Sample No. | Age | Rand. Error | De | Dose rate | (T-Bg) | |
---|---|---|---|---|---|---|
1 | L10.6.1 | 2.4 ± 0.2 | 0.2 | 12.7 ± 0.6 | 5.2 ± 0.4 | 2802 |
2 | L10.6.2 | 2.4 ± 0.2 | 0.2 | 10.5 ± 0.6 | 4.3 ± 0.3 | 2058 |
3 | L10.6.3 | 2.9 ± 0.3 | 0.2 | 15.2 ± 1.1 | 5.2 ± 0.4 | 1334 |
4 | L10.6.4 | 2.8 ± 0.3 | 0.2 | 37.4 ± 2.4 | 13.5 ± 0.9 | 1852 |
5 | L10.6.5 | 2.7 ± 0.3 | 0.2 | 13.9 ± 0.9 | 5.2 ± 0.4 | 3256 |
6 | L10.6.6 | 2.4 ± 0.2 | 0.11 | 12.0 ± 0.2 | 5.0 ± 0.4 | 11175 |
7 | L10.6.7 | 2.4 ± 0.2 | 0.11 | 12.04 ± 0.2 | 5.1 ± 0.4 | 11127 |
8 | L10.6.8 | 3.0 ± 0.2 | 0.13 | 14.2 ± 0.2 | 4.6 ± 0.3 | 2870 |
11 | L10.6.12 | 3.8 ± 0.5 | 0.4 | 22.1 ± 1.9 | 5.8 ± 0.4 | 2995 |
14 | L10.6.16 | 2.6 ± 0.2 | 0.11 | 13.7 ± 0.3 | 5.2 ± 0.4 | 3210 |
15 | L10.6.17 | 3.1 ± 0.3 | 0.2 | 19.3 ± 0.7 | 6.3 ± 0.5 | 4630 |
16 | L15.1.1 | 3.7 ± 0.6 | 0.5 | 25.2 ± 2.8 | 6.8 ± 0.6 | 1275 |
17 | L15.1.2 | 2.9 ± 0.3 | 0.2 | 16.89 ± 1.0 | 5.8 ± 0.5 | 1126 |
18 | L15.1.3 | 2.4 ± 0.3 | 0.2 | 15.5 ± 0.8 | 6.6 ± 0.6 | 2601 |
19 | L15.1.4 | 2.3 ± 0.2 | 0.14 | 14.2 ± 0.3 | 6.2 ± 0.6 | 8952 |
20 | L15.1.6 | 2.5 ± 0.2 | 0.15 | 15.6 ± 0.3 | 6.3 ± 0.6 | 5894 |
22 | L15.1.8 | 3.0 ± 0.4 | 0.3 | 20.8 ± 1.8 | 6.9 ± 0.6 | 3714 |
23 | L15.1.9 | 3.5 ± 0.4 | 0.3 | 22.1 ± 1.3 | 6.3 ± 0.5 | 1257 |
24 | L15.1.10 | 3.7 ± 0.4 | 0.2 | 32.7 ± 0.7 | 8.9 ± 0.9 | 3879 |
25 | L15.1.11 | 4.1 ± 0.5 | 0.3 | 29.3 ± 1.5 | 7.2 ± 0.7 | 3146 |
26 | L15.1.12 | 8.7 ± 1.3 | 1.1 | 38.8 ± 4.4 | 4.5 ± 0.4 | 3631 |
27 | L15.1.13 | 3.2 ± 0.4 | 0.3 | 16.1 ± 1.2 | 5.0 ± 0.5 | 4649 |
30 | L15.1.16 | 2.5 ± 0.3 | 0.3 | 18.6 ± 1.8 | 7.4 ± 0.7 | 1164 |
33 | L15.1.19 | 1.5 ± 0.2 | 0.2 | 11.9 ± 1.2 | 8.0 ± 0.8 | 1221 |
34 | L15.1.20 | 4.0 ± 0.4 | 0.3 | 24.3 ± 0.9 | 6.1 ± 0.5 | 3073 |
35 | L15.2.1 | 2.6 ± 0.3 | 0.2 | 13.3 ± 0.9 | 5.2 ± 0.4 | 1498 |
36 | L15.2.2 | 2.7 ± 0.2 | 0.12 | 12.3 ± 0.3 | 4.6 ± 0.3 | 3561 |
37 | L15.2.3 | 2.3 ± 0.2 | 0.14 | 18.9 ± 0.9 | 8.4 ± 0.7 | 1617 |
38 | L15.2.4 | 6.5 ± 0.6 | 0.4 | 25.3 ± 1.4 | 3.9 ± 0.3 | 1284 |
39 | L15.2.5 | 2.9 ± 0.3 | 0.2 | 16.1 ± 0.8 | 5.6 ± 0.4 | 1322 |
40 | L15.2.6 | 1.69 ± 0.14 | 0.12 | 13.6 ± 0.5 | 8.1 ± 0.6 | 5259 |
41 | L15.2.7 | 6.7 ± 0.7 | 0.6 | 58.2 ± 4.7 | 8.7 ± 0.6 | 3657 |
42 | L15.2.8 | 2.5 ± 0.4 | 0.4 | 14 ± 2 | 5.6 ± 0.4 | 1245 |
44 | L15.2.10 | 2.5 ± 0.2 | 0.10 | 19.5 ± 0.3 | 7.7 ± 0.6 | 10969 |
48 | L15.2.15 | 4.4 ± 0.3 | 0.2 | 26.2 ± 0.6 | 6.0 ± 0.4 | 12303 |
49 | L15.2.17 | 4.5 ± 0.5 | 0.4 | 23.9 ± 1.8 | 5.3 ± 0.4 | 1065 |
50 | L15.2.18 | 1.95 ± 0.2 | 0.2 | 10.9 ± 0.8 | 5.6 ± 0.4 | 4011 |
51 | L15.2.19 | 2.0 ± 0.2 | 0.12 | 10.9 ± 0.3 | 5.4 ± 0.4 | 2620 |
VERA# | 14C age | Era and | Calibrated 2σ | |
---|---|---|---|---|
Pella | VERA 5311 | 2940 ± 35 | IAI-II | 1270–1020 BCE (94%) |
Pella | VERA 5301 | 2930 ± 35 | IAI-II | 1260–1010 BCE (91%) |
Pella | VERA 5316 | 2925 ± 35 | IAI-II | 1260–1010 BCE (95%) |
Pella | VERA 5310 | 2885 ± 35 | IAI-II | 1210–970 BCE (93%) |
238U | 232Th | 40K | Observed | CR/β | MCR/β | CR/α | |
---|---|---|---|---|---|---|---|
238U standard | 972 ± 9 | 14.7 ± 0.7 | 515 ± 10 | 739.4 ± 1.6 | 66.7 ± 3.1 | 53.05 ± 0.96 | 3.9 ± 0.1 |
232Th standard | 9.36 ± 1.23 | 1792 ± 30 | 571 ± 14 | 878.56 ± 1.84 | 61.3 ± 0.8 | 56.7 ± 1.9 | 2.4 ± 0.1 |
40K standard | - | - | 13767 ± 94 | 61.20 ± 1 | 61.20 ± 1 | - |
Beta dose rate (Gy/ka) | Alpha dose rate (Gy/ka) | ||||
---|---|---|---|---|---|
238U | 232Th | 40K | 238U | 232Th | |
L10.6 | 1.21 ± 0.02 | 0.137 ± 0.006 | 1.13 ± 0.05 | 22.9 ± 0.3 | 3.6 ± 0.2 |
L15.1 | 2.32 ± 0.04 | 0.182 ± 0.008 | 1.51 ± 0.12 | 44.1 ± 0.6 | 4.9 ± 0.3 |
L15.2 | 0.843 ± 0.014 | 0.09 ± 0.01 | 0.79 ± 0.05 | 16.1 ±0.2 | 2.5 ± 0.2 |
Fractional beta count rate contribution from each nuclide | |||||
238U | 232Th | 40K | Observed average beta count rate (cks-1) | ||
L10.6 | 0.45 ± 0.02 | 0.055 ± 0.003 | 0.49 ± 0.03 | 150 ± 2 | |
L15.1 | 0.55 ± 0.03 | 0.045 ± 0.005 | 0.41 ±0.05 | 180 ± 3 | |
L15.2 | 0.45 ± 0.02 | 0.054 ± 0.005 | 0.5 ± 0.04 | 198 ± 2 |
Layer | Number of accepted | Age average | Random uncertainty | Total uncertainty | Over-dispersion | Over-dispersion |
---|---|---|---|---|---|---|
L10.6 | 11 | 2.79 | 0.13 | 0.24 | 0.29 | 10.5 |
L15.1 | 14 | 3.45 | 0.45 | 0.54 | 1.14 | 36.1 |
L15.2 | 13 | 3.32 | 0.49 | 0.51 | 1.27 | 42.2 |
L10.6 | 11 | 2.79 | 0.13 | 0.24 | 0.29 | 10.5 |
L15.1 | 13 | 3.02 | 0.21 | 0.30 | 0.74 | 25.1 |
L15.2 | 11 | 2.72 | 0.28 | 0.34 | 0.75 | 28.6 |
Including outliers | 38 | 3.20 | 0.20 | 0.30 | 1.0 | 33.8 |
Excluding outliers | 35 | 2.85 | 0.12 | 0.22 | 0.66 | 24.1 |
Sample | Observed beta | Beta dose | Alpha dose | |
---|---|---|---|---|
L10.6.1 | 170 ± 2 | 2.98 ± 0.10 | 28.83 ± 0.04 | |
L10.6.2 | 131 ± 2 | 2.30 ± 0.08 | 22.32 ± 0.03 | |
L10.6.3 | 170 ± 2 | 2.98 ± 0.10 | 28.90 ± 0.04 | |
L10.6.4 | 441 ± 3 | 7.7 ± 0.3 | 74.87 ± 0.09 | |
L10.6.5 | 168 ± 2 | 2.94 ± 0.10 | 28.45 ± 0.04 | |
L10.6.6 | 156 ± 2 | 2.73 ± 0.09 | 26.43 ± 0.04 | |
L10.6.7 | 153 ± 2 | 2.68 ± 0.09 | 25.98 ± 0.03 | |
L10.6.8 | 139 ± 2 | 2.44 ± 0.08 | 23.60 ± 0.03 | |
L10.6.9 | 142 ± 2 | 2.49 ± 0.08 | 24.12 ± 0.03 | |
L10.6.11 | 105 ± 2 | 1.85 ± 0.07 | 17.86 ± 0.02 | |
L10.6.12 | 183 ± 2 | 3.22 ± 0.11 | 31.15 ± 0.04 | |
L10.6.13 | 177 ± 2 | 3.11 ± 0.10 | 30.06 ± 0.04 | |
L10.6.14 | 123 ± 2 | 2.16 ± 0.07 | 20.90 ± 0.03 | |
L10.6.15 | 136 ± 2 | 2.39 ± 0.08 | 23.13 ± 0.03 | |
L10.6.16 | 168 ± 2 | 2.95 ± 0.10 | 28.51 ± 0.04 | |
L10.6.17 | 217 ± 3 | 3.81 ± 0.13 | 36.83 ± 0.05 | |
L10.6.18 | 156 ± 2 | 2.74 ± 0.10 | 26.55 ± 0.04 | |
L10.6.19 | 106 ± 2 | 1.85 ± 0.07 | 17.94 ± 0.03 | |
L10.6.20 | 131.6 ± 2 | 2.31 ± 0.08 | 22.34 ± 0.03 | |
L15.1.1 | 192 ± 3 | 3.4 ± 0.2 | 37.64 ± 0.08 | |
L15.1.2 | 165 ± 3 | 2.9 ± 0.2 | 32.32 ± 0.07 | |
L15.1.3 | 188 ± 3 | 3.3 ± 0.2 | 36.89 ± 0.07 | |
L15.1.4 | 172 ± 3 | 3.1 ± 0.2 | 33.76 ± 0.07 | |
L15.1.6 | 177 ± 2 | 3.2 ± 0.2 | 34.8 ± 0.8 | |
L15.1.7 | 144 ± 2 | 2.55 ± 0.14 | 28.17 ± 0.06 | |
L15.1.8 | 196 ± 2 | 3.5 ± 0.2 | 38.55 ± 0.08 | |
L15.1.9 | 172 ± 2 | 3.1 ± 0.2 | 33.68 ± 0.07 | |
L15.1.10 | 292 ± 3 | 5.2 ± 0.3 | 57.38 ± 0.11 | |
L15.1.11 | 219 ± 3 | 3.9 ± 0.2 | 43.03 ± 0.08 | |
L15.1.12 | 123 ± 2 | 2.19 ± 0.12 | 24.18 ± 0.08 | |
L15.1.13 | 144 ± 2 | 2.56 ± 0.14 | 28.30 ± 0.06 | |
L15.1.14 | 165 ± 2 | 2.9 ± 0.2 | 32.47 ± 0.06 | |
L15.1.15 | 177 ± 2 | 3.2 ± 0.2 | 34.81 ± 0.07 | |
L15.1.16 | 222 ± 2 | 3.9 ± 0.2 | 43.51 ± 0.08 | |
L15.1.17 | 172 ± 2 | 3.1 ± 0.2 | 33.72 ± 0.07 | |
L15.1.18 | 135 ± 2 | 2.41 ± 0.13 | 26.58 ± 0.05 | |
L15.1.19 | 248 ± 3 | 4.4 ± 0.2 | 48.77 ± 0.09 | |
L15.1.20 | 169 ± 3 | 3.0 ± 0.2 | 33.18 ± 0.07 | |
L15.2.1 | 157 ± 2 | 2.76 ± 0.11 | 26.79 ± 0.04 | |
L15.2.2 | 134 ± 2 | 2.34 ± 0.10 | 22.74 ± 0.04 | |
L15.2.3 | 281 ± 3 | 4.9 ± 0.2 | 47.80 ± 0.07 | |
L15.2.4 | 108 ± 2 | 1.89 ± 0.08 | 18.36 ± 0.03 | |
L15.2.5 | 179 ± 3 | 3.13 ± 0.13 | 30.39 ± 0.05 | |
L15.2.6 | 264 ± 3 | 4.6 ± 0.2 | 44.97 ± 0.07 | |
L15.2.7 | 283 ± 3 | 5.0 ± 0.2 | 48.17 ± 0.05 | |
L15.2.8 | 176 ± 2 | 3.08 ± 0.12 | 29.89 ± 0.05 | |
L15.2.9 | 133 ± 2 | 2.34 ± 0.10 | 22.66 ± 0.04 | |
L15.2.10 | 259 ± 3 | 4.6 ± 0.2 | 44.15 ± 0.07 | |
L15.2.12 | 221 ± 2 | 3.9 ± 0.2 | 37.68 ± 0.06 | |
L15.2.13 | 211 ± 2 | 3.7 ± 0.2 | 35.98 ± 0.06 | |
L15.2.14 | 200 ± 2 | 3.50 ± 0.14 | 34.00 ± 0.05 | |
L15.2.15 | 184 ± 2 | 3.23 ± 0.13 | 31.35 ± 0.05 | |
L15.2.17 | 172 ± 2 | 3.01 ± 0.12 | 29.25 ± 0.05 | |
L15.2.18 | 168 ± 2 | 2.94 ± 0.12 | 28.54 ± 0.05 | |
L15.2.19 | 162 ± 2 | 2.84 ± 0.11 | 27.55 ± 0.04 | |
L15.2.20 | 136 ± 2 | 2.39 ± 0.10 | 23.21 ± 0.04 | |
External dose rate | ||||
Soil samples | Gamma dose rate (Gy/ka) | 238U (Bq/kg) | 232Th (Bq/kg) | 40K (Bq/kg) |
L10.6 | 1.01 ± 0.12 | 132 ± 32 | 13.8 ± 1.6 | 502 ± 25 |
L15.1 | 1.64 ± 0.15 | 180 ± 24 | 12.9 ± 1.3 | 341 ± 21 |
L15.2 | 1.26 ± 0.11 | 130 ± 23 | 11.4 ± 1.8 | 325 ± 24 |