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New geological and geochemical aspects of abu khalag area, bayuda desert, nile state, northern Sudan

Author:

Altigani, M. A. H., Elzien, S. M. and Abdel Rahman, E. M.

Subject Area:

Social Sciences and Humanities

Abstract:

Detailed geological and geochemical investigations, which have done in the studied Abu Khalag area showed that the area constitutes a part of Arabian-Nubian Shield (ANS). Lithogeochemical data derived from rock samples collected from the study area, were plotted on AFM diagram, and have shown calc-alkaline affinity, that confirms the subduction-related geological environment for these rock assemblages. Rock assemblages in Abu Khalag area, for the first time, were mapped in detail on scale of 1:350000. Rocks of the area are composed of gneisses, schists, quartzites, calc-silicates rocks, marbles, and amphibolites, all of the above-mentioned units were affected later with retrogressive regional metamorphism to greenschist facies.

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