Abstract
A map of radiogenic heat production RHP was constructed from airborne spectral gamma-ray data of Jabal Kharazah area, North Eastern Desert, Egypt. The study area possesses a range of RHP varying from 0.2 to 5.7 μW/m-3 with an average value 1.38 μW/m-3, while the standard deviation value is 0.7 μW/m-3. The maximum values are associated with the acidic rocks in the northeast, southeast and a small portion in the northwest zones. About 68% of the readings are higher than the average RHP value in the area, thus Jabal Kharazah area can be considered as heat production area due to the relatively high radioactive mineral concentrations. There are excellent relationships between the derived RHP and the three radioactive elements, Uranium (eU), Thorium (eTh) and Potassium (K).
Highlights
IntroductionRHP in crustal rocks is dominated by contributions from three radioactive elements, namely uranium, thorium, and potassium
Jabal Kharazah area is located in the North Eastern Desert of Egypt
A map of radiogenic heat production RHP was constructed from airborne spectral gamma-ray data of Jabal Kharazah area, North Eastern Desert, Egypt
Summary
RHP in crustal rocks is dominated by contributions from three radioactive elements, namely uranium, thorium, and potassium. These have long half-life times, comparable to the age of Earth, sufficient abundances in rocks and significant proportions of their emission are fully converted to heat within the rocks. RHP can be used for several purposes (Bücker & Rybach, 1996) It can be used for explanation of temperature variations with depth and interpretation of existing heat flow variations. It can be used in selecting suitable new sits for making heat flow and/or heat production measurements
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