Aurélien CHRISTOL, Université Jean Moulin Lyon 3 - UMR 5600 EVS, France
Valentina VILLA, UMR 7264 CEPAM - Université Côte d'Azur, France
This presentation proposes an overview of the geoarchaeological researches led on the northern coast of Peru in the Sechura Desert since ten years. The aim here is to underline the contributions of a combined interdisciplinary and multiscale approach in order to understand better the interactions between the pre-Hispanic societies and their environments. We put in perspective already published results with new results and we propose a first reflection on the geoarchaeological approach conducted on 2 main areas (Las Salinas and Nunura). The (micro) local scale is chosen at first to study finely through an intra-site (archaeological sites of Bayovar-01, Huaca Grande) and extra-site approach the conditions of access to natural resources as well as their use by the populations. We may cross data obtained on human and environmental dynamics (mean climate, ENSO, geomorphology) to define specific interactions on the last two millennia. The variety of studied environmental systems and the large dimensions of some of them requires to work far from the archaeological sites to understand better the global functioning of these coastal units and to confirm the models and scenarios determined at local scale. We use the infra-regional scale in the study of the Las Salinas to propose a more complete history of the shore, integrating results from the northern and the central parts of the depression. Then, taking into account several archaeological sites in their functional, chronological and geographical diversity, a first reflexion, at a regional scale, about the human and environmental dynamics in the Sechura Desert since 2000 years is proposed.
Keywords: Sechura Desert|Geoarchaeology|multiscale approach|geomorphology|socio-environmental dynamic