Varvarco obsidian: a new source in northwestern Patagonia (Neuquén, Argentina)

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In northern Neuquén there are pyroclastic deposits containing obsidian nodules. The researches in the region revealed the main sources used by the people that lived there. A program of geoarchaeological and geochemical study was adopted to extend the knowledge of each source of obsidian. Thus, new o...

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Autores principales: Fernández, María Victoria, Leal, Pablo Rodrigo, Della Negra, Claudia, Klesner, Catherine, MacDonald, Brandi Lee, Glascock, Michael, Barberena, Ramiro
Formato: Artículo revista
Lenguaje:Español
Publicado: Facultad de Filosofía y Humanidades. Museo de Antropología 2019
Materias:
Obsidian
Varvarco
Geochemistry
Neuquén
Obsidiana
Geoquímica
Acceso en línea:https://revistas.unc.edu.ar/index.php/antropologia/article/view/21865
Aporte de:
Revista del Museo de Antropología de Universidad Nacional de Córdoba
id I10-R372-article-21865
record_format ojs
spelling I10-R372-article-218652024-11-04T18:48:36Z Varvarco obsidian: a new source in northwestern Patagonia (Neuquén, Argentina) Obsidiana Varvarco: una nueva fuente en el noroeste de Patagonia (Neuquén, Argentina) Fernández, María Victoria Leal, Pablo Rodrigo Della Negra, Claudia Klesner, Catherine MacDonald, Brandi Lee Glascock, Michael Barberena, Ramiro Obsidian Varvarco Geochemistry Neuquén Obsidiana Varvarco Geoquímica Neuquén In northern Neuquén there are pyroclastic deposits containing obsidian nodules. The researches in the region revealed the main sources used by the people that lived there. A program of geoarchaeological and geochemical study was adopted to extend the knowledge of each source of obsidian. Thus, new occurrences of obsidian have been discovered, the most notable of which is the Varvarco obsidian presented here. We present the samples points conducted in the valley of Varvarco river, its geological and geomorphological context, the presence of obsidian, the type of deposit, presentation form, distribution and abundance. Then, we described the main characteristics observed under a petrographic microscope. Finally, we present the results of X-ray fluorescence and neutron activation geochemical analysis. The Varvarco obsidian differs from that of Cerro Huenul, but not from the obsidian Maule 1 and 2 from the XRF. NAA discriminates well this new obsidian from those already known in Neuquén. The results obtained allow to reinterpret the availability of good quality lithic resources and to revise the interpretations of mobility and interaction of populations in this region. En el norte neuquino existen depósitos piroclásticos que contienen nódulos de obsidianas. Las investigaciones en la región dieron a conocer las principales fuentes utilizadas por las poblaciones que allí habitaron. Para profundizar el conocimiento de cada fuente de obsidiana se adoptó un programa de estudio geoarqueológico y geoquímico. Así, se han descubierto nuevas ocurrencias de obsidianas, la más destacable de las cuales es la obsidiana Varvarco que aquí se presenta. Se dan a conocer los muestreos realizados en el valle del río Varvarco, su contexto geológico y geomorfológico, la presencia de obsidiana, el tipo de yacimiento, forma de presentación, distribución y abundancia. Luego, se describen las principales características observadas bajo microscopio petrográfico. Por último, se presentan los resultados de análisis geoquímicos de fluorescencia de rayos X y activación neutrónica. A partir de los primeros la obsidiana Varvarco se diferencia de la de Cerro Huenul, pero no de la obsidiana Maule 1 y 2. Los segundos análisis discriminan bien esta nueva obsidiana de las ya conocidas para Neuquén. Los resultados obtenidos permiten reinterpretar la disponibilidad de recursos líticos de buena calidad para la talla y revisar las interpretaciones de movilidad e interacción de poblaciones en esta región. Facultad de Filosofía y Humanidades. Museo de Antropología 2019-04-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer reviewed article Artículo revisado por pares Artigo revisado por pares application/pdf https://revistas.unc.edu.ar/index.php/antropologia/article/view/21865 10.31048/1852.4826.v12.n1.21865 Revista del Museo de Antropología; Vol. 12 No. 1 (2019); 35-44 Revista del Museo de Antropología; Vol. 12 Núm. 1 (2019); 35-44 Revista del Museo de Antropología; v. 12 n. 1 (2019); 35-44 1852-4826 1852-060X 10.31048/1852.4826.v12.n1 spa https://revistas.unc.edu.ar/index.php/antropologia/article/view/21865/23577 Derechos de autor 2019 María Victoria Fernández, Pablo Rodrigo Leal, Claudia Della Negra, Catherine Klesner, Brandi Lee MacDonald, Michael Glascock, Ramiro Barberena
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-372
container_title_str Revista del Museo de Antropología
language Español
format Artículo revista
topic Obsidian
Varvarco
Geochemistry
Neuquén
Obsidiana
Varvarco
Geoquímica
Neuquén
spellingShingle Obsidian
Varvarco
Geochemistry
Neuquén
Obsidiana
Varvarco
Geoquímica
Neuquén
Fernández, María Victoria
Leal, Pablo Rodrigo
Della Negra, Claudia
Klesner, Catherine
MacDonald, Brandi Lee
Glascock, Michael
Barberena, Ramiro
Varvarco obsidian: a new source in northwestern Patagonia (Neuquén, Argentina)
topic_facet Obsidian
Varvarco
Geochemistry
Neuquén
Obsidiana
Varvarco
Geoquímica
Neuquén
author Fernández, María Victoria
Leal, Pablo Rodrigo
Della Negra, Claudia
Klesner, Catherine
MacDonald, Brandi Lee
Glascock, Michael
Barberena, Ramiro
author_facet Fernández, María Victoria
Leal, Pablo Rodrigo
Della Negra, Claudia
Klesner, Catherine
MacDonald, Brandi Lee
Glascock, Michael
Barberena, Ramiro
author_sort Fernández, María Victoria
title Varvarco obsidian: a new source in northwestern Patagonia (Neuquén, Argentina)
title_short Varvarco obsidian: a new source in northwestern Patagonia (Neuquén, Argentina)
title_full Varvarco obsidian: a new source in northwestern Patagonia (Neuquén, Argentina)
title_fullStr Varvarco obsidian: a new source in northwestern Patagonia (Neuquén, Argentina)
title_full_unstemmed Varvarco obsidian: a new source in northwestern Patagonia (Neuquén, Argentina)
title_sort varvarco obsidian: a new source in northwestern patagonia (neuquén, argentina)
description In northern Neuquén there are pyroclastic deposits containing obsidian nodules. The researches in the region revealed the main sources used by the people that lived there. A program of geoarchaeological and geochemical study was adopted to extend the knowledge of each source of obsidian. Thus, new occurrences of obsidian have been discovered, the most notable of which is the Varvarco obsidian presented here. We present the samples points conducted in the valley of Varvarco river, its geological and geomorphological context, the presence of obsidian, the type of deposit, presentation form, distribution and abundance. Then, we described the main characteristics observed under a petrographic microscope. Finally, we present the results of X-ray fluorescence and neutron activation geochemical analysis. The Varvarco obsidian differs from that of Cerro Huenul, but not from the obsidian Maule 1 and 2 from the XRF. NAA discriminates well this new obsidian from those already known in Neuquén. The results obtained allow to reinterpret the availability of good quality lithic resources and to revise the interpretations of mobility and interaction of populations in this region.
publisher Facultad de Filosofía y Humanidades. Museo de Antropología
publishDate 2019
url https://revistas.unc.edu.ar/index.php/antropologia/article/view/21865
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first_indexed 2024-09-03T20:01:31Z
last_indexed 2025-03-27T05:32:59Z
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