Mansour Hashim - Academia.edu (original) (raw)

Papers by Mansour Hashim

Research paper thumbnail of Geological and Hydrochemical Processes Driving Karst Development in Southeastern Riyadh, Central Saudi Arabia

Research paper thumbnail of Heavy metal(loid)s contamination and ecological-health risk assessment of coastal sediment from Salwa Bay, Saudi Arabia

Arabian journal of chemistry, Jun 1, 2024

Research paper thumbnail of Strain Analysis and Microstructural Study of Hamadat Core Complex, Northwestern Arabian Shield, Saudi Arabia

Geotectonics, Apr 18, 2024

Research paper thumbnail of Reservoir Quality, Lithotype Assessment, and Geochemical Source Rock Analysis: Insights from Well Logs and Pyrolysis Data, Karama Field, North-Western Desert, Egypt

Research paper thumbnail of Distribution and contamination of seashells in Salwa Bay, Saudi Arabia

Journal of African earth sciences, Mar 1, 2024

Research paper thumbnail of Geochemistry, Petrogenesis and Alteration of Rare-Metal-Bearing Granitoids and Mineralized Silexite of the Al-Ghurayyah Stock, Arabian Shield, Saudi Arabia

Journal of Earth Science, Sep 30, 2023

Research paper thumbnail of Facies development and sedimentology of the Middle Miocene carbonates of the Raghama Formation, northeastern Saudi Arabia

Acta Geochimica, Oct 2, 2023

Research paper thumbnail of Coastal Alluvial Fans of the Raghama Formation, Northern East Red Sea, Saudi Arabia

Journal of Coastal Research

ABSTRACT Tawfik, M.; Al-Hashim, M.; El-Sorogy, A.; Alharbi, T., and Wadani, M., 2021. Coastal all... more ABSTRACT Tawfik, M.; Al-Hashim, M.; El-Sorogy, A.; Alharbi, T., and Wadani, M., 2021. Coastal alluvial fans of the Raghama Formation, Northern East Red Sea, Saudi Arabia. Journal of Coastal Research, 37(6), 1193–1203. Coconut Creek (Florida), ISSN 0749-0208. Four Miocene outcrops of the Raghama Formation have been investigated for the first time in NW Saudi Arabia to identify facies types, facies associations, and sequence stratigraphy. These sections have been controlled by fans that flow into the sea from higher altitudes. The fans can be divided into alluvial fans and a braided fluvial environment that pass seaward into lagoons and fringing reefs. The continental deposits of the fan are characterized by the fan apex, which passes downslope into alluvial plains. These alluvial deposits are located beside high hinterlands and contain dwindling gravel pavement and local dunes. The transitional zone between the continental and marine deposits comprises mainly erosional beaches and sheet flood sediments. The fan in the marine environment is regulated by longshore drift and wave action. The fringing reef is located offshore from the fan and close to the shore with no lagoons. The fringing reefs are locally affected by the force of the water rushing down the active streams, as indicated by the occurrence of irregularities, remnants, and gravels in the reef cervices. One third-order depositional sequence is well preserved within the studied sections. This sequence is bounded by unconformities and is controlled by the ratio between accommodation and sediment supply (A/S ratio). Variations in the A/S ratio are related to eustatic sea level, climate, and tectonics related to the collision between the Eurasian and Arabian plates, the latter which is responsible for the uplift of the studied areas and the widening of the Red Sea, leading ultimately to subsidence during the Middle Miocene.

Research paper thumbnail of Taphonomic signatures on the pearl oyster Pinctada from Arabian Gulf, Saudi Arabia

Journal of King Saud University - Science

Research paper thumbnail of New insights and constraints on the late Neoproterozoic post-collisional mafic magmatism in the Arabian Shield, Saudi Arabia

Research paper thumbnail of Environmental Assessment of Surface Seawater in Al-Uqair Coastline, Eastern Saudi Arabia

Water

The contamination of seawater with anthropogenic factors is a global challenge because of its neg... more The contamination of seawater with anthropogenic factors is a global challenge because of its negative impacts on marine environments and coastal societies. Therefore, assessing water contamination is crucial. The present work uses pollution indices and multivariate statistical analyses to document high-level heavy metal concentrations and identify potential polluters by analyzing 35 seawater samples collected from Al-Uqair coastline, Arabian Gulf, Saudi Arabia. The total content of heavy metals (HMs) (μg/L) ranged from 7109 to 7398 for Sr, 7.00–14.50 for Cr, 3.30–9.90 for Zn, 3.00–8.80 for Fe, 4.40–7.60 for As, 1.20–6.90 for Ni, 2.30–4.70 for V, 1.10–3.80 for Cu, 2.50–3.10 for Se, 0.31–1.43 for Al, 0.18–1.10 for Hg, 0.04–0.08 for Cd, 0.09–0.43 for Pb, and 0.02–0.10 for Sb. The recorded average concentrations of HMs were below the maximal admissible concentration of the World Health Organization (WHO). The heavy-metal pollution index (HPI) indicates that 14.29% of the water samples ...

Research paper thumbnail of Structural evolution and Microstructural analysis for al Faydh area, southern Arabian shield, Saudi Arabia

Journal of African Earth Sciences

Research paper thumbnail of Structural Evolution for AJJAJ Shear Zone, Northwestern Arabian Shield, Saudi Arabia

Advances in Geophysics, Tectonics and Petroleum Geosciences

Research paper thumbnail of Highly evolved rare-metal bearing granite overprinted by alkali metasomatism in the Arabian Shield: A case study from the Jabal Tawlah granites

Journal of African Earth Sciences

Research paper thumbnail of Palaeoecology and facies analysis of benthic communities in mid-Cretaceous successions in the Sinai platform, Egypt

Journal of African Earth Sciences, 2021

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Research paper thumbnail of Sedimentomorphic geodiversity in response to depositional environments: remote sensing application along the coastal plain between Ummlujj and Al-Wajh, Red Sea, Saudi Arabia

Arabian Journal of Geosciences, 2021

In the framework of the Saudi Vision 2030, which intends to develop the coastal areas along the R... more In the framework of the Saudi Vision 2030, which intends to develop the coastal areas along the Red Sea to establish some of the world’s most attractive tourism destinations, we conducted this study to offer decision makers with one case study illustrating the role of geoscience while planning for such mega projects. The coastal strip between the cities of Ummlujj and Al-Wajh was selected for the present study due to its suitability for construction of such resort project due to the wide coast reaches (10 km), low slope ranges from 0.1 to 5 with slope of the plateau less than 15°, and a general slope trend of the area toward the W, NW, and SW with a subordinated trend to E-NE. Environmental assessment of the study area reflects sedimentomorphic geodiversity relevant to three different depositional environments. These are the colluvium, coastal marine, and aeolian geodiversity. The sedimentomorphic geodiversity of the colluvium environment is associated with the major wadis in the area. It comprises mangroves, mudflats, nebkhas, and alluvial terraces. The sedimentomorphic geodiversity of the coastal marine environment comprises coral reef terraces of two levels at 1 m and 3–5 m ASL, coastal lagoons, marine sands, and coastal sabkhas. The sedimentomorphic geodiversity of the aeolian environment comprises sand dunes and sand sheets 9–20 km away from the coast. Assessment of environmental hazards that may threaten the area includes the vulnerability of the northern part of the area to flash floods at Wadi Al-Hamd basin with an approximate area of 41,897 km 2 . This allows alluvial fan, tidal flat, and mangrove growing areas. Another hazard factor is the fast growing dune movement in a high-energy aeolian environment eastward of the area shows a mean annual rate of 15.7 m. A sedimentomorphic map is developed based on the obtained results with further recommendations to consider the sedimentomorphic elements while planning coastal zones.

Research paper thumbnail of Evidence for Syn-Sedimentary Tectonism in a Paleoproterozoic Rift Basin: The Espanola Formation, Lower Huronian Supergroup, Canada

Research paper thumbnail of Sedimentology and geochemistry of the mixed carbonate-siliciclastic Espanola Formation, Paleoproterozoic Huronian Supergroup, Bruce Mines-Elliot Lake Area, Ontario, Canada

Research paper thumbnail of Decoding Geochemical Signals from the Paleoproterozoic Espanola Formation, Bruce Mines-Elliot Lake Area, Ontario, Canada: Implications for Provenance, Paleo-Weathering, and Tectonic Setting

Research paper thumbnail of Structural Setting and Kinematic Analysis of the Halaban Region, Eastern Arabian Shield, Saudi Arabia

Acta Geologica Sinica - English Edition, 2021

The vorticity analysis technique was applied to measure the different lithological units, such as... more The vorticity analysis technique was applied to measure the different lithological units, such as schist, metagranite and metavolcano‐sedimentary rocks, which are present in the Halaban region. This work aims to interpret the relationship between the different lithologies and the tectonic setting, in order to elucidate the nature of kinematic analysis in the Halaban region. The kinematic analyses were applied to feldspar porphyroclasts, quartz and hornblende for twenty‐six samples. The kinematic vorticity number (Wm) for deformed rocks in the study area ranged from ∼0.6 to 0.9. The direction of the long axes for finite strain data (X axes) revealed a WNW trend with shallow dipping. The direction of the short axes for finite strain data (Z axes) were represented by vertical with associated horizontal foliation. The results of the kinematic vorticity and strain analyses are characterized by simple shear with different degrees of deformation in the Halaban region. Furthermore, our fini...

Research paper thumbnail of Geological and Hydrochemical Processes Driving Karst Development in Southeastern Riyadh, Central Saudi Arabia

Research paper thumbnail of Heavy metal(loid)s contamination and ecological-health risk assessment of coastal sediment from Salwa Bay, Saudi Arabia

Arabian journal of chemistry, Jun 1, 2024

Research paper thumbnail of Strain Analysis and Microstructural Study of Hamadat Core Complex, Northwestern Arabian Shield, Saudi Arabia

Geotectonics, Apr 18, 2024

Research paper thumbnail of Reservoir Quality, Lithotype Assessment, and Geochemical Source Rock Analysis: Insights from Well Logs and Pyrolysis Data, Karama Field, North-Western Desert, Egypt

Research paper thumbnail of Distribution and contamination of seashells in Salwa Bay, Saudi Arabia

Journal of African earth sciences, Mar 1, 2024

Research paper thumbnail of Geochemistry, Petrogenesis and Alteration of Rare-Metal-Bearing Granitoids and Mineralized Silexite of the Al-Ghurayyah Stock, Arabian Shield, Saudi Arabia

Journal of Earth Science, Sep 30, 2023

Research paper thumbnail of Facies development and sedimentology of the Middle Miocene carbonates of the Raghama Formation, northeastern Saudi Arabia

Acta Geochimica, Oct 2, 2023

Research paper thumbnail of Coastal Alluvial Fans of the Raghama Formation, Northern East Red Sea, Saudi Arabia

Journal of Coastal Research

ABSTRACT Tawfik, M.; Al-Hashim, M.; El-Sorogy, A.; Alharbi, T., and Wadani, M., 2021. Coastal all... more ABSTRACT Tawfik, M.; Al-Hashim, M.; El-Sorogy, A.; Alharbi, T., and Wadani, M., 2021. Coastal alluvial fans of the Raghama Formation, Northern East Red Sea, Saudi Arabia. Journal of Coastal Research, 37(6), 1193–1203. Coconut Creek (Florida), ISSN 0749-0208. Four Miocene outcrops of the Raghama Formation have been investigated for the first time in NW Saudi Arabia to identify facies types, facies associations, and sequence stratigraphy. These sections have been controlled by fans that flow into the sea from higher altitudes. The fans can be divided into alluvial fans and a braided fluvial environment that pass seaward into lagoons and fringing reefs. The continental deposits of the fan are characterized by the fan apex, which passes downslope into alluvial plains. These alluvial deposits are located beside high hinterlands and contain dwindling gravel pavement and local dunes. The transitional zone between the continental and marine deposits comprises mainly erosional beaches and sheet flood sediments. The fan in the marine environment is regulated by longshore drift and wave action. The fringing reef is located offshore from the fan and close to the shore with no lagoons. The fringing reefs are locally affected by the force of the water rushing down the active streams, as indicated by the occurrence of irregularities, remnants, and gravels in the reef cervices. One third-order depositional sequence is well preserved within the studied sections. This sequence is bounded by unconformities and is controlled by the ratio between accommodation and sediment supply (A/S ratio). Variations in the A/S ratio are related to eustatic sea level, climate, and tectonics related to the collision between the Eurasian and Arabian plates, the latter which is responsible for the uplift of the studied areas and the widening of the Red Sea, leading ultimately to subsidence during the Middle Miocene.

Research paper thumbnail of Taphonomic signatures on the pearl oyster Pinctada from Arabian Gulf, Saudi Arabia

Journal of King Saud University - Science

Research paper thumbnail of New insights and constraints on the late Neoproterozoic post-collisional mafic magmatism in the Arabian Shield, Saudi Arabia

Research paper thumbnail of Environmental Assessment of Surface Seawater in Al-Uqair Coastline, Eastern Saudi Arabia

Water

The contamination of seawater with anthropogenic factors is a global challenge because of its neg... more The contamination of seawater with anthropogenic factors is a global challenge because of its negative impacts on marine environments and coastal societies. Therefore, assessing water contamination is crucial. The present work uses pollution indices and multivariate statistical analyses to document high-level heavy metal concentrations and identify potential polluters by analyzing 35 seawater samples collected from Al-Uqair coastline, Arabian Gulf, Saudi Arabia. The total content of heavy metals (HMs) (μg/L) ranged from 7109 to 7398 for Sr, 7.00–14.50 for Cr, 3.30–9.90 for Zn, 3.00–8.80 for Fe, 4.40–7.60 for As, 1.20–6.90 for Ni, 2.30–4.70 for V, 1.10–3.80 for Cu, 2.50–3.10 for Se, 0.31–1.43 for Al, 0.18–1.10 for Hg, 0.04–0.08 for Cd, 0.09–0.43 for Pb, and 0.02–0.10 for Sb. The recorded average concentrations of HMs were below the maximal admissible concentration of the World Health Organization (WHO). The heavy-metal pollution index (HPI) indicates that 14.29% of the water samples ...

Research paper thumbnail of Structural evolution and Microstructural analysis for al Faydh area, southern Arabian shield, Saudi Arabia

Journal of African Earth Sciences

Research paper thumbnail of Structural Evolution for AJJAJ Shear Zone, Northwestern Arabian Shield, Saudi Arabia

Advances in Geophysics, Tectonics and Petroleum Geosciences

Research paper thumbnail of Highly evolved rare-metal bearing granite overprinted by alkali metasomatism in the Arabian Shield: A case study from the Jabal Tawlah granites

Journal of African Earth Sciences

Research paper thumbnail of Palaeoecology and facies analysis of benthic communities in mid-Cretaceous successions in the Sinai platform, Egypt

Journal of African Earth Sciences, 2021

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Research paper thumbnail of Sedimentomorphic geodiversity in response to depositional environments: remote sensing application along the coastal plain between Ummlujj and Al-Wajh, Red Sea, Saudi Arabia

Arabian Journal of Geosciences, 2021

In the framework of the Saudi Vision 2030, which intends to develop the coastal areas along the R... more In the framework of the Saudi Vision 2030, which intends to develop the coastal areas along the Red Sea to establish some of the world’s most attractive tourism destinations, we conducted this study to offer decision makers with one case study illustrating the role of geoscience while planning for such mega projects. The coastal strip between the cities of Ummlujj and Al-Wajh was selected for the present study due to its suitability for construction of such resort project due to the wide coast reaches (10 km), low slope ranges from 0.1 to 5 with slope of the plateau less than 15°, and a general slope trend of the area toward the W, NW, and SW with a subordinated trend to E-NE. Environmental assessment of the study area reflects sedimentomorphic geodiversity relevant to three different depositional environments. These are the colluvium, coastal marine, and aeolian geodiversity. The sedimentomorphic geodiversity of the colluvium environment is associated with the major wadis in the area. It comprises mangroves, mudflats, nebkhas, and alluvial terraces. The sedimentomorphic geodiversity of the coastal marine environment comprises coral reef terraces of two levels at 1 m and 3–5 m ASL, coastal lagoons, marine sands, and coastal sabkhas. The sedimentomorphic geodiversity of the aeolian environment comprises sand dunes and sand sheets 9–20 km away from the coast. Assessment of environmental hazards that may threaten the area includes the vulnerability of the northern part of the area to flash floods at Wadi Al-Hamd basin with an approximate area of 41,897 km 2 . This allows alluvial fan, tidal flat, and mangrove growing areas. Another hazard factor is the fast growing dune movement in a high-energy aeolian environment eastward of the area shows a mean annual rate of 15.7 m. A sedimentomorphic map is developed based on the obtained results with further recommendations to consider the sedimentomorphic elements while planning coastal zones.

Research paper thumbnail of Evidence for Syn-Sedimentary Tectonism in a Paleoproterozoic Rift Basin: The Espanola Formation, Lower Huronian Supergroup, Canada

Research paper thumbnail of Sedimentology and geochemistry of the mixed carbonate-siliciclastic Espanola Formation, Paleoproterozoic Huronian Supergroup, Bruce Mines-Elliot Lake Area, Ontario, Canada

Research paper thumbnail of Decoding Geochemical Signals from the Paleoproterozoic Espanola Formation, Bruce Mines-Elliot Lake Area, Ontario, Canada: Implications for Provenance, Paleo-Weathering, and Tectonic Setting

Research paper thumbnail of Structural Setting and Kinematic Analysis of the Halaban Region, Eastern Arabian Shield, Saudi Arabia

Acta Geologica Sinica - English Edition, 2021

The vorticity analysis technique was applied to measure the different lithological units, such as... more The vorticity analysis technique was applied to measure the different lithological units, such as schist, metagranite and metavolcano‐sedimentary rocks, which are present in the Halaban region. This work aims to interpret the relationship between the different lithologies and the tectonic setting, in order to elucidate the nature of kinematic analysis in the Halaban region. The kinematic analyses were applied to feldspar porphyroclasts, quartz and hornblende for twenty‐six samples. The kinematic vorticity number (Wm) for deformed rocks in the study area ranged from ∼0.6 to 0.9. The direction of the long axes for finite strain data (X axes) revealed a WNW trend with shallow dipping. The direction of the short axes for finite strain data (Z axes) were represented by vertical with associated horizontal foliation. The results of the kinematic vorticity and strain analyses are characterized by simple shear with different degrees of deformation in the Halaban region. Furthermore, our fini...