A high-resolution Holocene record on the Southern Brazilian shelf: 1 paleoenvironmental implications 2 3

ABSTRACT 22 A high resolution multi-proxy record has been used to determine environmental changes during the Holocene on 23 the southern Brazilian shelf. Present oceanographic conditions reveal wind and freshwater input as determinants 24 of short-term productivity changes in the study area. Thus, magnetic susceptibility and grain size parameter 25 variations, together with proxies of productivity (organic carbon, carbon accumulation rate, Ba, Sr and Ca 26 content, Ba/Al, Ba/Ti and Al/Ti ratios) were analyzed and compared with proxies of redox condition (V/T