Geology and Structural Evolution around Abidiya area,Sudan
Remote Sensing,Structural and Geochemical Approaches
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This research focuses on an interesting and important area that links between two major tectonic structures in NE and central Sudan. Field observations on the study area have been compared and correlated with the previous studies on the evolution of the Nakasib Suture Zone and Keraf Shear Zone.The geology of the study area has been subdivided into ophiolitic mafic-ultramafic rocks, volcanosedimentary sequences and supracrustal metasediments that are all invaded by syn- and post- to anorogenic intrusions, each group with its own distinctive lithotectonic characteristics. Ophiolitic mafic-ultram...
This research focuses on an interesting and important area that links between two major tectonic structures in NE and central Sudan. Field observations on the study area have been compared and correlated with the previous studies on the evolution of the Nakasib Suture Zone and Keraf Shear Zone.The geology of the study area has been subdivided into ophiolitic mafic-ultramafic rocks, volcanosedimentary sequences and supracrustal metasediments that are all invaded by syn- and post- to anorogenic intrusions, each group with its own distinctive lithotectonic characteristics. Ophiolitic mafic-ultramafic rocks discovered during this work have been subdivided into three complexes, from east to west: Sotrebab, Kuron and El-Fadlab complexes. These complexes line up to form a NE-SW trending belt that links with the Oshib ophiolite and the other ophiolitic fragments along the Nakasib Suture Zone in the Red Sea Hills, suggesting the continuation of the Nakasib Suture Zone west of the Nile in the Bayuda Desert.This work indicates that there are no abrupt changes in metamorphic grade, lithological varieties, geochemical characters or structural features across the southern part of the Keraf Zone.
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