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Papers by Hatem Aboelkhair
Arabian Journal of Geosciences, 2021
The Red Sea coastal plain between Halayb and Shalateen represents one of the localities with grea... more The Red Sea coastal plain between Halayb and Shalateen represents one of the localities with great potential for future sustainable development. The area is almost flat with Quaternary deposits from the western wadies towards the Red Sea shoreline. Due to the general character of the area, it is promising for reclamation, tourism, and industrial activities. This paper highlights the environmental characteristics of the area for sustainable development using remote sensing and GIS techniques. Geomorphological analysis, assessment of soil pollution (radiological and heavy metal distribution), groundwater assessment, and detection of change to the shoreline have been carried out. Geomorphologically, the most suitable part of the study area for future planning is the southeastern region. The northern area is not appropriate as it is classified as third-order drainage and will be exposed to flash floods that threaten the infrastructure of the native settlements, newly built tourist villa...
Arabian Journal of Geosciences
Siwa Oasis is a tectonically induced depression located in the northern part of the Western Deser... more Siwa Oasis is a tectonically induced depression located in the northern part of the Western Desert. It is intensively characterized by salt mineralization and salt pans. This paper aims to investigate the evaluation of salts from the near-surface underground water in Siwa Oasis to assess the quality of salt for several uses. The study results show that the precipitated minerals identified by XRD are halite, sylvite, gypsum, carnallite, magnesium sulfate hydrate, sodium chlorate, and bischofite. More than 90% of NaCl present in the solution precipitate alone in the first stages. Analysis of heavy metals and trace elements indicated that all the salt samples were found at very low concentrations below the allowable limits. The study indicates that the type of Siwa salt is a very good quality salt, which needs a very simple refining process to meet and exceed the international standards of edible (food) salt.
Arabian Journal of Geosciences
Arabian Journal of Geosciences, 2020
El-Qaa plain in the South Sinai is one of Egypt’s promising regions for sustainable development. ... more El-Qaa plain in the South Sinai is one of Egypt’s promising regions for sustainable development. The groundwater forms the primary sources of development in this region. The present study aims to identify the groundwater resources in El-Qaa plain area, Southern Sinai, Egypt. ASTER-TIR indices (Carbonate Index, Quartz Index, and Mafic Index) combined for the first ones with geophysical and geospatial data using fuzzy overlay spatial model (FOSM) to define the potential zones of groundwater in the area of study. The resultant model was tested and validated using the available well data of groundwater in the area of study. The results revealed that over 65% of EL-Qaa area is high to moderate with groundwater potentiality. The favorable areas for groundwater storing are nearly situated in the areas of high infiltration (high pixel values of carbonate and quartz indices) in the northwestern part of EL-Qaa area. Also, the regions in the central western, mid, and northeastern portions of t...
The advancement of geophysical methods and remote-sensing techniques, with improved processing mo... more The advancement of geophysical methods and remote-sensing techniques, with improved processing models in recent years, encourage for further applied research in gold exploration and other associated elements and becoming useful tools for the exploration of new occurrences. The main objective of this research paper is to explore and map the hydrothermal alteration zones associated with gold mineralization in the Hamash area based on airborne geophysical (aeromagnetic and airborne gamma-ray spectrometry) and ASTER remote sensing data. For this purpose, ASTER and geophysical data are processed by different techniques including band ratios, minimum noise fraction, Crosta techniques, constrained energy minimization and F-parameter maps which allow for discriminating different rock units and delineating hydrothermal alteration zones. Furthermore, structural lineaments of surface and shallow-seated are effectively extracted and auto-mapped using ASTER and magnetic data. The potential miner...
International Journal of Mining Science, 2020
This work is an integrated field and ASTER remote sensing approach for remapping and interpreting... more This work is an integrated field and ASTER remote sensing approach for remapping and interpreting tectonic windows of the Eastern Desert of Egypt. These tectonic windows include the Hafafit, Sibai, Shalul, Meatiq and Beitan gneissic domes. The L1B data of the five areas are used, taking into consideration to avoid ASTER scenes after April, 2008 at which ASTER SWIR data show saturation of values and severe striping. False color composites (FCC) of the non-correlated bands 7, 3, 1 in RGB of the studied areas revealed a good match with field relations and observations. The relative good spatial and spectral resolution of ASTER imagery played an important role in distinguishing subtle spectral differences between the rock units outcropping in the studied areas. Field relations and observations collected from, at least three, cross-strike traverses in each dome, together with results obtained from microstructural investigations of the oriented samples and ASTER image processing led to ac...
Geotectonics
Estimation of finite strain and microstructural analysis of deformed rocks are keys to better und... more Estimation of finite strain and microstructural analysis of deformed rocks are keys to better understanding deformational processes and related structures in a variety of scales started from microscopic fabric development to regional-scale structures. In the present work, we carried out the quantitative calculation of strain using the Rf/φ and Fry methods for quartz, feldspar and mafic grains (e.g. biotite and hornblende) from twenty two collected samples for granitic gneiss, amphibolite and hornblende schist samples from the Um Junud area situated in south Eastern Desert of Egypt. Forty four thin sections were prepared and measured by using finite strain methods. The strain data indicate high to moderate ranges of deformation of the amphibolite to granitic rocks. The axial ratios in the XZ section range from 1.74 to 4.37 and 1.50 to 4.46 for the Rf/φ and the Fry methods respectively. The finite strain direction for the long axes displays clustering along N to WNW trend, and shallow WNW plunging in the majority of the studied samples. The short axes are found to be subvertical associated with a subhorizontal foliation. It is concluded that finite strain is of the same order of magnitude for various lithologic units outcropping in the area, and that contacts were formed under semi-brittle to semi-ductile deformation conditions. Thus, the finite strain accumulated during superimposed deformation on a previously nappe structure assemblage, which pointed out that these contacts were created during the accumulation of finite strain. This result is inconsistent with the generally believed that nappe creation in orogens carried out by simple shear deformation.
Scientific Journal for Damietta Faculty of Science
Scientific Journal for Damietta Faculty of Science
Arabian Journal of Geosciences
In geosciences, field observations, and survey, remote sensing applications and data analysis sti... more In geosciences, field observations, and survey, remote sensing applications and data analysis still need to find out a seamless approach of integration, interlinking, and storing environment. Most applications of geomatic tools in geological studies (mainly in southern countries) focus on getting information of the real world from satellite data, but do not specify the concept of the way to represent them. However, heterogeneity exists in data form of different geological components (e.g., petrography and structure analysis), measurements, spatial analysis, and classification, which make the property and relation in the perspective of integration and management non-trivial aspect. However, this paper is an attempt to figure out a geo-data management approach by using the geo-information system (GIS). The case study is South Eastern Desert, Egypt, which built up of Neoproterozoic basement rocks and experienced successive deformations. We proposed to capture different geological data and processed digital images, together with conceptual model, to facilitate a geo-spatial framework and improve the exploration and detection of lithologies, lineaments features, and find out its interlink. Therefore, the lineament number percentage and the lineament length percentage could be used as significance of rock unit chronology, where the digital foot prints of Neoproterozoic basement rocks were created.
Arabian Journal of Geosciences
Arabian Journal of Geosciences
NRIAG Journal of Astronomy and Geophysics
Nuclear Sciences Scientific Journal
Processing of multispectral ASTER data were used for detection and mapping Tertiary-Quaternary ba... more Processing of multispectral ASTER data were used for detection and mapping Tertiary-Quaternary basalt flow around Madinah area, Saudi Arabia which forms part of the north-south alignment of basalt plateaux in the Western part of Arbian Sheild. To identify and map this type of volcanic rocks, Mafic Index (MI), as well as band combinations and band ratio combination were used in the study area. Mafic Index (MI) was high for mafic and ultrmafic rocks, and systematically lower as the rock type change to felsic. False color images of ASTER band combination of 7:3:1 in R:G:B distinguished obviously between different rock units in the study area. On the other hand ASTER band combination of 1:4:8 in R:G:B clearly separate volcanic cone and crater as blue color. A new band ratio combination 6/8:4/8:12/13 successfully mapped basalt flow in the study area as blue color. Decorrelation stretching of TIR band combination 10:12:13 for R:G:B clearly mapped the basalt flow bodies as greenish yellow ...
Arabian Journal of Geosciences
The Open Geology Journal, 2014
Arabian Journal of Geosciences, 2021
The Red Sea coastal plain between Halayb and Shalateen represents one of the localities with grea... more The Red Sea coastal plain between Halayb and Shalateen represents one of the localities with great potential for future sustainable development. The area is almost flat with Quaternary deposits from the western wadies towards the Red Sea shoreline. Due to the general character of the area, it is promising for reclamation, tourism, and industrial activities. This paper highlights the environmental characteristics of the area for sustainable development using remote sensing and GIS techniques. Geomorphological analysis, assessment of soil pollution (radiological and heavy metal distribution), groundwater assessment, and detection of change to the shoreline have been carried out. Geomorphologically, the most suitable part of the study area for future planning is the southeastern region. The northern area is not appropriate as it is classified as third-order drainage and will be exposed to flash floods that threaten the infrastructure of the native settlements, newly built tourist villa...
Arabian Journal of Geosciences
Siwa Oasis is a tectonically induced depression located in the northern part of the Western Deser... more Siwa Oasis is a tectonically induced depression located in the northern part of the Western Desert. It is intensively characterized by salt mineralization and salt pans. This paper aims to investigate the evaluation of salts from the near-surface underground water in Siwa Oasis to assess the quality of salt for several uses. The study results show that the precipitated minerals identified by XRD are halite, sylvite, gypsum, carnallite, magnesium sulfate hydrate, sodium chlorate, and bischofite. More than 90% of NaCl present in the solution precipitate alone in the first stages. Analysis of heavy metals and trace elements indicated that all the salt samples were found at very low concentrations below the allowable limits. The study indicates that the type of Siwa salt is a very good quality salt, which needs a very simple refining process to meet and exceed the international standards of edible (food) salt.
Arabian Journal of Geosciences
Arabian Journal of Geosciences, 2020
El-Qaa plain in the South Sinai is one of Egypt’s promising regions for sustainable development. ... more El-Qaa plain in the South Sinai is one of Egypt’s promising regions for sustainable development. The groundwater forms the primary sources of development in this region. The present study aims to identify the groundwater resources in El-Qaa plain area, Southern Sinai, Egypt. ASTER-TIR indices (Carbonate Index, Quartz Index, and Mafic Index) combined for the first ones with geophysical and geospatial data using fuzzy overlay spatial model (FOSM) to define the potential zones of groundwater in the area of study. The resultant model was tested and validated using the available well data of groundwater in the area of study. The results revealed that over 65% of EL-Qaa area is high to moderate with groundwater potentiality. The favorable areas for groundwater storing are nearly situated in the areas of high infiltration (high pixel values of carbonate and quartz indices) in the northwestern part of EL-Qaa area. Also, the regions in the central western, mid, and northeastern portions of t...
The advancement of geophysical methods and remote-sensing techniques, with improved processing mo... more The advancement of geophysical methods and remote-sensing techniques, with improved processing models in recent years, encourage for further applied research in gold exploration and other associated elements and becoming useful tools for the exploration of new occurrences. The main objective of this research paper is to explore and map the hydrothermal alteration zones associated with gold mineralization in the Hamash area based on airborne geophysical (aeromagnetic and airborne gamma-ray spectrometry) and ASTER remote sensing data. For this purpose, ASTER and geophysical data are processed by different techniques including band ratios, minimum noise fraction, Crosta techniques, constrained energy minimization and F-parameter maps which allow for discriminating different rock units and delineating hydrothermal alteration zones. Furthermore, structural lineaments of surface and shallow-seated are effectively extracted and auto-mapped using ASTER and magnetic data. The potential miner...
International Journal of Mining Science, 2020
This work is an integrated field and ASTER remote sensing approach for remapping and interpreting... more This work is an integrated field and ASTER remote sensing approach for remapping and interpreting tectonic windows of the Eastern Desert of Egypt. These tectonic windows include the Hafafit, Sibai, Shalul, Meatiq and Beitan gneissic domes. The L1B data of the five areas are used, taking into consideration to avoid ASTER scenes after April, 2008 at which ASTER SWIR data show saturation of values and severe striping. False color composites (FCC) of the non-correlated bands 7, 3, 1 in RGB of the studied areas revealed a good match with field relations and observations. The relative good spatial and spectral resolution of ASTER imagery played an important role in distinguishing subtle spectral differences between the rock units outcropping in the studied areas. Field relations and observations collected from, at least three, cross-strike traverses in each dome, together with results obtained from microstructural investigations of the oriented samples and ASTER image processing led to ac...
Geotectonics
Estimation of finite strain and microstructural analysis of deformed rocks are keys to better und... more Estimation of finite strain and microstructural analysis of deformed rocks are keys to better understanding deformational processes and related structures in a variety of scales started from microscopic fabric development to regional-scale structures. In the present work, we carried out the quantitative calculation of strain using the Rf/φ and Fry methods for quartz, feldspar and mafic grains (e.g. biotite and hornblende) from twenty two collected samples for granitic gneiss, amphibolite and hornblende schist samples from the Um Junud area situated in south Eastern Desert of Egypt. Forty four thin sections were prepared and measured by using finite strain methods. The strain data indicate high to moderate ranges of deformation of the amphibolite to granitic rocks. The axial ratios in the XZ section range from 1.74 to 4.37 and 1.50 to 4.46 for the Rf/φ and the Fry methods respectively. The finite strain direction for the long axes displays clustering along N to WNW trend, and shallow WNW plunging in the majority of the studied samples. The short axes are found to be subvertical associated with a subhorizontal foliation. It is concluded that finite strain is of the same order of magnitude for various lithologic units outcropping in the area, and that contacts were formed under semi-brittle to semi-ductile deformation conditions. Thus, the finite strain accumulated during superimposed deformation on a previously nappe structure assemblage, which pointed out that these contacts were created during the accumulation of finite strain. This result is inconsistent with the generally believed that nappe creation in orogens carried out by simple shear deformation.
Scientific Journal for Damietta Faculty of Science
Scientific Journal for Damietta Faculty of Science
Arabian Journal of Geosciences
In geosciences, field observations, and survey, remote sensing applications and data analysis sti... more In geosciences, field observations, and survey, remote sensing applications and data analysis still need to find out a seamless approach of integration, interlinking, and storing environment. Most applications of geomatic tools in geological studies (mainly in southern countries) focus on getting information of the real world from satellite data, but do not specify the concept of the way to represent them. However, heterogeneity exists in data form of different geological components (e.g., petrography and structure analysis), measurements, spatial analysis, and classification, which make the property and relation in the perspective of integration and management non-trivial aspect. However, this paper is an attempt to figure out a geo-data management approach by using the geo-information system (GIS). The case study is South Eastern Desert, Egypt, which built up of Neoproterozoic basement rocks and experienced successive deformations. We proposed to capture different geological data and processed digital images, together with conceptual model, to facilitate a geo-spatial framework and improve the exploration and detection of lithologies, lineaments features, and find out its interlink. Therefore, the lineament number percentage and the lineament length percentage could be used as significance of rock unit chronology, where the digital foot prints of Neoproterozoic basement rocks were created.
Arabian Journal of Geosciences
Arabian Journal of Geosciences
NRIAG Journal of Astronomy and Geophysics
Nuclear Sciences Scientific Journal
Processing of multispectral ASTER data were used for detection and mapping Tertiary-Quaternary ba... more Processing of multispectral ASTER data were used for detection and mapping Tertiary-Quaternary basalt flow around Madinah area, Saudi Arabia which forms part of the north-south alignment of basalt plateaux in the Western part of Arbian Sheild. To identify and map this type of volcanic rocks, Mafic Index (MI), as well as band combinations and band ratio combination were used in the study area. Mafic Index (MI) was high for mafic and ultrmafic rocks, and systematically lower as the rock type change to felsic. False color images of ASTER band combination of 7:3:1 in R:G:B distinguished obviously between different rock units in the study area. On the other hand ASTER band combination of 1:4:8 in R:G:B clearly separate volcanic cone and crater as blue color. A new band ratio combination 6/8:4/8:12/13 successfully mapped basalt flow in the study area as blue color. Decorrelation stretching of TIR band combination 10:12:13 for R:G:B clearly mapped the basalt flow bodies as greenish yellow ...
Arabian Journal of Geosciences
The Open Geology Journal, 2014