Fig. 1
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Fig. 3
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Fig. 8
Fig. 9
Results of OSL dating_
| Paleodose (Gy) | Aliquots (n) | U (ppm) | Th (ppm) | K (wt%) | Water content (%) | Annual dose (mGy/a) | OSL age (ka) |
|---|---|---|---|---|---|---|---|
| 34.7±1.6 | 9 / 15 | 1.25 ± 0.09 | 8.26 ± 0.42 | 0.74 ± 0.05 | 62 ± 6 | 1.62 ± 0.42 | 21 ± 6 |
Sampling localities and demagnetization results_
| Sampling locality | Sample name | Demagnetization methods | Demagnetization results | ||||
|---|---|---|---|---|---|---|---|
| Number | Latitude | Longitude | Dec (°) | Inc (°) | MAD(°) | ||
| 1 | 35°29’9.599” | 134°41’45.999” | 264 | thermally | 5.6 | 68.2 | 0.3 |
| 1 | 272 | thermally | 12.8 | 64.7 | 0.4 | ||
| 282 | thermally | –23.3 | 65.5 | 0.2 | |||
| 291 | thermally | –11.3 | 66.3 | 0.3 | |||
| 301 | thermally | –4.8 | 67.8 | 0.8 | |||
| 2 | 35°29’27.599” | 134°41’34.800” | 191 | thermally | 22.9 | 51.3 | 0.4 |
| 201 | thermally | –3.8 | 63.7 | 1.4 | |||
| 211 | thermally | 2.8 | 65.9 | 0.5 | |||
| 3 | 35°29’31.199” | 134°41’34.800” | 222 | thermally | –5.9 | 68.3 | 0.3 |
| 231 | thermally | –14.7 | 67.5 | 0.4 | |||
| 241 | thermally | 12.9 | 68.7 | 0.2 | |||
| 251 | thermally | –23.7 | 61.6 | 1.8 | |||
| 4 | 35°29’16.799” | 134°42’3.599” | 41 | magnetically | 2.0 | 63.4 | 1.0 |
| 161 | thermally | 6.2 | 62.1 | 1.8 | |||
| 171 | thermally | –10.1 | 64.5 | 1.3 | |||
| 181 | thermally | 6.0 | 68.9 | 1.2 | |||
| 5 | 35°28’30.000” | 134°42’46.799” | 12 | magnetically | 4.9 | 69.1 | 0.9 |
| 31 | magnetically | 4.7 | 66.2 | 0.8 | |||
| 131 | thermally | 8.0 | 69.1 | 0.3 | |||
| 145 | thermally | 2.9 | 76.3 | 0.2 | |||
| 151 | thermally | 10.3 | 71.2 | 0.4 | |||
| 6 | 35°28’8.400” | 134°46’37.199” | 113 | thermally | 0.8 | 53.5 | 5.0 |
| 121 | thermally | –2.1 | 61.0 | 2.6 | |||
Protocol for SAR measurement_
| Step | Treatment | Observed |
|---|---|---|
| 1(a) | Give dose, Di | – |
| 2 | Preheat (240°C for 60 s) | – |
| 3 | Stimulate for 100 s at 125°C | Li |
| 4 | Give test dose, 5 Gy | – |
| 5 | Cut heat (160°C) | – |
| 6 | Stimulate for 100 s at 125°C | Ti |
| 7 | Stimulate for 40 s at 250°C | – |
| 8 | Return to 1 | – |