Table 2 Radiocarbon ages of bioclasts collected from the trench wall
From: Millennial paleotsunami history at Minna Island, southern Ryukyu Islands, Japan
|  | Sample | Beta ID | Conventional radiocarbon age (years BP) | Calibrated age (cal years AD (2σ)) | Median (cal years AD) | d13C (‰) |
|---|---|---|---|---|---|---|
Layer 4 | Acropora sp. 1 | 541257 | 1380 ± 30 | 787–1170 | 982 | 0.68 |
Acropora sp. 2 | 541258 | 1920 ± 30 | 244–632 | 439 | 1.61 | |
Layer 2 | Atactodea striata | 481330 | 1260 ± 30 | 947–1281 | 1112 | 1.9 |
Palauastrea ramosa | 481331 | 1170 ± 30 | 1028–1327 | 1190 | − 0.5 |