Saharan dust inputs to western North Atlantic Ocean with three years time series

International audience; In archeological record for the late Lower Pleistocene, manuports often represent a high proportion of the stone tool assemblages. Examples from well-known sites in Eurasia, such as; Olduvai Gorge Beds I and II, Dmanisi or Hummal, underline the significance of these items. Yet these materials are usually only summarily mentioned and their analysis is generally occulted by the, more thoroughly studies knapped materials. Archeostratigraphic Unit 2 (US2) of the Bois-de-Riquet site provides a good opportunity to evaluate the importance of imported materials for understanding hominin activities and interactions with carnivores. A few basalt cores and flakes were uncovered…

Pb isotopes as a reliable marker of early mining and smelting in the Northern Harz province (Lower Saxony, Germany)

Saharan dust inputs to North- Western Atlantic Ocean with three years time series

International audience; North Africa, the largest dust source worldwide, accounts for 55% of global continental dust emission [1]. These dusts can be transported over long distance, and significantly impact ocean biogeochemistry in the North Atlantic and the ecosystems of the North Tropical Atlantic Islands, after deposition through biogeochemical processes [2,3]. Yet, the inputs of Saharan dust to the North-Western Atlantic are not precisely measured. In this work, we present time series of dust deposition performed in Guadeloupe, an island situated in the Western North Atlantic Ocean. Atmospheric total deposition was continuously sampled on a weekly basis during three years (2015-2018). A…

Ancient mining near the Bibracte oppidum and its nowadays impact on ecosystems: A multidisciplinary approach

International audience