Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1879233 | Applied Radiation and Isotopes | 2010 | 5 Pages |
Abstract
Radioactive heat-production (RHP) data of sedimentary outcrops in Gebel Anz (Eastern Desert) and Gebel Sarai (Nile Valley) are presented. A total of 103 rock samples were investigated, covering all major rock types of the areas. RHP were derived from uranium, thorium and potassium concentrations measured from gamma-radiation originating from the decay of 214Bi (238U series), 208Tl (232Th series) and the primary decay of 40K, obtained with a NaI (Tl) detector. The heat-production rate of Gebel Anz ranges from 0.94 (Nubai Sandstone ) to 5.22 μW mâ3 (Duwi Formation). In Gebel Sarai it varies from 0.82 (Esna Shale) to 7 μW mâ3 (Duwi Formation). The contribution due to U is about 62%, from Th is 34% and 4% from K in Gebel Anz. The corresponding values in Gebel Sarai are 69.6%, 26.9% and 3.5%, respectively. These data can be used to discuss the effects of the lateral variation of the RHP rate on the heat flux and the temperature fields in the upper crust.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Adel G.E. Abbady,