Structural study of two quartzite varieties from the Utrillas facies formation (Olmos de Atapuerca, Burgos, Spain): From a petrographic characterisation to a functional analysis design

Sequential experiments employing the same quartzite varieties were then conducted involving different activities and several worked materials, which made it possible to determine use-wear formation on these two quartzite varieties. The results helped to clarify the role of intra-raw material variability in the process of use-wear formation on quartzite and contributed to ongoing studies of the lithic materials from these archaeological sites.