Ornamental beads in a hunter-gatherers context from the Córdoba Province: a mineralogical and microstructural analysis of a “Borus” shell
In this article, we analyze the mineralogical composition and microstructure of the “Borus” gastropod (Megalobulimus lorentzianus), which is local to the Córdoba Province. The gastropod was compared against a typical ornamental bead from a hunter-gatherers archaeological site located in the northwes...
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Español |
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Instituto de Arqueología, Facultad de Filosofía y Letras, Universidad de Buenos Aires
2018
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| Acceso en línea: | https://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/4234 https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=arqueo&d=4234_oai |
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I28-R145-4234_oai2025-11-17 Boretto, Gabriella M. Gordillo, Sandra Izeta, Andrés Colombo, Fernando Martinelli, Marisa Cattáneo, Roxana 2018-02-01 In this article, we analyze the mineralogical composition and microstructure of the “Borus” gastropod (Megalobulimus lorentzianus), which is local to the Córdoba Province. The gastropod was compared against a typical ornamental bead from a hunter-gatherers archaeological site located in the northwest region of the same province, with the aim of producing new tools to identify the raw materials used in bead manufacture. An X-ray diffraction analysis of a modern “Borus” shell specimen indicated that from a mineralogical standpoint it was composed entirely of aragonite, a calcium carbonate polymorph (CaCO3) that crystallizes in the orthorhombic system. In addition, an analysis of its microstructure using laser electron confocal microscope identified a prismatic microstructure. These same analyses, undertaken on a bead from the archaeological site of Alero Deodoro Roca (Ongamira valley, Córdoba Province) revealed the same mineralogical composition and prismatic arrangement, leading to interpret the bead as having a taxonomic affiliation to “Borus” shell. With the addition of new materials, in the future this type of analysis will provide insights regarding specialization in the elaboration of beads and exchange networks in the central region of Argentina. El objetivo de este trabajo es analizar la composición mineralógica y la microestructura del gasterópodo “Borus” (Megalobulimus lorentzianus) que habita en la provincia de Córdoba y compararla con una cuenta ornamental procedente de un sitio arqueológico de cazadores-recolectores del noroeste de la misma provincia y de esta manera contar con nuevas herramientas para identificar las materias primas utilizadas en su fabricación. El análisis de difracción de rayos X en base a un ejemplar actual indicó que la concha de “Borus” está compuesta en su totalidad de aragonita, polimorfo de carbonato de calcio (CaCO3) que cristaliza en el sistema ortorrómbico. Además, el análisis de su microestructura, a través de microscopía electrónica y láser confocal, mostró una disposición prismática de los cristales. Por otro lado, este último análisis realizado en una cuenta proveniente del sitio arqueológico Alero Deodoro Roca (valle de Ongamira, provincia de Córdoba) también indicó la misma composición mineralógica y disposición prismática, lo que se interpreta como un elemento de afiliación al taxón mencionado. Con la incorporación de nuevos materiales este tipo de análisis podrá, a futuro, mejorar el conocimiento respecto a la especialización en la confección de cuentas y posibles redes de intercambio en la región central de Argentina. application/pdf https://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/4234 10.34096/arqueologia.t24.n1.4234 spa Instituto de Arqueología, Facultad de Filosofía y Letras, Universidad de Buenos Aires https://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/4234/3785 Arqueología; Vol. 24 No. 1 (2018): January-April; 213-223 Arqueología; Vol. 24 Núm. 1 (2018): enero-abril; 213-223 1853-8126 0327-5159 Megalobulimus lorentzianus Composición mineralógica Microestructura Cazadores-recolectores Ongamira Córdoba Megalobulimus lorentzianus Mineralogical composition Microstructure Hunter-gatherers Ongamira Córdoba Ornamental beads in a hunter-gatherers context from the Córdoba Province: a mineralogical and microstructural analysis of a “Borus” shell Cuentas ornamentales en un contexto de cazadores-recolectores de la provincia de Córdoba: análisis mineralógico y microestructural de la concha de “Borus” info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=arqueo&d=4234_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| language |
Español |
| orig_language_str_mv |
spa |
| topic |
Megalobulimus lorentzianus Composición mineralógica Microestructura Cazadores-recolectores Ongamira Córdoba Megalobulimus lorentzianus Mineralogical composition Microstructure Hunter-gatherers Ongamira Córdoba |
| spellingShingle |
Megalobulimus lorentzianus Composición mineralógica Microestructura Cazadores-recolectores Ongamira Córdoba Megalobulimus lorentzianus Mineralogical composition Microstructure Hunter-gatherers Ongamira Córdoba Boretto, Gabriella M. Gordillo, Sandra Izeta, Andrés Colombo, Fernando Martinelli, Marisa Cattáneo, Roxana Ornamental beads in a hunter-gatherers context from the Córdoba Province: a mineralogical and microstructural analysis of a “Borus” shell |
| topic_facet |
Megalobulimus lorentzianus Composición mineralógica Microestructura Cazadores-recolectores Ongamira Córdoba Megalobulimus lorentzianus Mineralogical composition Microstructure Hunter-gatherers Ongamira Córdoba |
| description |
In this article, we analyze the mineralogical composition and microstructure of the “Borus” gastropod (Megalobulimus lorentzianus), which is local to the Córdoba Province. The gastropod was compared against a typical ornamental bead from a hunter-gatherers archaeological site located in the northwest region of the same province, with the aim of producing new tools to identify the raw materials used in bead manufacture. An X-ray diffraction analysis of a modern “Borus” shell specimen indicated that from a mineralogical standpoint it was composed entirely of aragonite, a calcium carbonate polymorph (CaCO3) that crystallizes in the orthorhombic system. In addition, an analysis of its microstructure using laser electron confocal microscope identified a prismatic microstructure. These same analyses, undertaken on a bead from the archaeological site of Alero Deodoro Roca (Ongamira valley, Córdoba Province) revealed the same mineralogical composition and prismatic arrangement, leading to interpret the bead as having a taxonomic affiliation to “Borus” shell. With the addition of new materials, in the future this type of analysis will provide insights regarding specialization in the elaboration of beads and exchange networks in the central region of Argentina. |
| format |
Artículo publishedVersion |
| author |
Boretto, Gabriella M. Gordillo, Sandra Izeta, Andrés Colombo, Fernando Martinelli, Marisa Cattáneo, Roxana |
| author_facet |
Boretto, Gabriella M. Gordillo, Sandra Izeta, Andrés Colombo, Fernando Martinelli, Marisa Cattáneo, Roxana |
| author_sort |
Boretto, Gabriella M. |
| title |
Ornamental beads in a hunter-gatherers context from the Córdoba Province: a mineralogical and microstructural analysis of a “Borus” shell |
| title_short |
Ornamental beads in a hunter-gatherers context from the Córdoba Province: a mineralogical and microstructural analysis of a “Borus” shell |
| title_full |
Ornamental beads in a hunter-gatherers context from the Córdoba Province: a mineralogical and microstructural analysis of a “Borus” shell |
| title_fullStr |
Ornamental beads in a hunter-gatherers context from the Córdoba Province: a mineralogical and microstructural analysis of a “Borus” shell |
| title_full_unstemmed |
Ornamental beads in a hunter-gatherers context from the Córdoba Province: a mineralogical and microstructural analysis of a “Borus” shell |
| title_sort |
ornamental beads in a hunter-gatherers context from the córdoba province: a mineralogical and microstructural analysis of a “borus” shell |
| publisher |
Instituto de Arqueología, Facultad de Filosofía y Letras, Universidad de Buenos Aires |
| publishDate |
2018 |
| url |
https://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/4234 https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=arqueo&d=4234_oai |
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