(K %) | eTh/eU | eU/eTh | eTh (ppm) | eU (ppm) | The study areas | |||||
Av. | Range | Av. | Range | Av. | Range | Av. | Range | Av. | Range | |
3.9 | 2.6 - 5.9 | 1.04 | 0.4 - 1.8 | 1.3 | 0.5 - 2.3 | 15.73 | 6 - 28.5 | 21.4 | 4.5 - 41.8 | Umm Seleimat (n = 17) |
5.5 | 2.4 - 7.8 | 0.8 | 0.3 - 2.1 | 1.7 | 0.4 - 2.8 | 3.2 | 1.3 - 7.7 | 4.3 | 2.7 - 5.1 | Sikait (n = 15) |
3.9 | 2.8 - 4.9 | 1.6 | 1.2 - 2.9 | 0.6 | 0.3 - 0.8 | 9.5 | 3.2 - 15 | 6.9 | 2.9 - 11.5 | Umm El Kheran (n = 12) |
2.8 | 1.4 - 3.9 | 0.4 | 0.2 - 0.6 | 2.7 | 1.5 - 6.5 | 4.2 | 1.5 - 6.9 | 10.5 | 4.9 - 15.7 | Umm Addebaa (n = 15) |
- | - | - | - | 0.25 | 0.33 | 19 | 18 - 20 | 4 | 1 - 9 | |
4 | - | - | - | 0.25 | 0.1 - 0.5 | 18 | 5 - 20 | 4.5 | 1 - 12 | Crustal acidic igneous rocks (after |