Site and landformsMaterial | Sample No. | Depth (m) | U (ppm) | Th (ppm) | K (%) | Water content (%) | Dose rate (Gy/ka) | Equivalent dose (Gy) | Age (ka) |
---|---|---|---|---|---|---|---|---|---|
KCSE-OSL-3 | 0.80 | 1.71 | 14.50 | 2.04 | 15 ± 5 | 4.09 ± 0.22 | 249.08 ± 11.19 | 60.87 ± 4.30 | |
KCSE-OSL-4 | 2.10 | 2.52 | 13.87 | 1.91 | 15 ± 5 | 3.40 ± 0.11 | 370.77 ± 22.82 | 109.15 ± 7.62 | |
OSL-113 | 0.45 | 1.45 | 6.92 | 1.81 | 10 ± 5 | 2.93 ± 0.11 | 56.10 ± 4.70 | 19.15 ± 1 .77 | |
OSL-115 | 1.10 | 1.66 | 7.84 | 1.75 | 10 ± 5 | 2.89 ± 0.11 | 56.66 ± 5.76 | 19.58 ± 2.12 | |
OSL-111 | 1.00 | 2.20 | 8.51 | 1.69 | 10 ± 5 | 3.54 ± 0.19 | 29.39 ± 1.80 | 8.29 ± 0.67 | |
OSL-99 | 0.30 | 1.41 | 8.81 | 1.88 | 10 ± 5 | 3.14 ± 0.12 | 174.40 ± 13.81 | 55.61 ± 4.88 |