Table 1 Compound-specific radiocarbon data ± propagated errors (σ) of long-chain n-alkanoic acids for cores SO178-13-6 and LV28-4-4
From: Deglacial mobilization of pre-aged terrestrial carbon from degrading permafrost
Sample depth (cm below surface) | Deposition age (mid-point) [cal kyrs BP] | n -alkanoic acid | Corrected F14C ± σF14Ca | ∆14C ± σ14C [‰] | Age at deposition ± 1σ [yr] |
|---|---|---|---|---|---|
Core SO178-13-6 | |||||
55–65 | 0.76 | n-C26:0 | 0.6465 ± 0.0064 | −358.5 ± 6.1 | 3065 ± 123 |
695–705 | 5.92 | n-C26:0 | 0.3078 ± 0.0041 | −694.6 ± 4.0 | 4790 ± 120 |
1435–1445 | 10.02 | n-C26:0b | 0.1567 ± 0.0036 | −844.5 ± 3.4 | 8060 ± 210 |
1435–1445 | 10.02 | n-C28:0b | 0.1514 ± 0.0035 | −849.7 ± 3.3 | 8410 ± 205 |
1805–1815 | 11.97 | n-C26:0 | 0.1762 ± 0.0046 | −825.2 ± 4.5 | 4980 ± 325 |
2033–2041 | 14.16 | n-C26:0b | 0.1152 ± 0.0031 | −885.7 ± 2.9 | 6780 ± 290 |
2335–2342 | 17.26 | n-C26:0 | 0.0683 ± 0.0030 | −932.2 ± 2.9 | 8600 ± 260 |
Core LV28-4-4 | |||||
54–56 | 0.71 | n-C26:0 | 0.5943 ± 0.0084 | −411.1 ± 8.1 | 4115 ± 50 |
54–56 | 0.71 | n-C28:0 | 0.5692 ± 0.0102 | −435.2 ± 9.8 | 4580 ± 190 |
751–753 | 8.29 | n-C28:0 | 0.1586 ± 0.0041 | −842.6 ± 4.0 | 9690 ± 240 |
860–862 | 11.78 | n-C26:0 | 0.1045 ± 0.0036 | −896.3 ± 3.5 | 10,160 ± 345 |
860–862 | 11.78 | n-C28:0 | 0.1100 ± 0.0046 | −890.8 ± 4.4 | 9690 ± 445 |
926–928 | 16.0 | n-C26:0 | 0.0973 ± 0.0039 | −736.0 ± 4.2 | 6530 ± 340 |
