Abstract
The present work deals with mapping of radioactive heat production from rocks in the Gabal Arrubushi area in the Central Eastern Desert of Egypt based on airborne spectral gamma-ray survey data. The results show that the radioactive heat production in the areas ranges from 0.01 μWm−3 to 5.2 μWm−3. Granites, muscovite and sericite schists in the western part of Gabal Arrubushi area have abnormally high radioactive heat production values from 2.57 μWm−3 to 4.44 μWm−3. Meanwhile, the higher averages of radioactive heat production of these rock units change from 1.21 μWm−3 to 1.5 μWm−3. The intermediate averages of heat production of felsitic mylonite schist, chlorite schist, felsites, amphibolites and Hammamat sediments are below the crustal average value range, i.e., from 0.8 μWm−3 to 1.2 μWm−3. The lowest averages of heat production values are less than 0.8 μWm−3 and found in the following rock units: Wadi sediments, rhyolites, andesites, gabbro and serpentinites.
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