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Título : Palaeoenvironmental reconstruction of La Olla, a Holocene archaeological site in the Pampean coast (Argentina)
Autor(es) : Blasi, Adriana
Politis, Gustavo
Bayón, María Cristina
Palabras clave : Cazadores-recolectores costeros; Esteras microbianas; Adaptaciones costeras; Proceso de formación en el lugar; Holoceno; La Olla
Fecha de publicación : 2013
Editorial : Academic Press Ltd. Elsevier Science Ltd.
Referencia bibliográfica : Blasi, A., Politis, G. & Bayón, M. C (2013). Palaeoenvironmental reconstruction of La Olla, a Holocene archaeological site in the Pampean coast (Argentina). Journal of Archaeological Science 40, 1554-1567. Recuperado de http://www.sciencedirect.com/science/article/pii/S0305440312004189 http://dx.doi.org/10.1016/j.jas.2012.09.016
Resumen : The evolution of littoral palaeoenvironments in the southern Pampas region of Argentina towards the end of the early Holocene and the beginning of the mid Holocene is discussed, and the formation processes of the archaeological site of La Olla are analysed. This site is located in the intertidal zone of the present beach and is remarkably well-preserved. The human occupation at the site has been dated at between 7400 and 6480 yrs BP, and is interpreted as a place for the processing and consumption of the southern fur seal (Arctocephalus australis) and southern sea-lion (Otaria flavescens). It is concluded that biostabilization by microbial mats of the sedimentary structures and archaeological remains that developed and are present on the tidal flat prevented their erosion by wind, turbulence currents and waves. This is what has permitted the exceptional preservation of the site. On the basis of the analyses of one of the sectors of the site it can be concluded that the sedimentary succession of the La Olla site is the result of the coastal environmental changes during the earlyemid Holocene in the pre-maximum transgressive episode. During this interval a tidal flat developed on the Pleistocene abrasion platform. Human occupation occurred during the formation of mixohaline marsh, an upper intertidalelower supratidal zone ecosystem.
URI : http://repositoriodigital.uns.edu.ar/handle/123456789/3857
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