About the Authors

Tom D. Dillehay

tom.d.dillehay@vanderbilt.edu

Affiliations Department of Anthropology, Vanderbilt University, Nashville, Tennessee, United States of America, Universidad Austral de Chile, Valdivia, Chile, Universidad Catolica de Temuco, Chile

Carlos Ocampo

Affiliation Fundación Wulaia y Sociedad Chilena de Arqueología, Santiago, Chile

José Saavedra

Affiliation Fundación Wulaia y Sociedad Chilena de Arqueología, Santiago, Chile

Andre Oliveira Sawakuchi

Affiliation Departamento de Geologia Sedimentar e Ambiental, Instituto de Geociências, Universidade de São Paulo, São Paulo, Brasil

Rodrigo M. Vega

Affiliation Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Valdivia, Chile

Mario Pino

Affiliation Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Valdivia, Chile

Michael B. Collins

Affiliation Texas State University, San Marcos, Texas, United States of America

Linda Scott Cummings

Affiliation PaleoResearch Institute, Inc., Golden, Colorado, United States of America

Iván Arregui

Affiliation Fundación Wulaia y Sociedad Chilena de Arqueología, Santiago, Chile

Ximena S. Villagran

Affiliation Museu de Arqueologia e Etnologia, Universidade de São Paulo, São Paulo, Brasil

Gelvam A. Hartmann

Affiliations Observatório Nacional, Rio de Janeiro, RJ, Brazil, Departamento de Geofísica, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo, Brasil

Mauricio Mella

Affiliation Oficina Técnica, Servicio Nacional de Geologia y Mineria, Puerto Montt, Chile

Andrea González

Affiliation Facultad de Estudios del Patrimonio Cultural y Educación, Universidad SEKA, Santiago, Chile

George Dix

Affiliation Department of Earth Sciences, Carleton University, Ottawa, Ontario, Canada

Competing Interests

The commercial affiliation with the Paleo Research Institute does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: TD CO JS RV MP MC LSC AS MM XV GH GD. Performed the experiments: TD CO JS RV MP MC LSC AS MM XV GH GD IA AG. Analyzed the data: TD CO JS RV MP MC LSC AS MM XV GH GD. Contributed reagents/materials/analysis tools: TD RV MP LSC MM XV GH GD. Wrote the paper: TD RV MP MC LSC MM XV GH GD.