and contacts) and construct structural maps at these different depths. The findings demonstrate that the major trend of faults and contacts at deep depths predominantly aligns along the WNW–ESE direction, while at shallow depths, the main orientation is observed along the NE–SW direction. It is worth noting that the trend of structures at shallow depths demonstrates a good agreement with the structural trends derived from both surface structural map and Landsat images. This trend disparity supports the hypothesis that the formation of the anticlines in the study area is linked to thin-skinned tectonic processes associated with the Syrian Arc system.

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Structural and mineral exploration study at the transition zone between the North and the Central Eastern Desert, Egypt, using airborne magnetic and gamma-ray spectrometric data

Cited by 6 publications

References 100 publications

Mapping and litho‐geophysical classification of potential mining areas by spatial remote sensing and helicopter‐borne gamma‐ray spectrometry (Tikirt, Anti‐Atlas, Morocco)

Mapping and litho‐geophysical classification of potential mining areas by spatial remote sensing and helicopter‐borne gamma‐ray spectrometry (Tikirt, Anti‐Atlas, Morocco)

A New Edge Enhancement Filter for the Interpretation of Magnetic Field Data

Origin of El-Maghara Anticlines, North Sinai Peninsula, Egypt: Insights from Gravity Data Interpretation Using Edge Detection Filters

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