Fig. 1
Fig. 2
Fig. 3
Fig. 4
14C ages of loess and soil_ The age was calibrated using OxCal program v4_2, (Bronk Ramsey 2009; Southon et al_, 2013)_
| No. | Lab. No. | Sample name | Age 14C (BP) | Range of calendar (calibrated) age 68% confidence level | Range of calendar (calibrated) age 95% confidence level |
|---|---|---|---|---|---|
| 1 | GdA-3133 | TYSZ-1 | 25110 ± 115 | 29320BP (68.2%) 28974BP | 29486BP (95.4%) 28831BP |
| 2 | GdA-3134 | TYSZ-2 | 25420 ± 120 | 29674BP (68.2%) 29319BP | 29888BP (95.4%) 29109BP |
| 3 | GdA-3135 | TYSZ-3 | 17870 ± 70 | 21790BP (68.2%) 21546BP | 21877BP (95.4%) 21416BP |
| 4 | GdA-3136 | TYSZ-4 | 16880 ± 75 | 20485BP (68.2%) 20245BP | 20577BP (95.4%) 20114BP |
| 5 | GdA-3137 | TYSZ-5 | 16380 ± 75 | 19886BP (68.2%) 19638BP | 20004BP (95.4%) 19554BP |
| 6 | GdA-3138 | TYSZ-6 | 15710 ± 70 | 19031BP (68.2%) 18861BP | 19150BP (95.4%) 18794BP |
| 7 | GdA-3139 | TYSZ-7 | 9455 ± 40 | 10745BP (58.2%) 10652BP | 11059BP (2.0%) 11034BP |
| 10622BP (10.0%) 10601BP | 10995BP (1.3%) 10977BP | ||||
| 10787BP (92.1%) 10575BP | |||||
Sample names in the current study, specific activities of natural radionuclides, dose rates, calculated ages for all investigated fractions using CAM model and laboratory codes_
| Depth (m) | Sample name | U-238 (Bq/kg) | Th-232 (Bq/kg) | K-40 (Bq/kg) | Dose rate 45–63 μm (Gy/ka) | De 45–63 μm (Gy) | OSL age 45–63 μm (ka) | Laboratory code | Dose rate 4–11 μm (Gy/ka) | De 4–11 μm (Gy) | OSL age 4–11 μm (ka) | Laboratory code |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.5 | Tysz21 | 20.2±0.4 | 24.4±0.3 | 420±11 | 2.12±0.15 | 36.9±3.1 | 17.3±1.4 | GdTL2430 | 2.67±0.15 | 49.3±1.5 | 18.4±1.2 | GdTL2409 |
| 2.2 | Tysz20 | 20.5±0.4 | 23.8±0.4 | 396±11 | 2.04±0.14 | 36.2±1.1 | 17.7±1.4 | GdTL2431 | 2.58±0.15 | 47.6±1.6 | 18.4±1.2 | GdTL2410 |
| 2.7 | Tysz19 | 22.4±0.4 | 26.1±0.5 | 412±11 | 2.14±0.15 | 37.6±1.1 | 17.4±1.4 | GdTL2432 | 2.73±0.15 | 52.1±1.6 | 19.0±1.1 | GdTL2411 |
| 3.6 | Tysz18 | 19.3±0.3 | 23.2±0.5 | 365±11 | 1.90±0.13 | 35.1±1.0 | 18.4±1.4 | GdTL2433 | 2.41±0.20 | 53.9±1.6 | 22.2±1.4 | GdTL2412 |
| 5.2 | Tysz17 | 25.1±0.4 | 30.5±0.6 | 479±13 | 2.42±0.18 | 37.8±1.1 | 15.4±1.3 | GdTL2434 | 3.10±0.19 | 55.9±1.7 | 18.0±1.1 | GdTL2413 |
| 6.0 | Tysz16 | 25.0±0.5 | 31.1±0.6 | 501±14 | 2.48±0.18 | 39.5±1.1 | 15.8±1.3 | GdTL2435 | 3.17±0.18 | 58.8±1.7 | 18.5±1.1 | GdTL2414 |
| 6.9 | Tysz15 | 25.7±0.5 | 31.6±0.7 | 493±14 | 2.48±0.18 | 38.2±1.2 | 15.3±1.3 | GdTL2436 | 3.18±0.18 | 58.3±1.8 | 18.3±1.1 | GdTL2415 |
| 8.5 | Tysz14 | 26.2±0.4 | 32.3±0.6 | 520±14 | 2.56±018 | 45.9±1.5 | 17.8±1.4 | GdTL2437 | 3.28±0.19 | 59.0±1.8 | 18.0±1.1 | GdTL2416 |
| 8.9 | Tysz13 | 26.5±0.5 | 32.3±0.6 | 507±14 | 2.53±0.18 | 43.4±1.5 | 17.1±1.3 | GdTL2438 | 3.25±0.19 | 60.9±2.0 | 18.7±1.2 | GdTL2417 |
| 10.0 | Tysz12 | 27.5±0.5 | 34.6±0.7 | 516±14 | 2.60±0.18 | 47.5±1.5 | 18.2±1.3 | GdTL2439 | 3.36±0.19 | 65.2±2.0 | 19.3±1.2 | GdTL2418 |
| 10.7 | Tysz11 | 26.8±0.5 | 34.1±0.6 | 571±16 | 2.73±0.19 | 52.2±2.0 | 19.1±1.4 | GdTL2440 | 3.49±0.20 | 72.7±2.1 | 20.0±1.2 | GdTL2419 |
| 11.9 | Tysz10 | 28.4±0.5 | 35.6±0.7 | 535±14 | 2.69±0.20 | 57.5±2.3 | 21.2±1.8 | GdTL2441 | 3.47±0.20 | 71.9±2.0 | 20.7±1.3 | GdTL2420 |
| 13.0 | Tysz9 | 29.2±0.5 | 35.9±0.6 | 552±15 | 2.75±0.20 | 54.7±1.7 | 19.8±1.7 | GdTL2442 | 3.54±0.20 | 84.1±2.2 | 23.7±1.5 | GdTL2421 |
| 13.8 | Tysz8 | 27.1±0.5 | 35.4±0.6 | 560±15 | 2.72±0.20 | 56.8±2.4 | 20.7±1.7 | GdTL2443 | 3.49±0.20 | 83.1±2.7 | 23.7±1.5 | GdTL2422 |
| 14.8 | Tysz7 | 26.6±0.4 | 39.4±0.7 | 560±15 | 2.77±0.20 | 77.0±3.0 | 27.6±2.2 | GdTL2444 | 3.57±0.20 | 92.3±2.5 | 25.8±1.5 | GdTL2423 |
| 15.4 | Tysz6 | 24.6±0.4 | 38.7±0.6 | 477±13 | 2.49±0.18 | 100.0±3.0 | 40.0±3.1 | GdTL2445 | 3.25±0.19 | 150.5±4.0 | 46.1±2.9 | GdTL2424 |
| 15.6 | Tysz5 | 27.1±0.4 | 36.7±0.7 | 533±14 | 2.67±0.20 | 115.2±3.5 | 42.9±3.5 | GdTL2446 | 3.46±0.19 | 192.5±4.5 | 55.5±3.2 | GdTL2425 |
| 16.4 | Tysz4 | 26.6±0.4 | 36.9±0.6 | 545±15 | 2.69±0.20 | 146.9±5.0 | 54.4±4.4 | GdTL2447 | 3.46±0.18 | 196.3±3.3 | 56.7±3.3 | GdTL2426 |
| 17.5 | Tysz3 | 22.7±0.4 | 35.1±0.6 | 448±12 | 2.31±0.17 | 172.2±4.5 | 74.2±5.8 | GdTL2448 | 3.00±0.18 | 236.3±5.0 | 78.5±4.9 | GdTL2427 |
| 17.8 | Tysz2 | 23.8±0.4 | 34.3±0.6 | 474±13 | 2.39±0.17 | 183.4±3.5 | 76.4±5.6 | GdTL2449 | 3.09±0.18 | 250.0±6.0 | 80.7±4.9 | GdTL2428 |
| 18.4 | Tysz1 | 12.8±0.2 | 19.7±0.3 | 325±8 | 1.54±0.15 | 186.8±5.0 | 121.3±12.3 | GdTL2450 | 1.93±0.15 | 365.0±8.0 | 188±15 | GdTL2429 |
Steps used in protocols which were used for determined equivalent doses_ For the medium grain quartz fraction the single-aliquot regenerative-dose (SAR) protocol (Murray and Wintle, 2000) was used_ For the polymineral fine grains samples a post-IR IRSL protocol (Thiel et al_, 2011) was used_
| Step | OSL SAR protocol | post-IR IRSL protocol |
|---|---|---|
| 1 | Irradiation with the regenerative beta dose Di | Irradiation with the regenerative beta dose Di |
| 2 | Preheat at the temperature 260°C for 10 s | Preheat at the temperature 320°C for 60 s |
| 3 | Blue light stimulation at the temperature 125°C for 100 s | IR stimulation at the temperature 50°C for 200 s |
| 4 | Irradiation with the test dose Dt (10% of the natural dose, but not less than 5 Gy) | IR stimulation at the temperature 290°C for 200 s |
| 5 | Cut-heat at the temperature 220°C | Irradiation with the test dose Dt (10% of the natural dose, but not less than 5 Gy) |
| 6 | Blue light stimulation at the temperature 125°C for 100 s | Preheat at the temperature 320°C for 60 s |
| 7 | IR stimulation at the temperature 50°C for 200 s | |
| 8 | IR stimulation at the temperature 290°C for 200 s | |
| 9 | IR stimulation at the temperature 325°C for 100 s | |