Several algorithms are available in Tilia for generating simple age models, which provide an estimated age for each sample based on a set of age-depth or chronology controls, but provide no
estimate of the error. Modern age models that provide estimates of the error in interpolated ages are now generally preferred; however these age models do require estimates of the error in the
age-depth controls, and there are cases in which these estimates are not available or reliable and a simple age model may be justified. In the modern age models recognized by Tilia, input
radiocarbon dates are not calibrated, although output ages are in calibrated radiocarbon years. For simple age models, the input age controls must be calibrated before fitting the model.
To generate a simple age model, click Tools > Chronology.