International audienceBy the importance and diversity of its Quaternary sedimentary formations, the southern piedmont of the Grand Luberon is a laboratory for both Pleistocene and Postglacial landscape mutations in the Mediterranean area. The presence of pedogenic horizons in the Upper Pleistocene cryoclastic formations signs the impact of the different temperate interstadials of the last Pleniglacial and is a unique morphoclimatic testimony in Provence. On the basis of radiometric datings, geometry of the deposits and palaeoecological analyses performed on these peculiar formations, local morphogenetic rhythmicity are defined for the Upper Pleistocene. These results are then integrated into an original regional synthesis including Provence...