Step | Quartz OSL | K-feldspar post-IR IRSL150 | |||
---|---|---|---|---|---|
Treatment | Observed | Step | Treatment | Observed | |
1 | Give dose | 1 | Give dose | ||
2 | Preheat for 60 s at 180°C | 2 | Preheat for 60 s at 180°C | ||
3 | IR stimulation | 3 | IR stimulation for 100 s at 50°C | ||
4 | Stimulation for 40 s at 125°C | 4 | IR stimulation for 200 s at 150°C | ||
5 | Give test dose, | 5 | Test dose, Dt | ||
6 | Heat to 160°C | 6 | Preheat for 60 s at 180°C | ||
7 | Stimulate for 40 s at 125°C | 7 | IR stimulation for 100 s at 50°C | ||
8 | Return to 1 | 8 | IR stimulation for 200 s at 150°C Return to 1 | ||
9 | Return to 1 |
SampleID | Depth (cm) | Grain size Interval (μm) | U (ppm) | Th (ppm) | K (%) | Water content (%) | Dose rate(Gy/ka) | |
---|---|---|---|---|---|---|---|---|
K-feldspar | quartz | |||||||
LUM3197 | 80 | 100–150 | 0.96 ± 0.06 | 2.63 ± 0.14 | 2.85 ± 0.14 | 6 ± 4 (1.7) | 4.02 ± 0.17 | 3.24 ± 0.24 |
LUM3198 | 149 | 100–150 | 1.06 ± 0.06 | 2.82 ± 0.15 | 2.91 ± 0.15 | 6 ± 4 (2.1) | 4.10 ± 0.17 | 3.31 ± 0.24 |
LUM3191 | 380 | 100–150 | 1.00 ± 0.05 | 2.66 ± 0.14 | 2.79 ± 0.14 | 6 ± 4 (2.6) | 3.96 ± 0.17 | 3.13 ± 0.23 |
LUM3192 | 434 | 100–150 | 0.91 ± 0.05 | 2.72 ± 0.14 | 2.83 ± 0.14 | 6 ± 4 (4.2) | 3.92 ± 0.16 | 3.15 ± 0.24 |
LUM3193 | 462 | 100–150 | 1.13 ± 0.06 | 3.27 ± 0.17 | 2.87 ± 0.14 | 6 ± 4 (6.6) | 4.05 ± 0.17 | 3.26 ± 0.24 |
LUM3194 | 480 | 100–150 | 1.31 ± 0.07 | 4.30 ± 0.22 | 2.82 ± 014 | 6 ± 4 (9.5) | 4.12 ± 0.17 | 3.32 ± 0.24 |
LUM3195 | 511 | 63–100 | 1.88 ± 0.10 | 6.95 ± 0.35 | 2.61 ± 0.13 | 13 ± 3 (14) | 4.14 ± 0.17 | 3.20 ± 0.22 |
LUM3196 | 532 | 63–100 | 2.24 ± 0.12 | 8.01 ± 0.41 | 2.34 ± 0.12 | 13 ± 3 (15) | 4.07 ± 0.17 | 3.10 ± 0.20 |
Sample | pIRIR150 | IR50 | ||
---|---|---|---|---|
Predicted | Measured | Predicted | Measured | |
residual | residual | residual | residual | |
3197 | 0.48 ± 0.07 | 0.13 ± 0.02 | 0.00 ± 0.06 | 0.03 ± 0.00 |
3198 | 0.57 ± 0.08 | 0.16 ± 0.02 | 0.14 ± 0.06 | 0.04 ± 0.01 |
3191 | 0.26 ± 0.06 | 0.09 ± 0.01 | 0.12 ± 0.05 | 0.03 ± 0.01 |
3192 | 0.32 ± 0.06 | 0.11 ± 0.01 | 0.12 ± 0.04 | 0.04 ± 0.00 |
3193 | 0.21 ± 0.06 | 0.07 ± 0.01 | 0.11 ± 0.05 | 0.04 ± 0.02 |
3194 | 0.09 ± 0.09 | 0.05 ± 0.01 | 0.12 ± 0.07 | 0.02 ± 0.00 |
3195 | -0.19 ± 0.06 | 0.11 ± 0.01 | -0.18 ± 0.06 | 0.03 ± 0.00 |
3196 | 2.91 ± 0.09 | 0.34 ± 0.02 | 0.87 ± 0.05 | 0.08 ± 0.01 |
Feldspar | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LumNo. | Depth (cm) | Quartz | pIRIR150 | IR50 | ||||||||||
(cm) Dose rate (Gy/ka) | De (Gy) | Age (a) | σOD (%) | Dose rate (Gy/ka) | De (Gy) | Age (a) | Corrected age (a) | De (Gy) | Age (a) | Corrected age (a) | ||||
3197 | 80 | 3.24±0.23 | 0.28±0.01 | 87±7 | 6.3 | 4.02±0.17 | 0.81±0.05 | 0.99±0.38 | 202±15 | 214±21 | 0.34±0.01 | 8.38±0.59 | 85±4 | 145±13 |
3198 | 149 | 3.31±0.24 | 0.28±0.01 | 85±7 | 4.4 | 4.10±0.17 | 0.88±0.06 | 1.96±0.41 | 215±18 | 243±26 | 0.35±0.01 | 9.23±0.64 | 86±5 | 159±18 |
3191 | 380 | 3.13±0.23 | 0.34±0.01 | 110±9 | 6.6 | 3.96±0.17 | 0.68±0.03 | 0.38±0.28 | 173±10 | 177±14 | 0.38±0.01 | 9.18±0.52 | 96±5 | 178±17 |
3192 | 434 | 3.15±0.23 | 0.36±0.01 | 115±9 | 5.9 | 3.92±0.16 | 0.74±0.03 | 1.11±0.39 | 189±12 | 203±17 | 0.39±0.01 | 9.30±0.54 | 100±4 | 187±17 |
3193 | 462 | 3.26±0.24 | 0.37±0.01 | 114±9 | 12.5 | 4.05±0.17 | 0.66±0.03 | 0.44±0.31 | 164±9 | 168±13 | 0.39±0.01 | 9.36±0.74 | 96±5 | 181±21 |
3194 | 480 | 3.31±0.24 | 0.42±0.01 | 128±10 | 6.7 | 4.12±0.17 | 0.60±0.05 | 0.62±0.42 | 145±13 | 151±17 | 0.46±0.03 | 7.80±0.74 | 111±8 | 186±25 |
3195 | 511 | 3.19±0.22 | 4.69±0.14 | 1470±110 | 12.3 | 4.14±0.17 | 5.77±0.24 | 0.25±0.41 | 1390±80 | 1430±120 | 4.28±0.18 | 4.99±0.26 | 1040±60 | 1500±120 |
3196 | 532 | 3.08±0.21 | 15.3±0.3 | 4970±350 | 10.1 | 4.07±0.17 | 22.1±1.7 | 0.80±0.28 | 5420±470 | 5760±620 | 14.1±0.4 | 4.45±0.19 | 3480±180 | 4950±350 |