The ophiolite melange of Wadi Dunquash and Arayis, Eastern desert of Egypt petrogenesis and tectonic evolution /

Wadi Dunqash and Wadi Arayis in the central and southern Eastern Desert of Egypt are characterized by the presence of metamorphosed dismembered ophiolite sequence. This sequence consists of harzburgiteserpentinite, pyroxenite-chlorite schist; normal and sheared metagabbros; metabasalt and meta-andes...

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Bibliographic Details
Main Authors: Abdel-Karim Abdel-Aal Mohamed
El-Mahallawy M. M.
Finger F.
Format: Article
Published: University of Szeged, Department of Mineralogy, Geochemistry and Petrology Szeged 1996
Series:Acta mineralogica-petrographica 37
Kulcsszavak:Kőzettan, Ásványtan, Földtan
Subjects:
Online Access:http://acta.bibl.u-szeged.hu/24838
Description
Summary:Wadi Dunqash and Wadi Arayis in the central and southern Eastern Desert of Egypt are characterized by the presence of metamorphosed dismembered ophiolite sequence. This sequence consists of harzburgiteserpentinite, pyroxenite-chlorite schist; normal and sheared metagabbros; metabasalt and meta-andesite and their schists. Major and trace element studies indicate that the present sequence can be comparable with the ophiolitic ultramafic-mafic cumulates. The metagabbros and metavolcanics pertain to a high-Ti ophiolite, exhibit tholeiitic and minor calc-alkaline nature, derived from ocean floor-island arc transitional basalts, suggest their probable back-arc environment.
Physical Description:129-141
ISSN:0365-8066