The ambitious goals of Leg 177 were (1) to document the biostratigraphic, biogeographic, paleoceanographic, and paleoclimatic history of the Southern Ocean during the Cenozoic, including the evolution and stability of the Antarctic cryosphere, and (2) to reconstruct paleoceanographic and paleoclimatic changes in the high-latitude South Atlantic during the Quaternary and late Neogene and determine the role the South Atlantic sector of the Southern Ocean played in global climate change on orbital and suborbital timescales. Full realization of these goals will take years or even decades, but substantial progress has been made toward achieving many of the leg objectives. Essential to all Leg 177 goals is the development of accurate chronologies for each site. First, we review the postcruise results of integrated isotopic, biomagnetic, and geomagnetic stratigraphies. Next, we present the postcruise paleoceanographic findings in chronological order through the Cenozoic.