From Aquitains To Aquitano-Romans At Salies-De-Béarn:Impacts Of The Environnemental Changes On

A current multidisciplinary approach, dealing with environmnetal and archaeological investigations, allows us to recondiser salt activities wthin the Salies-de-Béarn territory (France), and on the whole diapir of the Leren anticline (45 km 2 ). Our research is focused on the three topics articulated on natural flow conditions of saliferous Waters, on geomorphological and hydrological evolution of alluvial plains, and on using terms and rates of these sources by protohistoric and Antique salt-miners. Archaeological and geoarchaeological data collected from preventative investigations realized in 2016 on the Herre and the Pyrénées Zone lead us to propose a focus on the transition between Les Aquitains (2nd to 1st c. BC) and les Aquitano-Roman (Haut-Empire). Significant topographic modifications that occured under anthropic forces show narrow dependence between the envrionmental contexts and sites of salt production. So, changing of Surface wter flows and reprofiling the Banks were increasing processes at the beginning of the first millennium BC. They indicate a major evolution in the formation of salt-mining sites throughout the considered period. Archaeologcial data show, at the same time, modification of evaporation techniques of salt production since the augusto-tiberienne period. It was a great evolution, because the principles of exploitation were still stable: their essentially seasonal carácter, the model organized by extensive scattering and not by nuclear grouping around the only supply site, seem to be conserved for a long period.