asran58

Prof.Dr.Asran Mohamed Hassan Asran

Professor -

Faculty of science

Address: Geology Department, Faculty of Science, Sohag University

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Petrochemistry and tectonic significance of gneiss-amphibolite-migmatite association of Khuda metamorphic core complex, Southeastern Desert, Egypt.

2000 | Keywords Flecked gneiss, Metamorphic core, gneiss, migmatites, Wadi Khuda,
Petrochemistry and tectonic significance of gneiss-amphibolite-migmatite association of Khuda metamorphic core complex, Southeastern Desert, Egypt.
The general tectonic frame work of the metamorphic rock assemblage in the Wadi Khuda are, SE Desert of Egypt, is a major doubly plunging running in the NE-SW direction. This assemblage comprises paragneisses , flecked gneisses, migmatites and intercalated with amphibolite lenses. Field data combined with petrographic description indicate that the degree of metamorphism increases toward the core of the ... Read more

Abu Furad subduction-related magmatic suite, Eastern Desert, Egypt.

1998 | Keywords Abu Furad, subduction-related magmatic suite, Eastern Desert, Egypt,
Abu Furad subduction-related magmatic suite, Eastern Desert, Egypt.
Abu Furad diorite-granodiorite suite (AFDGS) constitutes a moderately to largely differentiated diorite mmass comprrising meladiorite Read more

Petrochemistry of the Pan-African basement rocks from Humr Waggat area, Central Eastern Desert, Egypt.

1997 | Keywords Alkaline granites, Egypt, Eastern Desert, Petrochemistry, Pan-frican, Humr Waggat,
Petrochemistry of the Pan-African basement rocks from Humr Waggat area, Central Eastern Desert, Egypt.
The basement suite of the Humr Waggat area is consists of Pan-African serpentinites, calc-alkaline metavolcanics, metagabbros and post orogenic granites. geochemically, the serpentinites are of hurzburgite parentage and enrcihed in Ni which bears non-consanguineous relationships with the tectonically incorporated metavolcanics and metagabbros which of calc-alkaline geochemistry, formed in an island arc setting. Their chemical data shows their common genetic origin. ... Read more

Petrographical, geochemical and metamorphic aspects of allochthonous Hammamat sediments at Wadi Mubarak, Central Eastern Desert, Egypt.

1995 | Keywords Hammamat sediments, WWadi MUbark, Thermal metamorphism, Eastern Desert, Egypt,
Petrographical, geochemical and metamorphic aspects of allochthonous Hammamat sediments at Wadi Mubarak, Central Eastern Desert, Egypt.
The old hammamat sediments along Wadi Mubarak (previously mapped as metasedimentary Beririq Formation) form an allochthonous unit trending NE-SW, sandwiched between island arc assemblage (lower unit) to the north and ophiolitic melange (upper unit) to the south. These old Hammamat epiclastic sediments are composed essentially of alternating coarse polymictic conglomerates, fine polymictic conglomerates, siltstones, arenites, grewackes intercalated with calcareous pelites. ... Read more

Petrographical and geochemical characters of the selected pebbles from some occurrence of the basal Hammamat conglomerates, Central Eastern Desert, Egypt.

1995 | Keywords Hammamat sediments, Geochemistry, Eastern Desert, Egypt, Um Gheig, Abu Shiqieli, Hammamat sediments, Geochemistry, Eastern Desert, Egypt, Um Gheig, Abu Shiqieli, Dokhan volcanics,
Petrographical and geochemical characters of the selected pebbles from some occurrence of the basal Hammamat conglomerates, Central Eastern Desert, Egypt.
The Hammamat Group includes a thick succession of unmetamorphosed clastic sediemnts in the eastern desert of Egypt. The unconformity relationship with the underlying Dokhan volcanics and older rocks is recorded in several occurrences. However, it is established that the Hammamat sediments and DOkhan volcanics were formed penecontemporaneously. The present study deals with detail study of two occurrences of basal conglomerates, ... Read more

Structural elements and metamorphism controlling the late Pan-African Hammamat sediments at the Up-stream of Wadi El-Miyah, Central Eastern Desert, Egypt.

1995 | Keywords Hammamat sediments, , Pan-African, W. El Miyah, , Eastern Desert, Egypt.,
Structural elements and metamorphism controlling the late Pan-African Hammamat sediments at the Up-stream of Wadi El-Miyah, Central Eastern Desert, Egypt.
The Hammamat sediments at the Upper stream of Wadi El Miyah, Central Eastern desert of Egypt, occupy two isolated basins separated from each other by metavolcanics associated with their equivalent volcanoclastics and intruded by the younger granites. In the Eastern basin, the Hammamat succession rests unconformably over the metavolcanics, with basal conglomerates up to 5 m thick, and four distinct ... Read more

Highlight on the petrology, geochemistry and structural evolution of the amphibolite facies terrain at Wadi Um Taghir along Qena-Safaga road, Central Eastern Desert, Egypt.

1994 | Keywords Um Taghir, Aphibolite facies, Eastern Desert, Geochemistry,
Highlight on the petrology, geochemistry and structural evolution of the amphibolite facies terrain at Wadi Um Taghir along Qena-Safaga road, Central Eastern Desert, Egypt.
The metamorphic terrain at W. Um Taghir along Qena-Safaga road is dominated by amphibolites, hornblende gneisses, banded hornblende gneisses, fine-grained biotite gneisses and migmatites arranged according to their abundances. They form an elongated belt thrown into a major asymmetrica anticline trending NE, dissected by a left lateral strike slip fault and finally normal fault characterized by high angle lineation. The ... Read more

Contributions to the petrography, petrochemistry and petrogenesis of Hamret Ghannam and Um Naggat granitoids, Eastern Desert, Egypt. Egypt.

1993 | Keywords , Egypt, geochemisrty. Granites, Eastrn Desert,
Contributions to the petrography, petrochemistry and petrogenesis of Hamret Ghannam and Um Naggat granitoids, Eastern Desert, Egypt. Egypt.
Field, petrographical and petrochemical studies revealed that Hamret Ghannam granite intrusion can be differentiated into two phases, an earlier phase of porphyritic granite and a later phase of alkali feldspar granite. Also Um Naggat granite intrusion is separated into pink granite, alkali feldspar granite and albite granite phases. However, it is argued that both granite intrusions are of magmatic origin. ... Read more

Arc metagabbros at Wadi Sharm El-Bahari, Central Eastern Deseret, Egypt.

1992 | Keywords ’Metagabbros,
Arc metagabbros at Wadi Sharm El-Bahari, Central Eastern Deseret, Egypt.
The metagabbro-diorite complex west of W.Sharm El Hahari, central Eastern Desert, Egypt, comprises hornblende metagabbros and hornblende quartz metagabbros which grading northward into diorites and quartz diorites. They are metamorphosed up to the greenschist facies and laterlly thermally metamorphosed up to the hornblende hornfels facies. Two thermal metamorphic zones are distinguished namely actionolite and hornblende zones. The metagabbric rocks are ... Read more

BACK-ARC Wizr ophiolites at Wadi Um Gheig district, Eastern desert, Egypt.

1992 | Keywords Back-arc, ophiolites, W.Wizr, Um Gheig, Eastern Desert, Egypt,
BACK-ARC Wizr ophiolites at Wadi Um Gheig district, Eastern desert, Egypt.
Wizr ophiolite formed in Back-Arc basin and of thoeliitic nature Read more