Abdelhady Radwan

Abdelhady Radwan

Aswan University

H-index: 3

Africa-Egypt

Professor Information

University

Aswan University

Position

___

Citations(all)

103

Citations(since 2020)

102

Cited By

21

hIndex(all)

3

hIndex(since 2020)

3

i10Index(all)

3

i10Index(since 2020)

3

Email

University Profile Page

Aswan University

Research & Interests List

Igneous and metamorphic petrology

Top articles of Abdelhady Radwan

Subduction-related mafic-silicic magmatism in the Nubian Shield: Tectono-magmatic implications of ensialic island arc association at Central Eastern Desert, Egypt.

For the Wadi El Mayet, the metagabbro-granodiorite-tonalite intrusive complex (MIC) occupies the eastern sector of famous wadi Mubarak–Dabr complex which considered as the largest intrusion in the Egyptian Eastern Desert. The basement associations in the area include volcano-sedimentary rocks, metavolcanics, and ultramafics. The whole successions were intruded by MIC, and granites. The (MIC) comprises multifarious gabbroic varieties namely: olivine, pyroxene, hornblende, uralitized gabbros and rare amphibolites, while silicic portion includes tonalite and granodiorite. Microprobe analytical chemistry of gabbros and granites refers that: the amphiboles are calcic magnesio hornblende formed at low pressure conditions. Chlorites have corundophillite composition. Plagioclase range between labradorite, andesine and oligoclase. Biotite is mainly siderophylite. Muscovite minerals are mainly cheladonite …

Authors

Abdelhady Radwan,Mohammed H Younis,Mohamed A Hassan,Hassan Abbas

Journal

Journal of African Earth Sciences

Published Date

2024/2/14

PETROGENESIS AND TECTONIC EVOLUTION OF THE RING COMPLEXES IN SOUTH EASTERN DESERT, EGYPT: A CASE STUDY FROM EL-GEZIRA ALKALINE ASSOCIATION

El-Gezira ring complex represents an important alkaline association in the south Eastern Desert, Egypt display crescent-shaped bodies and vast diversity of lithologies. It consists of several concentric rings separated by arch-shaped bodies of alkali gabbros, pyroclastics and hybrid rocks. The outer ring of El Gezira is composed of metavolcanics and basaltic andesitic flows. The inner part comprises carbonate, pyroxene bearing syenite, monzosyenite, trachyte, trachy-andesite and trachydacite. Clinopyroxenes are the prevailing mafics components in most rocks varieties. Amphiboles and olivine are common in most basic units. El Gezira ring complex comprises a high fractures frequency. El Gezira ring complex is one of a major cluster of ring complexes aligned along an ENE transform fault in the extreme southern part of Egypt. Chemically, El Gezira rock-associations are mostly metaluminous, and show low concentrations of CaO, MgO and Sr. Moreover alkalis, Rb, Nb, Y, and REE are relatively high which is distinctive of anorogenic affinity. The alkali gabbros have flat REE patterns with slight positive Eu anomalies. The trachyandesite, trachydacite and monzosyenite all have weakly to moderately fractionated patterns with a general enrichment in LREE, and mostly possess a pronounced positive and negative Eu anomalies. Typically, El-Gezira alkaline associations are classified as within plate granites. It is suggested that the primitive mantle mafic magmas were emplaced into intracrustal magma chambers during extensional regime. The primitive magma underwent fractionation processes to give the highly evolved liquids. Influx of more hot …

Authors

ABDELHADY RADWAN,ASHRAF EMAM,GEHAN B ELSHAYEB,MOHAMMED H YOUNIS

Journal

Nuclear Sciences Scientific Journal

Published Date

2023/8/1

Digital Map Simulation and Paleo-Stress Analysis of Post-Accretion Structures in the South Eastern Desert (Egypt): A Case Study from Wadi Kharit Shear Zone

The present work deals with geologic adaptation of Wadi Kharit shear zone based on field, petrographic, remote sensing and structural data. Neoproterozoic basement cover of Wadi Kharit includes, island arc metasedimentary association, metagabbro-diorite complex, syn-late to post-tectonized granites, and Nubian sandstone. The major structural orientation of the area is 270°‒ 280° N. The microstructure and paleostress analyses reveal a dextral sense of the shear zone. Such orientation indicates either the greater Najd-related Wadi Kharit–Hodein shear zone was overprinted by a dextral event subsequent to the main sinistral sense shear, or that Wadi Kharit shear can be considered as a separate high strain zone showing neither geometric nor kinematic relations with Wadi Hodein shear zone.

Authors

MH Younis,A El-Fakharani,A Emam,M Ghazaly,A Radwan

Journal

Geotectonics

Published Date

2023/2

Inverted Barrovian Metamorphic Zones in the Poly-Deformed Domains of the Western Wadi Allaqi Shear Zone (South Eastern Desert, Egypt): Geochemical and Structural Constraints

Abstract Poly-deformed late-Proterozoic metamorphic domains covering Um Ashira area at the western segment of Wadi Allaqi shear zone, South Eastern Desert of Egypt, show evidences of inverted Barrovian metamorphism. They exhibit four metamorphic zonal patterns, arranging progressively from chlorite, biotite, garnet, to sillimanite zones. The higher grade metamorphic domains appear at higher structural levels with general dipping toward the North East. Four deformational phases (D1–D4), associating with major planar structures (S1–S4), and four mesoscopic and microscopic folds are recognized. The pervasive fabric, growth of metamorphic minerals and peak metamorphism were linked to D2 deformation phase. Structural, petrographic, microchemical, and thermobarometric data along South-North profile show possibility of inverted Barrovian metamorphic pattern with an increase in the …

Authors

A Radwan,A El Fakharani,H Abbas,MH Younis,A Emam,Sh Fawzy

Journal

Geotectonics

Published Date

2021/1

Structural and petrological re-assessed for the Najd-related shear zones along the Egyptian Eastern Desert

The Nugrus-Hafafit and El Shalul areas are regarded as key regions for many enigmatic problems and debatable issues concerning the tectonic setting of the Najd-related shear zones in the Eastern Desert of Egypt. The Neoproterozoic basement succession in the studied areas is well-developed and represented by four rock groups arranged from older to younger as infrastructure unite (amphibolites, migmatized hornblende-biotite gneiss, psammitic gneiss and chlorite-biotite schist), suprastructure units including ophiolitic mélange (metaultramafics and related derivatives) and island arc assemblages (metagabbros and metavolcanic-metasedimentary association), syn-tectonic granitoids (gneissic to undeformed granodiorite-tonalite), late-tectonic to post-tectonic/post-collision granites (mylonitized muscovite granite, biotite granite and perthitic alkali granite), and post-granitic dykes (pegmatites and quartz …

Authors

Abdelhamid El-Fakharani,Abdelhady Radwan,Wael Hagag,Ezzat Abdel-Rahman,Mohammed Hassan Younis

Journal

Arabian Journal of Geosciences

Published Date

2021/6

Geochemistry and petrogenesis of I-type granitoid rocks around Nasb-Zurar intrusion, West Wadi Allaqi, South Eastern Desert, Egypt

Granitic rocks surrounding Nasb-Zurar intrusion at North West Wadi Allaqi comprise two varieties: tonalite and granodiorite of older granite (OG), and monzogranite of younger affinity (YG). Plagioclase crystals in OG are generally zoned and range in composition from andesite to oligioclase with An (21.0–46.4), Ab (52.9–78.1), and Or (0.7–1.1); meanwhile, they have albite composition in YG with Ab (87.4–93.3). Alkali feldspars are perthitic microcline and orthoclase. Muscovite has phengite composition with Si:Aliv being greater than 3:1. Biotite varies between Al-poor biotite end-members annite and phlogopite. Chlorite in OG has ripidolite composition, while that from YG is brunsvigite. The OG granite has SiO2 wt.% of 67.7 to 71.9, with high Al2O3 wt.% of 12.9 to 16.2 and low TiO2 wt.% of 0.26 to 0.52, MgO wt.% of 0.47 to 2.07, Fe2O3 wt.% of 1.91 to 4.5, P2O5 wt.% of 0.05 to 0.13, CaO wt.% of 2.01 to 3.92 …

Authors

Ashraf Emam,Abdelhady Radwan

Journal

Arabian Journal of Geosciences

Published Date

2021/4

Origin of Neoproterozoic metamorphic suites along the Western Segment of Allaqi Shear Zone, Southern Egyptian Nubian Shield

The Neoproterozoic basement complex of the western segment of the Allaqi Shear Zone (ASZ) in the extreme southern part of the Egyptian Nubian Shield comprises four main lithologic units: gneisses, amphibolites, island arc metasediments, and intrusives. In the present study, these units investigated at the outcrop scale, as well as petrographically and geochemically. Gneisses are subdivided into three types: hornblende, muscovite, and biotite gneisses. The hornblende and muscovite gneisses have para-gneissic origin, while the biotite gneiss has igneous protolith. Amphibolites have intermediate andesitic to basaltic andesite composition, with igneous origin, and were formed in island-arc environments. The metagabbros are subalkaline and have within-plate geochemical characteristics. The metasediments involve graphite-muscovite, albite, chlorite, biotite-muscovite, carbonate, and tremolite-actinolite schists …

Authors

Abdelhamid El Fakharani,Abdelhady Radwan,Mohammed Hassan Younis,Ashraf Emam,Sherif Fawzy

Journal

Arabian Journal of Geosciences

Published Date

2020/11

Monazite and cassiterite UPb dating of the Abu Dabbab rare-metal granite, Egypt: Late Cryogenian metalliferous granite magmatism in the Arabian-Nubian Shield

The Abu Dabbab rare-metal granite in the Eastern Desert of Egypt is a highly-evolved alkali-feldspar granite with transitional magmatic-hydrothermal features. Extreme geochemical fractionation and the associated significant Tasingle bondSn resource make the Abu Dabbab intrusion an important feature in the metallogenic evolution of the Arabian-Nubian Shield. Usingle bondPb dating by laser ablation sector field (SF)-ICPMS analysis of igneous monazite yields a Concordia age of 644.7 ± 2.3 Ma, identical within uncertainty to a lower intercept Tera-Wasserburg isochron age of 644.2 ± 2.3 Ma obtained from hydrothermal cassiterite. Both ages place tight constraints on the timing of magmatic-hydrothermal processes in the Abu Dabbab granite which represents the oldest highly-evolved granite recognized so far in the Pan-African Arabian-Nubian Shield. Thus, the new ages also date the start of a period of late …

Authors

Bernd Lehmann,Basem A Zoheir,Leonid A Neymark,Armin Zeh,Ashraf Emam,Abdelhady M Radwan,Rongqing Zhang,Richard J Moscati

Journal

Gondwana Research

Published Date

2020/8/1

Professor FAQs

What is Abdelhady Radwan's h-index at Aswan University?

The h-index of Abdelhady Radwan has been 3 since 2020 and 3 in total.

What are Abdelhady Radwan's research interests?

The research interests of Abdelhady Radwan are: Igneous and metamorphic petrology

What is Abdelhady Radwan's total number of citations?

Abdelhady Radwan has 103 citations in total.

What are the co-authors of Abdelhady Radwan?

The co-authors of Abdelhady Radwan are Bernd Lehmann, Rongqing Zhang, Basem Zoheir, Matthew Steele-MacInnis, Wyatt Moyer Bain, Hassan Abbas.

Co-Authors

H-index: 54
Bernd Lehmann

Bernd Lehmann

Technische Universität Clausthal

H-index: 35
Rongqing Zhang

Rongqing Zhang

Nanjing University

H-index: 31
Basem Zoheir

Basem Zoheir

Benha University

H-index: 29
Matthew Steele-MacInnis

Matthew Steele-MacInnis

University of Alberta

H-index: 5
Wyatt Moyer Bain

Wyatt Moyer Bain

University of Alberta

H-index: 2
Hassan Abbas

Hassan Abbas

Assiut University

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