Geological and geophysical investigations to delineate the subsurface extension and the geological setting of Al Ji’lani layered intrusion and its mineralization potentiality, Ad Dawadimi District, Kingdom of Saudi Arabia

El-Sawy, E. K.; El-Dougdoug, Abdel Moneim A.; Gobashy, Mohamed

doi:10.1007/s12517-017-3368-3

Cited by 20 publications

(7 citation statements)

References 35 publications

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“…The conformable calcareous Ar-Ridaniyah, arenaceous, and semipelitic Abt formations are the oldest rocks deposited in a transgressive subsiding likely marine environment during the Precambrian, Figure 2 . The AdDawadmi governorate is considered to contain the following four main geologic units [36][37][38]: A granitic batholith makes up over 80% of Moreover, pasture-based livestock farming (primarily camels, goats, and sheep), poultry farms, and aquaculture are widely spread [9,34]. The climate of the Ad-Dawadmi governorate is ordinarily hyper-arid.…”

Section: Geological Settingsmentioning

confidence: 99%

“…The conformable calcareous Ar-Ridaniyah, arenaceous, and semipelitic Abt formations are the oldest rocks deposited in a transgressive subsiding likely marine environment during the Precambrian, Figure 2. The AdDawadmi governorate is considered to contain the following four main geologic units [36][37][38]: A granitic batholith makes up over 80% of the district and constitutes three granitic varieties. Two-layered basic intrusions occur in the district, a southern one, AlJe'alani, an area of about 50 km 2 , and a northern one, Arja, covering 9 km 2 .…”

Section: Geological Settingsmentioning

confidence: 99%

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Integrating GIS, Statistical, Hydrogeochemical Modeling and Graphical Approaches for Hydrogeochemical Evaluation of Ad-Dawadmi Ground Water, Saudi Arabia: Status and Implications of Evaporation and Rock–Water Interactions

et al. 2023

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Ensuring sustainability of groundwater (GW) resources requires understanding the interplaying factors in the hydrogeochemical evolution of the system (cause and effect relationships), which is the subject of the current work concerning the groundwater resource in a hyperarid region, namely, AdDawadmi, Saudi Arabia. Integration of geographical information system (GIS), statistical, graphical, and geochemical modeling approaches are adopted to achieve the study’s design intentions. Slicing the study area on a spatial basis helped yield insights into major constituents’ variation trends using the graphical methods that lack spatial representation capabilities, such as Piper, radial, and Durov plots. Localities of higher salinities, NO3−, SO42−, Cl−, Na+, and Ca2+ are remarkable, indicating the effects of localized and point source activities and evaporation-driven concentrating processes rather than lithology supported by the largest regression and correlation coefficients for Cl−, Na+, and SO42. Many interacting processes are identified: evaporation, vicious salinization cycle (VSC), rock weathering, ion exchange, and geomorphological-driven flow. Hydrogeochemical modeling using the Visual MINTEQ program concludes that concentration-driven evaporation might lead to the precipitation of significant SO42− and Ca2+ along with CaCO3 saturation. Such processes, coupled with the ion exchange, would greatly impact the GW chemical composition and affect the aquifer and soil properties such as permeability. Human activities impact the GW system, necessitating remediation plans and protection policies to prevent overexploitation and brook the VSC. Finally, the integration of the adopted approaches was found useful, constraining the findings of one approach, reducing the associated uncertainties, enhancing the confidence level and reliability of the obtained conclusions, and obtaining useful information, enabling understanding of the internally interacting processes otherwise hidden.

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Section: Geological Settingsmentioning

confidence: 99%

“…The conformable calcareous Ar-Ridaniyah, arenaceous, and semipelitic Abt formations are the oldest rocks deposited in a transgressive subsiding likely marine environment during the Precambrian, Figure 2. The AdDawadmi governorate is considered to contain the following four main geologic units [36][37][38]: A granitic batholith makes up over 80% of the district and constitutes three granitic varieties. Two-layered basic intrusions occur in the district, a southern one, AlJe'alani, an area of about 50 km 2 , and a northern one, Arja, covering 9 km 2 .…”

Section: Geological Settingsmentioning

confidence: 99%

Integrating GIS, Statistical, Hydrogeochemical Modeling and Graphical Approaches for Hydrogeochemical Evaluation of Ad-Dawadmi Ground Water, Saudi Arabia: Status and Implications of Evaporation and Rock–Water Interactions

et al. 2023

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“…It is employed as an effective technique and has numerous geological uses, such as geologic mapping of potential locations with buried igneous bodies that are frequently linked with mineralization, identifying supra-basement features, and estimating the thickness of sedimentary cover 12 . Moreover, it is also the favourite for studying the tectonic structure, identification of intra-basement faults and uplifts, basin modelling, and structural geometry 13 – 16 , petroleum exploration modelling of geothermal and groundwater resources 17 – 19 , allowing the visualization of the geological structure of the upper crust, like faults, aids in the discovery of buried objects such as pipes, drums, and unexploded ordnance 20 . Furthermore, it aids in mineral exploration 13 , 16 , 18 , 21 – 30 .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, it is also the favourite for studying the tectonic structure, identification of intra-basement faults and uplifts, basin modelling, and structural geometry 13 – 16 , petroleum exploration modelling of geothermal and groundwater resources 17 – 19 , allowing the visualization of the geological structure of the upper crust, like faults, aids in the discovery of buried objects such as pipes, drums, and unexploded ordnance 20 . Furthermore, it aids in mineral exploration 13 , 16 , 18 , 21 – 30 .…”

Section: Introductionmentioning

confidence: 99%

Exploring gold mineralization in altered ultramafic rocks in south Abu Marawat, Eastern Desert, Egypt

Eldougdoug

Abdelazeem

Gobashy

et al. 2023

Sci Rep

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Gold mining is an important strategic sector. The search for mineral reserves is moving deeper as more accessible shallow resources are discovered. Geophysical techniques are now being employed more frequently in mineral exploration because they are quick and can provide crucial subsurface information for discovering potential metal deposits, particularly in high-relief and inaccessible places. The potential for gold in a large-scale gold mining (LSGM) locality in the South Abu Marawat area is investigated using a geological field investigation that includes rock sampling, structural measurements, detailed petrography, reconnaissance geochemistry, and thin section analysis, integrated with various transformation filters of surface magnetic data (analytic signal, normalized source strength, tilt angle), contact occurrence density maps, and tomographic modelling for the subsurface magnetic susceptibilities. The benefits of remote sensing (RS) and its technology in mapping detailed rock differentiation, and characterizing physical objects on the land surface using various spatial, and spectral resolution datasets are integrated. Both aeromagnetic and measured land magnetic profiles are used to investigate the area’s present geological conditions and possible future mining localities. Results indicate that gold mineralization in the study area is linked to the altered ultramafic zones that are associated with faulting and shearing and characterized by a low magnetic susceptibility anomaly.

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“…It is also inexpensive including both regional and local investigations. The magnetic method has mostly been used for regional surveys in hydrocarbon exploration (Abdelazeem et al, 2020(Abdelazeem et al, , 2021; de Smet et al, 2021;Abdelrahman et al, 2019;Kwami et al, 2018;Abdulrahman et al, 2017;Helaly, 2017;Gobashy and Al-Garni, 2008;Al-Garni et al, 2006); engineering geophysics (Araffa et al, 2021;Abdelazeem et al, 2014); groundwater exploration (Gobashy et al, 2021b;Al-Garni et al, 2006); mineral exploration (Gobashy et al, 2020(Gobashy et al, , 2021aEl-Sawy et al, 2018;Abdelrahman et al, 2019), mapping geological structures and igneous intrusions (Al-Garni et al, 2012;Ndatuwong and Yadav, 2014;Wang et al, 2017;El-Sawy et al, 2018); archaeo-geophysics (Schneidhofer et al, 2017); as well as estimating sedimentary basin thickness and identify groundwater contamination (Rehman et al, 2019) and geologic hazard and risk assessments (Fergany et al, 2015;Al-Garni and Gobashy, 2010) are examples of such wide range of applications.…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical and geophysical investigations to delineate underground water aquifer in arid regions: A case study, Gara oasis, Egypt

NAZIH

Gobashy

Salem

et al. 2022

Contrib. Geophys. Geod.

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The goal of the present study is to investigate, delineate, and evaluate the shallow Miocene groundwater aquifer with vertical and lateral facies variations in the Gara oasis, western desert of Egypt. This oasis represents a typical arid region in North Africa. Through grid texture analysis, lineament detection, edge detection, thresholding, and identifying areas of structural complexity from the filtered residual reduced-to-pole magnetic anomaly map, it is possible to outline the fracture zones that principally control the groundwater aquifers and water flow in the area. The groundwater quality and quantity are examined hydro-geochemically through nine groundwater samples that were gathered from wells and springs distributed throughout the area around Gara Lake. Measurements of physio-chemical parameters (TDS, pH, and EC) are carried out and its spatial distribution is critically studied. The results reveal that the ion-exchange process caused by water-rock interaction is the dominant process. Furthermore, the main ions in the groundwater in the study areas were Na and Cl. This might be due to evaporation or halite dissolution with the upward flow of waters through the fractures from the deep aquifer of the Nubian sandstone to the shallow aquifer of the fractured Miocene limestone.

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Geological and geophysical investigations to delineate the subsurface extension and the geological setting of Al Ji’lani layered intrusion and its mineralization potentiality, Ad Dawadimi District, Kingdom of Saudi Arabia

Cited by 20 publications

References 35 publications

Integrating GIS, Statistical, Hydrogeochemical Modeling and Graphical Approaches for Hydrogeochemical Evaluation of Ad-Dawadmi Ground Water, Saudi Arabia: Status and Implications of Evaporation and Rock–Water Interactions

Integrating GIS, Statistical, Hydrogeochemical Modeling and Graphical Approaches for Hydrogeochemical Evaluation of Ad-Dawadmi Ground Water, Saudi Arabia: Status and Implications of Evaporation and Rock–Water Interactions

Exploring gold mineralization in altered ultramafic rocks in south Abu Marawat, Eastern Desert, Egypt

Hydrogeochemical and geophysical investigations to delineate underground water aquifer in arid regions: A case study, Gara oasis, Egypt

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