Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
OSL age table of samples analysed from VKI core showing various parameters for age calculations_
| S. No | Sample | Depth | U | Th | K | Dose Rate | Dose | Age | No. of Discs |
|---|---|---|---|---|---|---|---|---|---|
| Name | (m) | (ppm) | (ppm) | (%) | (Gy/ka) | (Gy) | (ka) | ||
| 1 | VKI 2 | 2.6 | 0.68 ± 0.02 | 5.17 ± 0.03 | 1.46 ± 0.01 | 1.72 ± 0.12 | 5.81 ± 0.13 | 3.4 ± 0.2 | 22 |
| 2 | VKI 3 | 4.4 | 0.55 ± 0.01 | 9.28 ± 0.07 | 0.64 ± 0.02 | 1.24 ± 0.08 | 6.14 ± 0.19 | 5.0 ± 0.4 | 27 |
| 3 | VKI 4 | 5.8 | 1.48 ± 0.03 | 12.86 ± 0.19 | 1.50 ± 0.06 | 1.80 ± 0.23 | 11.34 ± 0.30 | 6.3 ± 0.8 | 30 |
| 4 | VKI 5 | 8.0 | 1.94 ± 0.02 | 9.30 ± 0.09 | 1.23 ± 0.07 | 1.52 ± 0.20 | 8.90 ± 0.33 | 5.9 ± 0.8 | 32 |
| 5 | VKI 6 | 9.9 | 1.41 ± 0.01 | 11.63 ± 0.22 | 1.35 ± 0.01 | 1.55 ± 0.21 | No signal | - | - |
| 6 | VKI 7 | 11.9 | 1.98 ± 0.04 | 9.24 ± 0.07 | 1.31 ± 0.01 | 1.57 ± 0.21 | 14.34 ± 0.37 | 9.1 ± 1.2 | 21 |
| 7 | VKI 8 | 13.8 | 0.69 ± 0.01 | 9.62 ± 0.18 | 0.55 ± 0.01 | 1.17 ± 0.08 | 67.05 ± 3.57 | 58 ± 5 | 25 |
| 8 | VKI 10 | 16.9 | 1.07 ± 0.01 | 12.84 ± 0.01 | 0.62 ± 0.01 | 1.44 ± 0.10 | 117.50 ± 7.17 | 82 ± 7 | 13 |
| 9 | VKI 11 | 19.4 | 0.93 ± 0.01 | 14.48 ± 0.16 | 0.41 ± 0.01 | 1.33 ± 0.09 | 117.90 ± 5.82 | 89 ± 7 | 30 |
| 10 | VKI 12 | 20.8 | 1.48 ± 0.02 | 12.66 ± 0.12 | 0.50 ± 0.01 | 1.40 ± 0.09 | 143.50 ± 5.28 | 102 ± 8 | 33 |
| 11 | VKI 12F | 21.2 | 1.48 ± 0.02 | 12.66 ± 0.12 | 0.50 ± 0.01 | 1.37 ± 0.10 | 166.60 ± 10.19 | 121 ± 11 | 20 |
| 12 | VKI 13 | 22.8 | 1.07 ± 0.01 | 4.67 ± 0.03 | 0.60 ± 0.01 | 0.96 ± 0.07 | 134.38 ± 7.52 | 140 ± 12 | 21 |
| 13 | VKI 14 | 24.7 | 1.04 ± 0.02 | 7.05 ± 0.16 | 0.59 ± 0.01 | 1.08 ± 0.07 | 153.97 ± 6.66 | 143 ± 11 | 16 |
Table showing relative abundance of foraminifera: benthic, planktic and stress markers down the VKI core_
| S. No | Sample Name | Depth (m) | Benthic (%) | Planktic (%) | Stress markers (%) |
|---|---|---|---|---|---|
| 1 | VKISS 10 | 5.6 | 63.2 | 36.8 | 1.6 |
| 2 | VKISS 11 | 5.9 | 56.1 | 43.9 | 1.2 |
| 3 | VKISS 12 | 6.4 | 38.1 | 40.9 | 3.7 |
| 4 | VKISS 13 | 7 | 46.6 | 53.4 | 8.8 |
| 5 | VKISS 14 | 7.5 | 61.2 | 38.7 | 7.3 |
| 6 | VKISS 15 | 8 | 52 | 48 | 2.5 |
| 7 | VKISS 16 | 8.6 | 56.9 | 43.1 | 1.2 |
| 8 | VKISS 17 | 9 | 56 | 44 | 5.7 |
| 9 | VKISS 18 | 9.5 | 69.2 | 30.7 | 10.2 |
| 10 | VKISS 19 | 10 | 49.3 | 50.6 | 9.9 |
| 11 | VKISS 20 | 10.5 | 42.3 | 57.7 | 5.3 |
| 12 | VKISS 21 | 10.9 | 89 | 11 | 0 |
| 13 | VKISS 40 | 21 | 90.4 | 9.5 | 0 |