Table 1. Radiocarbon samples, ages, and dates.
| AMS laboratory no. | Depth, cm | Material | δ13CPDB, ‰ | Corrected age/conventional age, 14C yr B.P. ± 1 σ | Calibrated date max. 1 σ range, calendar yr B.P. | Calibrated date max. 2 σ range, calendar yr B.P. | Calibration curve |
|---|---|---|---|---|---|---|---|
| OS-1339 | 229 | Wood charcoal layer | -22.36 | 2,440 ± 35 | 2,362-2,680 | 2,355-2,702 | Northern hemisphere terrestrial |
| OS-1332 | 407 | Hardwood | -28.54 | 3,240 ± 65 | 3,389-3,556 | 3,356-3,630 | Northern hemisphere terrestrial |
| OS-2528 | 487 | N. reclivata | -3.92 | 5,450 ± 35 | 5,777-5,882 | 5,727-5,907 | Northern hemisphere marine |
| Beta-130582 | 513 | Pollen fraction | -28.50 | 4,150 ± 50 | 4,587-4,820 | 4,530-4,830 | Northern hemisphere terrestrial |
| OS-3190 | 548 | R. mangle peat | -27.80 | 5,610 ± 60 | 6,317-6,437 | 6,287-6,527 | Northern hemisphere terrestrial |
| OS-1334 | 678 | R. mangle peat | -27.80 | 6,290 ± 50 | 7,170-7,261 | 7,025-7,321 | Northern hemisphere terrestrial |
| OS-3176 | 713 | R. mangle peat | -28.32 | 6,470 ± 85 | 7,293-7,458 | 7,184-7,564 | Northern hemisphere terrestrial |