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Biosiliceous records in the western Tandilia range archaeological sites, argentina (Late PleistoceneLate Holocene): Paleoenvironmental considerations.The biosiliceous records from two archaeological sites Abrigo Los Pinos (LPn) and Abrigo La Grieta (LG) located in the eastern Tandilia range (Pampean region, Argentina) are analyzed. uman occupations in these sites contain a high diversity of archaeological remains (lithic, ceramic, bones, mineral pigments, charcoal and rock art). The long sequences, which span from the late Pleistocene to the late olocene allow us to study the palaeonvironmental setting of early occupations. Phytolith assemblages from the middle sections in both profiles are dominated by panicoid elements, indicating temperate (LG) and warm conditions (LPn), coinciding with moments of greatest human occupation sites (olocene in LG and early to middle olocene in LPn). owever, at basal and top levels of the sequences, environments are dominated by drier and cooler episodes which are mainly alternated by wet conditions in LG. The present analysis brings information about the plant component along the sequences and estimates that microenvironmental conditions inside the caves were fluctuating and comparable between anthropic levels.

revista del museo argentino de ciencias naturales

Paleoenvironmental Considerations of Archaeological Sites of the Eastern Tandilia Sierras (Late Pleistocene - Late Holocene) by means of the study of their biosilic records