Table 2 Carbon-14 ages
From: Sources of salinity and arsenic in groundwater in southwest Bangladesh
Core site | Elev. (m EGM96) | NOSAMS Lab ID | Material | δ13C (per mil PDB) | 14C age BP | cal yr BP | 2σ upper | 2σ lower | |
|---|---|---|---|---|---|---|---|---|---|
0 | −30 | OS-102912 | Plant/wood | −28.0 | 7470 | ±30 | 8295 | 8199 | 8369 |
0 | −39 | OS-102913 | Plant/wood | −25.0 | 8450 | ±40 | 9481 | 9422 | 9532 |
3 | −8 | OS-102914 | Plant/wood | −28.0 | 150 | ±25 | 173 | 0 | 283 |
3 | −23 | OS-102915 | Plant/wood | −28.0 | 3660 | ±25 | 3983 | 3901 | 4083 |
3 | −62 | OS-102916 | Plant/wood | −28.0 | 8200 | ±35 | 9158 | 9030 | 9270 |
4 | −38 | OS-102917 | Plant/wood | −28.4 | 3960 | ±30 | 4431 | 4296 | 4520 |
4 | −54 | OS-102918 | Plant/wood | −29.8 | 9250 | ±40 | 10,425 | 10,275 | 10,554 |
4 | −83 | OS-102919 | Plant/wood | −30.0 | 9470 | ±40 | 10,713 | 10,581 | 11,065 |
8 | −59 | OS-102920 | Plant/wood | −26.8 | 8500 | ±35 | 9507 | 9470 | 9537 |
8 | −84 | OS-102990 | Mollusc | −6.2 | 9670 | ±80 | 11,110 | 10,796 | 11,204 |
9 | −3 | OS-102921 | Plant/wood | −27.4 | 240 | ±25 | 290 | 0 | 421 |
9 | −11 | OS-102975 | Plant/wood | −27.1 | 4270 | ±60 | 4845 | 4728 | 4873 |
9 | −22 | OS-102976 | Plant/wood | −29.7 | 7230 | ±70 | 8039 | 7970 | 8160 |
9 | −41 | OS-102977 | Plant/wood | −27.6 | 7760 | ±70 | 8542 | 8448 | 8598 |
12 | −27 | OS-102978 | Plant/wood | −27.8 | 7660 | ±70 | 8446 | 8395 | 8539 |
12 | −64 | OS-102979 | Plant/wood | −29.1 | 8400 | ±90 | 9437 | 9303 | 9518 |
13 | −14 | OS-102980 | Plant/wood | −26.9 | 2780 | ±80 | 2878 | 2778 | 2966 |
13 | −29 | OS-102981 | Plant/Wood | −28.3 | 7590 | ±70 | 8396 | 8346 | 8432 |
13 | −51 | OS-102982 | Plant/wood | −29.3 | 8180 | ±80 | 9121 | 9020 | 9261 |
17 | −7 | OS-102983 | Plant/wood | −27.6 | 4340 | ±60 | 4907 | 4845 | 4972 |
17 | −28 | OS-102984 | Plant/wood | −25.7 | 7760 | ±80 | 8538 | 8433 | 8600 |
17 | −51 | OS-102985 | Plant/wood | −29.2 | 7950 | ±80 | 8823 | 8646 | 8983 |
17 | −57 | OS-102986 | Plant/wood | −29.1 | 44,000 | ±1020 | 47,030 | 45,860 | 48,623 |
23 | −22 | OS-102987 | Plant/wood | −27.5 | 7170 | ±70 | 7985 | 7935 | 8037 |
23 | −36 | OS-102988 | Plant/wood | −29.9 | 7860 | ±110 | 8670 | 8541 | 8977 |
23 | −54 | OS-102989 | Mollusc | −11.1 | 3340 | ±60 | 3577 | 3477 | 3677 |
27 | −18 | OS-103248 | Plant/wood | −29.0 | 6000 | ±35 | 6840 | 6747 | 6934 |
27 | −24 | OS-103249 | Plant/wood | −28.6 | 7360 | ±35 | 8177 | 8040 | 8309 |