Abstract

FAVIER DUBOIS, Cristian M.  and  ALBERTI, Jimena. Lithic raw materials in the northern coast of San Matias Gulf (Río Negro, Argentina): sources distribution and general trends in their exploitation. Rev. Mus. Antropol. [online]. 2014, vol.7, n.1, pp.00-00. ISSN 1852-060X.

Abstract The northern coast of San Matías Gulf (Río Negro, Argentina) has secondary sources of lithic raw materials suitable for flake activities, which are almost ubiquitous in the environment. These rocks sets have been redeposited by marine, fluvial or glaciofluvial action. Also, they are of variable length and possess diverse lithology. In this paper we describe the sources using information from geological maps, specific bibliography, and our surveys in the field. Furthermore, we examine the influence of variations in the coast line on the availability and accessibility to these sources, and include different rocks petrographic identification. Finally, we outline general trends in their use. The results indicate that siliceous rocks were the most exploited, followed by vulcanites and chalcedonies in third position. There were also differences in the rock exploitation in the two temporary blocks recognized for the coastal resources use in this coast.

Keywords : Northern coast of San Matías Gulf; Lithic raw material sources; Rocks exploitation; Coastal accretion.

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