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Obsidian on the Island: First Geochemical Characterization for Isla Victoria, Nahuel Huapi National Park (Patagonia, Argentina)
Published online by Cambridge University Press: 13 October 2023
Abstract
We present the first geochemical data of archaeological obsidian for Isla Victoria, Nahuel Huapi National Park in Patagonia. XRF analyses were performed on 15 samples of obsidian-like rocks from the Puerto Tranquilo 1 site. Only five of the artifacts—all of which come from upper levels of the site—correspond to obsidian as a raw material. The provenance analysis indicates the use of obsidian sources located in the Andean Forest area of southern Neuquen Province. Based on these preliminary results, we propose a north–south circulation axis for this raw material. These geographic results are discussed in relation to the information available regionally.
Resumen
Presentamos aquí los primeros datos geoquímicos de obsidianas arqueológicas provenientes de la Isla Victoria, Parque Nacional Nahuel Huapi, Patagonia, Argentina. Se realizaron análisis de fluorescencia de rayos X sobre 15 muestras de rocas macroscópicamente similares a la obsidiana del sitio Puerto Tranquilo 1. Los resultados indican que sólo cinco corresponden a obsidianas, todas provenientes de los niveles tardíos del sitio. Los análisis de proveniencia indican el uso de fuentes localizadas en el sector andino-boscoso del sur oeste de la provincia del Neuquén. Proponemos un eje de circulación norte-sur para esta materia prima en el área. Finalmente, estos resultados geográficos iniciales son discutidos en relación con la información disponible regionalmente.
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- Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of Society for American Archaeology