Fig 1.

Fig 2.

Fig 3.

Lithofacies code used in this study_
| Code | Texture |
| G | Gravel |
| S | Sand |
| F | Silt |
| C | Organic matter |
| Code | Structure |
| d | Deformed |
| m | Massive |
| h | Horizontal |
Results of lithological analysis for most samples of deposits used for luminescence dating_
| Sample | Ratios (phi) | Morphoscopy of quartz grains (%) | ||||||
|---|---|---|---|---|---|---|---|---|
| ID | Mz | σI | SkI | RM | EL | M | C | NU |
| J_1 | 2.2 | 1.5 | −0.5 | 34 | 10 | 31 | 19 | 6 |
| J_8 | 2.2 | 09. | 0.0 | 39 | 9 | 38 | 11 | 3 |
| J_9 | 2.1 | 1.2 | −0.3 | 35 | 9 | 36 | 16 | 4 |
| J_10 | 2.2 | 1.4 | −0.3 | 39 | 11 | 35 | 13 | 2 |
| J_11 | 3.0 | 1.7 | 0.0 | 37 | 11 | 30 | 17 | 5 |
| J_12 | 38 | 6 | 46 | 8 | 2 | |||
| J_13 | 1.6 | 2.0 | −0.1 | 50 | 4 | 38 | 6 | 2 |
| J_14 | 50 | 5 | 33 | 10 | 2 | |||
| J_15 | 4.9 | 3.4 | 0.7 | |||||
| J_16 | 4.4 | 1.8 | 0.5 | 28 | 18 | 36 | 15 | 3 |
| J_17 | 2.1 | 1.05 | −0.1 | 52 | 8 | 32 | 7 | 1 |
| J_18 | 2.3 | 1.5 | 0.1 | 49 | 3 | 37 | 9 | 2 |
| J_19 | 3.7 | 3.3 | 0.5 | 44 | 6 | 33 | 13 | 4 |
| J_20 | 2.1 | 2.1 | 0.1 | 45 | 9 | 33 | 12 | 1 |
| J_21 | 1.7 | 1.3 | −0.1 | 41 | 10 | 39 | 9 | 1 |
| J_22 | 1.7 | 1.1 | −0.1 | 45 | 9 | 35 | 9 | 2 |
| J_23 | 1.9 | 1.0 | 0.0 | 36 | 11 | 34 | 16 | 3 |
| J_24 | 1.6 | 0.9 | 0.0 | 38 | 8 | 38 | 14 | 2 |
| J_25 | 8.4 | 3.4 | 0.5 | 35 | 9 | 31 | 19 | 6 |
All important data for investigated luminescence samples: sample names, depth, radionuclide concentration, overdispersion, dose rate, equivalent dose (CAM model) and final age_
| Lab. code | Sample ID | Sample depth (cm) | Th (Bq/kg) | U (Bq/kg) | K (Bq/kg) | Dose rate (Gy/ka) | Overdispersion (%) | Equivalent dose (Gy) | OSL age (ka) |
|---|---|---|---|---|---|---|---|---|---|
| GdTL-3144 | J_1 | 100 | 5.9±0.2 | 4.7±0.2 | 195±6 | 0.91±0.04 | 10 | 18.2±0.6 | 19.9±1.0 |
| GdTL-3145 | J_2 | 205 | 7.8±0.2 | 5.7±0.2 | 198±6 | 0.93±0.04 | 10 | 15.0±0.5 | 16.1±0.8 |
| GdTL-3146 | J_3 | 175 | 9.8±0.2 | 7.9±0.2 | 249±7 | 1.14±0.04 | 14 | 17.8±0.7 | 15.6±0.9 |
| GdTL-3147 | J_4 | 105 | 14.1±0.3 | 12.2±0.2 | 351±10 | 1.59±0.06 | 5 | 20.9±0.5 | 13.1±0.5 |
| GdTL-3148 | J_5 | 230 | 6.6±0.2 | 6.2±0.2 | 185±5 | 0.88±0.05 | 5 | 19.5±0.5 | 22.1±1.0 |
| GdTL-3149 | J_6 | 215 | 6.4±0.2 | 6.4±0.2 | 196±6 | 0.91±0.04 | 18 | 19.1±1.0 | 20.9±1.4 |
| GdTL-3150 | J_7 | 200 | 10.0±0.2 | 8.1±0.2 | 224±6 | 1.07±0.06 | 7 | 17.0±0.5 | 15.8±0.7 |
| GdTL-3151 | J_8 | 203 | 8.3±0.2 | 7.4±0.2 | 210±6 | 1.00±0.04 | 9 | 19.3±0.6 | 19.2±0.9 |
| GdTL-3152 | J_9 | 160 | 6.9±0.2 | 5.8±0.2 | 205±6 | 0.94±0.04 | 5 | 16.9±0.5 | 17.9±0.8 |
| GdTL-3153 | J_10 | 140 | 6.0±0.2 | 5.1±0.2 | 189±5 | 0.88±0.04 | 8 | 17.0±0.5 | 19.3±0.9 |
| GdTL-3154 | J_11 | 210 | 10.9±0.3 | 9.3±0.2 | 337±9 | 1.42±0.06 | 10 | 108.2±3.6 | 76.1±3.8 |
| GdTL-3155 | J_12 | 165 | 7.9±0.2 | 7.0±0.2 | 216±6 | 1.01±0.04 | 13 | 16.7±0.7 | 16.4±0.9 |
| GdTL-3156 | J_13 | 130 | 7.5±0.2 | 7.6±0.2 | 200±6 | 0.98±0.04 | 12 | 17.8±0.8 | 18.1±1.0 |
| GdTL-3157 | J_14 | 90 | 11.5±0.3 | 10.1±0.2 | 285±8 | 1.34±0.05 | 13 | 19.9±0.8 | 14.8±0.8 |
| GdTL-3357 | J_15 | 190 | 15.6±0.3 | 12.8±0.3 | 380±10 | 1.67±0.06 | 12 | 110.5±3.8 | 66.1±3.3 |
| GdTL-3358 | J_16 | 210 | 21.1±0.4 | 18.5±0.3 | 437±11 | 2.00±0.07 | 13 | 100.2±4.2 | 50.0±2.6 |
| GdTL-3359 | J_17 | 187 | 5.5±0.2 | 5.0±0.2 | 177±5 | 0.83±0.04 | 8 | 13.1±0.4 | 15.8±0.7 |
| GdTL-3360 | J_18 | 140 | 10.6±0.3 | 9.8±0.2 | 229±7 | 1.16±0.04 | 20 | 25.7±1.3 | 22.0±1.4 |
| GdTL-3361 | J_19 | 135 | 10.8±0.3 | 8.8±0.2 | 284±8 | 1.28±0.05 | 18 | 14.3±0.8 | 11.0±1.0 |
| GdTL-3362 | J_20 | 145 | 13.2±0.3 | 12.0±0.3 | 271±8 | 1.33±0.05 | 16 | 22.8±1.0 | 17.2±0.9 |
| GdTL-3363 | J_21 | 125 | 12.0±0.3 | 10.2±0.2 | 272±7 | 1.29±0.05 | 16 | 14.6±0.7 | 11.2±0.6 |
| GdTL-3364 | J_22 | 170 | 6.1±0.2 | 5.3±0.2 | 187±6 | 0.87±0.04 | 22 | 6.7±0.4 | 7.6±0.5 |
| GdTL-3365 | J_23 | 100 | 6.4±0.2 | 6.2±0.2 | 190±6 | 0.93±0.04 | 8 | 10.4±0.3 | 11.5±0.5 |
| GdTL-3366 | J_24 | 90 | 6.3±0.2 | 5.42±0.2 | 181±5 | 0.89±0.04 | 20 | 11.3±0.6 | 12.6±0.8 |
| GdTL-3367 | J_25 | 80 | 21.3±0.5 | 19.2±0.3 | 409±11 | 1.98±0.07 | 10 | 28.1±0.9 | 14.1±0.6 |