Abstract

BONNAT, Gustavo F.. ANALYSIS OF THE LITHITIC ASSEMBLAGE FROM THE INITIAL OCCUPATION (ca. 10000 YEARS BP) OF THE CUEVA EL ABRA SITE (BUENOS AIRES, ARGENTINA). Relaciones [online]. 2018, vol.43, n.1, pp.1-11. ISSN 0325-2221.

This paper presents the results of the lithic techno-morphological analysis of Cueva El Abra Site (Buenos Aires, Argentina) corresponding to the Late Pleistocene/Early Holocene transition (10270 ± 200 and 9834 ± 70 years BP). Based on the archaeological evidence Cueva El Abra was defined as a base camp of multiple activities. This cave presents the most abundant lithic assemblage recovered in stratigraphic sequence for this chronological period in the Humid Pampas sub-region. The results of the analysis evidence a wide diversity of rocks used for the manufacture ofartifacts, mainly the local Orthoarcites of Balcarce Formation (medium-fine, medium and coarse grain) and the non-local Orthoarcites of Sierras Bayas Group (fine grain and better quality for flintknapping). On this rock, almost all the stages of the operative chain are evidenced.

Keywords : Lithic technology - operational chain - hunter-gatherers - Late Pleistocene/ Early Holocene - Pampa Region.

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