Often chronological uncertainties are ignored in multi-site comparisons, resulting in
potentially wrong assumptions concerning (a)synchrony of events between archives.
We explore this problem in a Bayesian framework, constructing millions of plausible
wiggle-match age-models in order to quantify the chronological uncertainties within
and between proxy archives. Using these data we can now calculate the statistical
probability that events indeed coincided. The method is applied to a high-resolution
14C and OSL dated lake core from south-eastern France which largely predates the
IntCal04 14C calibration curve. Depending on the applied comparison curve, events
in this core appear synchronous or asynchronous with events in the NGRIP ice core.
2007. 00301- p.