Datations radiométriques de l'extinction des grandes faunes pléistocènes au Pérou.

The discovery in northern Peru of fossil deposits belonging to large mammals allows the dating of the extinction of this fauna. The method based on disequilibrium within the uranium family (230Th234U) was used. The extinction occurred at the end of the Pleistocene (15-16 kyrs Cal BP) and is contemporaneous with the beginning of the deglaciation. Moreover, this dating, compared with results of excavations of palaeo-lndian " Paijân " sites, indicates that human groups in Peru did not play a significant role in the extinction of this large fauna

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