Paleogeographic and paleoclimatic variations of Pueyrredón Lake ? Posadas - Salitroso area during the Holocene and their relationship to occupational dynamics

LUIS R. HORTA A-B*, MARÍA A. MARCOS C, DAMIÁN L. BOZZUTO D, MARÍA V. MANCINI C, MARIANA SACCHI

PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2016

0031-0182

This work constitutes an integration of geological, archaeological and palynological data from Santa Cruz Province, Argentina, for assessing the influence of paleogeographic and paleoclimatic changes in relation to thedynamics of human occupation during the Holocene. In order to carry out its objectives, we surveyed different archaeological sites, we collected pollen samples from two archaeological sites, and described, sampled and dated stratigraphic profiles of lake levels. A digital elevationmodelwas also developed to reconstruct old flooded areas. Given the obtained results, we observe the influence that paleogeographic changes could have had on human occupational dynamics. These changes may have opened up new areas for both settlement and mobility. Pollen records suggest a vegetation change from grass steppe to shrub steppe during theMiddle Holocene,most likely related to climate changes identified at a regional scale.