Abstract

HORTA, Luis R et al. Register of paleobametric fluctuations of the Pueyrredon-Posadas-salitroso Lacustrine System during the Late Pleistocene? -Early holocene (Northwestern of Santa Cruz, Argentina. Ser. correl. geol. [online]. 2011, vol.27, n.2, pp.100-109. ISSN 1666-9479.

The palaeocoast line positions of the lacustrine system of Pueyrredón - Posadas - Salitroso lakes were determined through the study of the lacustrine deposits, which were dated between the Late Pleistocene? - Early Holocene, together with a digital elevation model (DEM). This has demonstrated the link among them verified on some specific palaeoheight levels. In this research, paleo-bathymetric geoindicators, as relative height of glaci-lacustrine, coastal sand and fandelta deposits onto the southern margin of Pueyrredon Lake, and absolute dating techniques (AMS & 14C), fossil trace and fossil and current malacofauna comparison were used in order to develop palaeoenvironment interpretations.

Keywords : Lacustrine System; Paleobathymetric Fluctuations; Late Pleistocene - Holocene Early; Pueyrredón Lake.

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