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ABSTRACT. Eight sediment gravity cores, collected from theJoides a nd Drygalski basins, were a nal ysed in order to understa nd late Pleistocene-Holoce ne biogenic flux changes in th e Ross Sea, driven by pa leoenvironm ental changes. Core lithologies and magnetic-susceptibility depth profil es were used for core logging and stratig raphic correlation. Nineteen AMS radiocarbon dates of bulk organic matter were used to se t chronological const raints and ca lculate sediment accumulation rates. These rates, which vary from 1.4-38 cm ka I, were used to obtain the burial fluxes of biogenic components. Th e hig hest fluxes occur in the deepest parts of th e basins (TOC, 0.05-0.2 g cm 2 ka I; biogenic silica, 1.5-5 g cm 2 ka -I), whereas topographic highs show the lowest values (TOC, 0.01 -0.1 gcm 2 ka-I ; biogenic sili ca, 0.1 -1.4 gc m 2 ka-I ). Dra mati c changes in both physical properties a nd Ouxes reco rd the establishment of open m arine-sedimentati on conditions which occurred first in th eJoides basin and then, with a delay of ca. 6000 years, in th e Drygalski basin. Both TOC a nd biogeni c-sili ca fluxes increase through the Holocene, though slightl y differently. The hig h fluxes of both lOBe and biogenic Ba suggest that sediment accumulation at basin sites is strong ly influenced by lateral transport.