Abstract

ESPINOSA, Silvana et al. LITHICRESOURCES IN CENTRAL-WESTSANTA CRUZPROVINCE: A PETROGRAPHIC APPROACH. Relaciones [online]. 2021, vol.46, n.1, pp.181-190. ISSN 0325-2221.

More than 25 years of ongoing archaeological research in the Andean andperi-Andean lake basins of the province of Santa Cruz have provided an extensive understanding of the regional availability of lithic raw materials. The first data based on microscopic determinations carried out with this record are presented. In this study, the geological and archaeological variability of rocks macroscopically identified as basalt is assessed: results show that they are more heterogeneous than what it was initiallyproposed. Furthermore, the location and determination ofsingular points of basalt and tuff availability throughout the region are suitable indicators to establish possible circulation routes of these raw materials. Consequently, a reduced scope of this circulation is analyzed within each basin.

Keywords : basalt; tuff - availability and heterogeneity; petrographic thin sections; South Patagonia.

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