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Accueil du site > Séminaires, conférences et RS > Réunions Scientifiques

« Looking inside the teeth : Palaeoenvironmental reconstruction of MIS 3 at Northeastern Iberia through oxygen isotope composition of rodent remains » et « Neanderthal subsistence strategies at Abric Romani (Spain) and Abri du Maras (France) »

Mardi 5 décembre 2017, 13h30 (Amphi de l’IPH)

par Daujeard Camille - publié le

« Looking inside the teeth : Paleoenvironmental reconstruction of MIS 3 at Northeastern Iberia through oxygen isotope composition of rodent remains » par Monica Fernandez Garcia

Figure. « Precipitation of silver phosphate crystals in a thermostatic bath for the subsequent mass spectrometer analysis of δ18O ».

Taking into account the closer relationship between hunter-gathered societies with their environment, the knowledge of the ecological landscapes that surround these occupations is essential to reach a better understanding of evolution processes. Small mammals (insectivores, rodents and bats) had become one of the most useful tools to reconstruct the ecology and the environment of the Quaternary. Recent studies have demonstrated the existent relation between the δ18O from biogenetic phosphates from rodents with the δ18O from meteoric water ; that at the same time can be potentially related with paleotemperatures. This thesis explore the paleoenvironment reconstructions based on the oxygen isotope composition of tooth phosphates (δ18O) from the enamel of rodent teeth (Muroidea) to approach to the Marine Isotope Stage 3 (MIS 3, ca. 30-60 ka BP) at Northeastern Iberia, where some of the last Neanderthal settlements occurred. The thesis included four MIS 3 sites (Abric Romaní rockshelter, Teixoneres cave, Arbreda cave and Xaragalls cave) and current referential samples.

« Neanderthal subsistence strategies at Abric Romani (Spain) and Abri du Maras (France) » par Juan Marin

The actual knowledge over Neanderthal culture shows a high degree of organizational complexity. The zooarchaeological studies indicate that they primary food source consisted of large ungulates. Hunting played a central role in the system of organization of these groups. Therefore four research lines combined between them are essential to study Neanderthal skills : taphonomical analyses, construction of anatomical profiles, construction of mortality profiles and refitting of faunal remains. As a result is possible to establish some information about Neanderthal behaviour : the access and consumption of the animal carcasses ; formation or the integrity of the assemblages ; spatial distribution and occupational events ; transport strategies of animal carcasses ; hunting strategies. These analyses are applied in the Middle Palaeolithic sites of Abric Romaní (Spain) and Abri du Maras (France). Those two sites were used as referential site by the Neanderthal groups. The aim is to obtain sufficient data to compare Neanderthal populations of Western Europe and establish possible superregional subsistence models. These studies can provide a better understanding of the social and ecological context, and the type of occupations and management of the different territories. The study of the Mediterranean basin sites could provide information about Neanderthal’s regional culture based on particular subsistence and environmental adaptations.