Mapping structural features of the Wadi Umm Dulfah area using aeromagnetic data

Eldosouky, Ahmed M.; Pham, Luan Thanh; Abdelrahman, Kamal; Fnais, Mohammed S.; Gómez-Ortíz, David

doi:10.1016/j.jksus.2021.101803

Cited by 28 publications

(10 citation statements)

References 34 publications

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“…The high values of gravity anomalies' SA and magnetic anomalies' SA could characterize shallow rocks with high variation in density or magnetic susceptibility. Low amplitude anomaly sources are difficult to recognize among higher amplitude anomaly sources when using HGM, SA and their enhanced versions (Eldosouky et al, 2022). Moreover, Prasad et al (2022) note that the HGM and AS filters cannot delineate deeper bodies and anomalies' amplitudes from the sources located at different depths.…”

Section: Sa G X Y Zmentioning

confidence: 99%

A Comparative Structural Study of Southern Region Shallow Basement of the North-Kivu Province (DR Congo) by Gravity and Magnetic Data Analysis

Muliwavyo,

Musitu

et al. 2023

GEP

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The aim of this study is to characterize the subsoil in the southern region of the North-Kivu province (DR Congo). Gravity and geomagnetic data were used in this study. Five different filters-the horizontal gradient magnitude, the analytic signal, the tilt derivative, the horizontal derivative of tilt derivative and the tilt angle of horizontal gradient-enabled us to delineate the gravity and magnetic anomaly sources present in the shallow subsurface of the study area. The plains of the Rutshuru territory are dominated by sources of weak gravity anomalies and sources of very weak magnetic anomalies located almost in the same places. The southern part of Rutshuru territory and a large part of Masisi territory are underlain by shallow sources of high gravity and magnetic anomalies. Gravity and magnetic anomaly sources are almost identical in the study area. The shallow sources of gravity and magnetic anomalies encountered in our study area are more or less linear and connected. The numerous gravity and magnetic lineaments present in our study region have three major directions: oriented East-West, North-South and North-East-South-West.

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Section: Sa G X Y Zmentioning

confidence: 99%

A Comparative Structural Study of Southern Region Shallow Basement of the North-Kivu Province (DR Congo) by Gravity and Magnetic Data Analysis

Muliwavyo,

Musitu

et al. 2023

GEP

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“…Previously, the limits of sources buried at varying depths on an observational plane were explored using various enhancing filters [35,36]. Several studies have increased the accuracy with which filters detect the boundaries of buried HAZs [3,37,38]. Many edge detection strategies can be applied in order to achieve the goals of such investigations.…”

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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“…Recently, new improved edge detection methods have been introduced to accurately highlight the geological underground and to delineate structural lineaments originating from both shallow and deep geological sources (Pham L. T. et al, 2021;Pham L. T. et al, 2021;Ekwok S. E. et al, 2022;Ekwok et al, 2022a;Eldosouky et al, 2022b;2022c;2022d;2022f;Pham LT. et al, 2022;Nzeuga et al, 2022;Prasad et al, 2022;Pham et al, 2023). The use of highprecision filters, such as the enhanced horizontal gradient amplitude, improved tilt angle, tilt angle of total horizontal gradient, improved theta map, softsign function, logistic function, have emerged (Pham L. T. et al, 2021;Pham et al, 2021 L. T.;Ekwok S. E. et al, 2022;Eldosouky et al, 2022c;2022d).…”

Section: Introductionmentioning

confidence: 99%

Application of enhanced methods of gravity data analysis for mapping the subsurface structure of the bahira basin in Morocco

et al. 2023

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Gravity-based imaging of the subsurface has increased worldwide recently. Improvements in the processing and analysis of gravity data have allowed us to locate the basement surface, map geologic basins, and define structural patterns. In this study, gravity data were analyzed to study the Bahira basin’s underlying geology. The Bahira basin is very important economically. The Ganntour plateau is distinctive due to the importance of the phosphate mining resources. Using gravity data, we mapped the subsurface and determined the underlying structural patterns that affect the study area. In this study, we used several techniques to edge detection including Total horizontal derivative (THDR), first vertical derivative (FVD), tilt derivative (TDR), and its horizontal derivative (THDR_TDR) methods. Accordingly, the geological history of the Bahira basin suggests that the main lineaments/faults trends are NE-SW, NW-SE, ENE-WSW, and WNW-ESE. The 3D Euler deconvolution showed the depth and location of lineaments/faults, and matched edge detection results. The eastern Bahira basin’s sedimentary layer is 2–8 km deeper according to the Euler technique. Two-dimensional forward modeling along three profiles in the Bahira basin revealed a horst-graben basement structure. The outcomes of this study improved the subsurface topographical variations of the Bahira Basin. The information collected so far can help future studies in the area.

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Mapping structural features of the Wadi Umm Dulfah area using aeromagnetic data

Cited by 28 publications

References 34 publications

A Comparative Structural Study of Southern Region Shallow Basement of the North-Kivu Province (DR Congo) by Gravity and Magnetic Data Analysis

A Comparative Structural Study of Southern Region Shallow Basement of the North-Kivu Province (DR Congo) by Gravity and Magnetic Data Analysis

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

Application of enhanced methods of gravity data analysis for mapping the subsurface structure of the bahira basin in Morocco

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