About the Authors

Paul M. Ledger

p.ledger@abdn.ac.uk

Affiliations Clermont Université, Université Blaise Pascal, Maison des Sciences de l'Homme, BP 10448, Clermont-Ferrand, France, CNRS, USR 3550, MSH, Clermont-Ferrand, France, CNRS, UMR 6042, GEOLAB, Clermont-Ferrand, France, Department of Archaeology, University of Aberdeen, Aberdeen, United Kingdom

Yannick Miras

Affiliations CNRS, UMR 6042, GEOLAB, Clermont-Ferrand, France, Clermont Université, Université Blaise Pascal, GEOLAB, BP 10448, Clermont-Ferrand, France

Matthieu Poux

Affiliation Université Lumiere Lyon 2 – ARAR UMR 5138 Archéologie et Archéométrie, Lyon, France

Pierre Yves Milcent

Affiliation Université de Toulouse – Jean Jaurès, UMR 5608-TRACES, Toulouse, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Performed the experiments: PML YM. Analyzed the data: PML YM. Wrote the paper: PML YM MP PYM.