1. a Clermont Université, Université Blaise Pascal, GEOLAB (UMR 6042/CNRS), Maison des Sciences de l'Homme , BP 10448, F-63000 Clermont-Ferrand, France
2. b CNRS, GEOLAB, Laboratoire de Geographie physique et environnementale , 4 rue Ledru, F-63057 Clermont-Ferrand, cedex 1, France
3. c Landscape Archaeology Research Group, Catalan Institute of Classical Archaeology (IAPICAC , Pl. Rovellat, s/n 43003, Tarragona, Spain
4. d Seminar of Prehistoric Study and Research (SERP), Department of Prehistory, Ancient History and Archaeology , University of Barcelona , C/ Montalegre, 6–8, 08001 Barcelona, Spain