Summary of single-grain TT-OSL and multi-grain pIR-IR225 De values for the Galería samples.

Also shown are the g-values (fading rates) measured on a subset of aliquots and normalised to a delay time of 2 days.a OD = overdispersion.b CAM = central age model; FMM = finite mixture model.c The FMM was fitted by varying the common overdispersion parameter (σk) between 5 and 30% and incrementally increasing the specified number of kn components. The FMM De values shown here were obtained from the optimum FMM fit (i.e., the fit with the lowest BIC score; [32]), which corresponded to a σk value of 15% for both samples (consistent with the lowest empirical overdispersion values obtained for other De datasets at Galería). Using this approach, the De datasets of sample AT10-2 and ATG10-7 are shown to contain two and three discrete dose populations, respectively. The main dose components (those containing the majority of individual De estimates) have been used to derive the final burial doses for these two samples.d Weighted skewness scores have been calculated on log-transformed De values using Eq. 7–8 [32]. Critical skewness scores have been calculated using Eq. 16 [125].e The De distribution are considered to be significantly positively skewed at the 68% C.I. or 95% C.I. if the weighted skewness value is greater than the corresponding critical skewness value.f pIR-IR De values have been calculated using the CAM.Summary of single-grain TT-OSL and multi-grain pIR-IR225 De values for the Galería samples.