1. CNRS, PACEA UMR5199, Université de Bordeaux
Institut Français d’Afrique du Sud
Corresponding author
Allée Geoffroy Saint Hilaire, cs 50023, F-33615 Pessac CedexFrance
2. School of Geography, Archaeology and Environmental Studies & Evolutionary Studies Institute, University of the Witwatersrand
JohannesburgSouth Africa
3. CNRS, UMR5060-IRAMAT, Université Bordeaux Montaigne
PessacFrance