An experimental intercomparison was performed with brick samples from an early medieval building in the west of France, the St-Philbert-de-Grandlieu abbey. A potentially complex set of microdosimetric problems emerged from characterisation measurements, providing a robust test of the routine procedures used by each laboratory. The dating results obtained using quartz coarse grains and fine grain samples span over a large period of time, exhibiting overdispersion, and where systematic deviations appear between quartz and fine grain chronologies. Factors causing such scatter are analysed in detail, including internal radioactivity of quartz grains, millimetre-scale heterogeneity in the fabric, and the observation and modelling of fading behaviour of fine grain minerals
Guibert, P., Bailiff, I., Blain, S., Gueli, A., Martini, M., Sibilia, E., et al. (2009). Luminescence dating of architectural ceramics from an early medieval abbey: the St.Philibert intercomparison (Loire atlantique, France). RADIATION MEASUREMENTS, 44(5-6), 488-493 [10.1016/j.radmeas.2009.06.006].
Luminescence dating of architectural ceramics from an early medieval abbey: the St.Philibert intercomparison (Loire atlantique, France)
Martini, M;Sibilia, E;
2009
Abstract
An experimental intercomparison was performed with brick samples from an early medieval building in the west of France, the St-Philbert-de-Grandlieu abbey. A potentially complex set of microdosimetric problems emerged from characterisation measurements, providing a robust test of the routine procedures used by each laboratory. The dating results obtained using quartz coarse grains and fine grain samples span over a large period of time, exhibiting overdispersion, and where systematic deviations appear between quartz and fine grain chronologies. Factors causing such scatter are analysed in detail, including internal radioactivity of quartz grains, millimetre-scale heterogeneity in the fabric, and the observation and modelling of fading behaviour of fine grain mineralsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.