Piston core TN057-13 from the Atlantic sector of the Southern Ocean contains layers of ice-rafted detritus deposited during the last glacial period that mainly consist of volcanic glass and ash (Kanfoush et al. (2000, 2002)). Most of the ash layers have equivalents in Antarctic ice cores, providing a potential means of correlation between South Atlantic marine sediment and Antarctic ice cores. Our analysis of clear mineral grains indicates South Sandwich Islands as the predominant source, similar to that inferred for the volcanic glass (Nielsen et al. submitted). In addition, quartz and feldspar with possible Antarctic origin occur in conjunction with postulated episodes of Antarctic deglaciation. We conclude that while sea ice was the dominant ice rafting agent in the Polar Frontal Zone of the South Atlantic during the last glacial period, a minor component of the South Atlantic IRD also reflects East Antarctic ice sheet dynamics.