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Radioactivity measurements and U and Th content determinations were carried out on 3 small granitic plutons, Gabal Abu Aqarib, Gabal El-Himeiyer and Gabal Um Zarabit, in the Central Eastern Desert. The Abu Aqarib and Um Zarabit alkali feldspar granites are elenogated bodies intruded into the Dokhan Volcanics, whereas El-Himeiyir is intruded into an ophiolitic melange section. Compared to the average...