Probability distribution of 14C ages (Table 2) obtained from sequential radiocarbon dates automatically performed by
the OxCal 3.10 Program (Bronk Ramsey, 1998). The calibrated dates (black) are presented with 1σ and 2σ age ranges (68.3% and 95.4% density, respectively).
The age ranges of the seismic events (grey) are determined using the Bayesian distribution and related conditional probability imposed by the stratigraphic
sequence, event horizons and 14C dating. Event V is, however, poorly constrained without the lower bound age.