Source edge detection (SED) of aeromagnetic data: synthetic examples and a case study from Haimur area, south Eastern Desert, Egypt

Eldosouky, Ahmed M.; Saada, Saada Ahmed

doi:10.1007/s12517-020-05653-8

Cited by 29 publications

(5 citation statements)

References 19 publications

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“…Gravity and magnetic data are shortly interpreted during the presentation and enhancement of the potential data (Figs. 3,4,5,6,7,8,9) depending on the geophysical concepts and basics. Here, further (detailed) structural interpretation for the aeromagnetic and gravity results, particularly the tectonic trends of the interpreted structures and their densities, was contributed.…”

Section: Discussion Of the Potential Data Results In Relation To The ...mentioning

confidence: 99%

“…its interment depth, lateral extent and amplitude of the physical feature variation, is the ultimate intention of a potential (magnetic and gravity) field (PF) survey 1 . Recently, PF data have become prime tools in regional tectonic prospects [2][3][4] , petroleum exploration 5,6 and mineralization prospects [7][8][9][10] . Many techniques can be utilized in an automated mode to map the spatial distribution of physical parameters representing the sources in order to decipher the large scale structures.…”

Section: Large-scale Geological Structures Of the Egyptian Nubian Shieldmentioning

confidence: 99%

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Large-scale geological structures of the Egyptian Nubian Shield

Hamimi

Eldosouky

Hagag

et al. 2023

Sci Rep

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Integration of potential field- and structural data make it possible to trace surface and subsurface large-scale geological structures of the Egyptian Nubian Shield (ENS). Obtained results indicate that the Northern Eastern Desert (NED) of the ENS is dominated by relatively younger (c. 580 Ma) E–W and NE–SW trending extensional structures that were controlled by the evolution and retreat of the Cadomian Arc. Density of such extensional structures increases with depth as displayed by the potential data. The prevailing structural trends in the Central Eastern Desert (CED) are NW–SE and WNW–ESE. Both trends are highly prompted by the timing of deformation upon the Najd Fault System, and are themselves dissected by a relatively younger NE–SW shearing trend. Lineament density in the CED is subordinate for both subsurface and near surface structures. The South Eastern Desert exhibits compressional and extrusion-related structures of two main prominent trends; WNW-to-NW (to the western part) and the N-, NNE- to NE (to the eastern part). The previously mentioned Neoproterozoic trends are remarkably influenced by the Oligocene–Miocene Red Sea-Gulf of Suez rift related fractures in the vicinity of the rift shoulder. The remarkable change in trends and densities of structural trends, especially in the NED, is interpreted in terms of concealing of the older structures by the younger extensional structures which in turns reflect an N-ward progressive deformation in the entire ENS. Gravity data are more appropriate in delineating the structural trends compared to the magnetic data which are largely affected by lithological variations and/or alteration zones and magnetic mineralogy.

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Section: Discussion Of the Potential Data Results In Relation To The ...mentioning

confidence: 99%

Section: Large-scale Geological Structures Of the Egyptian Nubian Shieldmentioning

confidence: 99%

Large-scale geological structures of the Egyptian Nubian Shield

Hamimi

Eldosouky

Hagag

et al. 2023

Sci Rep

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“…Minerals 2023, 13, x FOR PEER REVIEW 3 of 23 [25][26][27][28][29]. Mineral exploration and structural studies can use edge detection methods to delineate the boundaries of subsurface structures [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Utilizing Remote Sensing and Satellite-Based Bouguer Gravity data to Predict Potential Sites of Hydrothermal Minerals and Gold Deposits in Central Saudi Arabia

et al. 2023

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This article aims to aid in exploring and forecasting hydrothermal minerals and gold deposits in Central Saudi Arabia (SA), with a focus on structural contexts. Remote sensing (RS) and satellite-based Bouguer gravity (SBG) data were integrated in order to create a mineral prediction map for the researched location. Data from the Landsat Operational Land Imager (OLI) and Shuttle Radar Topography Mission (SRTM) were transformed and enhanced using a variety of approaches. The delineation of hydrothermal alteration zones (HAZs) and highlighting of structural discontinuities in the OLI data were made possible using band ratios and oriented principal component analysis (PCA). Additionally, the underlying structural features were successfully exposed by processing the SBG using a variety of edge detection techniques, like the analytical signal (AS), total horizontal derivative (THD), tilt angle (TA), horizontal tilt angle (TDX), theta map (TM), horizontal derivative of the tilt derivative (HD_TDR), horizontal gradient of the tilt angle (HGTA), tilt angle of the analytical signal (TAAS), and soft sign function (SF). As a result, more prominent lineaments were found in the NW–SE, NNW–SSE, NE–SW, and NNE–SSW directions than in the N–S and E–W directions. The GIS incorporated surface/subsurface geological structure density maps with zones of hydrothermal alteration. It was found that the lineaments derived from the analysis of the RS and SBG data were more in line with the HAZs, which demonstrated the common connection between alteration zones and deep lineaments. The findings revealed a mineral prediction map with extremely low to extremely high probabilities. Overall, combining RS and SBG data effectively identified probable mineralization sites associated with hydrothermal processes and made it easier to create this study’s final predictive mineralization map.

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“…Separating the deep from the shallow sources of potential field anomalies and recognizing their edges are crucial in geophysics (Eldosouky, 2019;Pham et al, 2021a;Eldosouky and Mohamed, 2021;Eldosouky et al, 2022d). As a result, edge detection is an important analysis direction in pattern recognition for mapping structures, geologic contacts, and ore deposits (Oruç, 2011;Arisoy and Dikmen, 2013;Ibraheem et al, 2018;Eldosouky and Saada, 2020;Pham et al, 2020;Pham et al, 2021a;Saada et al, 2021a;Pham et al, 2021b;Saada et al, 2021b;Pham et al, 2021c;Pham et al, 2021d;Melouah et al, 2021;Eldosouky et al, 2022a;Eldosouky et al, 2022b;Eldosouky et al, 2022c;Sehsah and Eldosouky, 2022).…”

Section: Introductionmentioning

confidence: 99%

Integrated Geophysical Assessment of Groundwater Potential in Southwestern Saudi Arabia

et al. 2022

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Saudi Arabia is seeking fresh groundwater resources to face the increase in anthropogenic activities. The groundwater storage variations and occurrence were investigated and the surface and subsurface structures influencing the groundwater resources in the research area were defined using a combined study of Gravity Recovery and Climate Experiment, aeromagnetic data, and electrical resistivity data with other relevant datasets. Results are: The groundwater storage fluctuation is calculated at −0.34 ± 0.01 mm/yr during the period 04/2002-12/2021. The area is receiving an average annual rainfall rate of 117.6 mm during the period 2002 to 2019. Three structural trends, defined in the directions of NS, NNW, and NNE are cutting the sedimentary cover and the basement rocks. The sedimentary cover ranges from 0 to 1.2 km thick. Vertical electrical sounding results indicate three main geoelectric layers: the surface geoelectrical layer of higher resistivity values (428-9626 Ω. m) is made up of unconsolidated Quaternary sediments; the water-bearing layer of saturated sands with a resistivity range between 5.1 and 153 Ω. m and with depths vary from 1 to 94 m, and highly fractured basement rocks with resistivity values ranging from 813 to 6030 Ω. m. The integrated results are useful in providing a comprehensive image of the study area’s surface and subsurface structures, as well as groundwater potential in the southwestern part of Saudi Arabia. Our integrated approach provides a reproducible model for assessing groundwater potential in arid and semiarid areas.

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Source edge detection (SED) of aeromagnetic data: synthetic examples and a case study from Haimur area, south Eastern Desert, Egypt

Cited by 29 publications

References 19 publications

Large-scale geological structures of the Egyptian Nubian Shield

Large-scale geological structures of the Egyptian Nubian Shield

Utilizing Remote Sensing and Satellite-Based Bouguer Gravity data to Predict Potential Sites of Hydrothermal Minerals and Gold Deposits in Central Saudi Arabia

Integrated Geophysical Assessment of Groundwater Potential in Southwestern Saudi Arabia

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