Interaction of the South American Monsoon System and the Southern Westerly Wind Belt during the last 14Â kyr

► A sediment-core multi-proxy study off S Brazil covering last 14 kyr was performed. ► Rock magnetic and element data reveal weathering conditions in the La Plata Basin. ► Grain-size and diatom counts indicate source and trajectory of sediments. ► Northward (southward) migration of the shelf front during the Mid (Late) Holocene ► First time considering paleoclimatic elements of SAMS/SWWB in closer conjunction.