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Manejo diferencial de materias primas líticas en el sitio Bloque 1-Oquedad (lago San Martín, sudoeste de la provincia de Santa Cruz, Argentina)

01/2009;

ABSTRACT RESUMEN Este trabajo presenta el análisis del conjunto lítico del sitio Bloque 1-Oquedad, ubicado en la margen sur del Lago San Martín (provincia de Santa Cruz), y forma parte de las primeras investigaciones sistemáticas sobre la dinámica del poblamiento humano de las cuencas de los lagos San Martín y Tar durante el Holoceno. Los resultados sobre el material recuperado en un sondeo de 1 m 2 señalan un uso logístico del sitio a lo largo del tiempo y el predominio y uso más económico de materia prima alóctona (obsidiana) comparado con las locales. Este análisis es una vía de acceso a escala temporal en el aprovechamiento diferencial de las materias primas líticas y el uso del espacio por parte de las poblaciones cazadoras recolectoras durante el Holoceno. Las características de los primeros momentos de ocupación del sitio (ca. 9600 AP) son comparables con datos de sitios tempranos asociados al poblamiento inicial del sur de Patagonia. ABSTRACT This paper presents the analysis of the lithic assemblage at site Bloque 1-Oquedad, located on the margin of San Martín Lake (province of Santa Cruz).It is part of the first systematic research on hunter gatherer settlement dynamics on the San Martín and Tar lakes during the Holocene. Results on the artifacts recovered from an excavation unit of 1 m 2 indicate a logistic use of the site throughout time and the dominance and economic use of alloctonous lithic raw materials (obsidian) compared to local ones. This analysis is a way to approach differential raw materials treatment trough time, and land use by hunter-gatherers during the Holocene. Also, the characteristics of the first occupation moments of the site (ca. 9600 AP) are comparable to site data related with the initial settlement of southern Patagonia.

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    ABSTRACT: This paper discusses basic tendencies in the characteristics of the early archaeological record corresponding to human occupation near the eastern flank of the Andean range, at the southern end of South America. Lithic artifacts are analyzed within an organization of technology perspective and are discussed according to Borrero's ecological model of the peopling of Patagonia. The characteristics of the lithic artifacts along with raw material provenience at the oldest levels at sites Cerro Casa de Piedra 7 and Chorrillo Malo 2, match our expectations for an exploration or early colonization phase in the peopling of the space. In addition, the range of variation of tools is similar to that present at early sites located to the east of the area. Some differences at these sites are already evident. Among these are the higher tool deposition rates at sites located close to Pampa del Asador, a known source of black obsidian that was used by early inhabitants of Patagonia. This poses some new questions that should be addressed regionally, taking into account the regional availability of lithic resources.
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  • Observaciones geológicas en las inmediaciones del lago San Martín (Territorio de Santa Cruz) Boletín Ministerio de Agricultura. G Bonarelli, J J Nágera . 27.
  • La erosión en la región de los lagos San Martín y Tar. V Auer, D Cappannini . 7-27.

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