Table 1.
Comparisons of 14C dates based on modern (SM003) and fossil (M22-M24) sand dollars and fossil mollusks reported in Peng et al.12.
| Lab code | Sample ID | Species | pMC (%) | ∆14C (%) | 14C age (yr BP) | Calendric age (yr BP) | MIS | Sources |
|---|---|---|---|---|---|---|---|---|
| NTUAMS-6682–1 | SM003 | S. mirabilis | 107.84 ± 0.84 | 78.4 ± 0.6 | Modern | Modern | This study | |
| NTUAMS-7067–1 | M22 | S. mirabilis | 3.21 ± 0.08 | − 967.9 ± 24.3 | 27,623 ± 202 | 31,420 ± 280 | 3 | This study |
| NTUAMS-7068–1 | M23 | S. mirabilis | 0.36 ± 0.02 | − 996.4 ± 51.3 | 45,211 ± 413 | 48,620 ± 965 | 3 | This study |
| NTUAMS-7069–1 | M24 | S. mirabilis | < 0.11 | < − 998.9 | > 55,000 | This study | ||
| α | Pecten byoritsuensis | 44,900 ± 1400 | 3 | Ref.12 | ||||
| β | Pecten byoritsuensis | 36,700 ± 600 | 3 | Ref.12 | ||||
| γ | Pecten byoritsuensis | 30,900 ± 300 | 3 | Ref.12 |
MIS Marine Isotope Stages. Modern is younger than AD 1950.