Abstract

TOLEDO, M.J.. Pleistocene Lujanense sequences in the type section: First 14C datings and their implications on stratigraphy, archaeology and history, Luján Jauregui, provincia de Buenos Aires. Rev. Asoc. Geol. Argent. [online]. 2005, vol.60, n.2, pp.417-424. ISSN 0004-4822.

The main purpose of this note is to communicate the first 14C dating of the Pleistocene sequences in the Lujan type section. A preliminary sequence stratigraphy model is presented in order to organize the lithostratigrafic units and provide a coherent stratigraphic framework to XIX century archeological discoveries. "Lujanense" sequences are dated between > 40,000 and >11,000 BP and is discussed the peopling evidence within this time interval. The base sequence boundary of the last glacial maximum (LGM) is identified and called "intralujanense" at 30.000 BP. This is a preliminary result of an integral project on sequence stratigraphy and archeological characterization of the Pleistocene of the northeastern pampas.

Keywords : Ameghino; Lujanense; Early peopling; Pleistocene; LGM; Pampas.

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