The organic matter deposited in surface sediments of Hole 1229E (0–700 cmbsf) shows strong elemental and isotopic signature changes that are not exclusively due to fluctuations in OM sources. Strong shifts in Corg are not entirely controlled by terrigenous OM inputs in this system and thus apparent terrigenous isotopic and elemental signatures seem to be derived from diagenetic processes and productivity fluctuations in addition to potential source changes. It is yet difficult to estimate the true extent of glacial–interglacial changes in OM inputs and signatures in these sediments. However, our elemental, isotopic, and molecular data suggest that there was a decrease in input of terrigenous OM during the LGM–Holocene transgression. These results are consistent with prior paleoceanographic work in continental margins, which show that terrigenous OM influx was more important to these environments during glacial than interglacial periods (Jasper and Gagosian, 1990, 1993; Visser et al., 2004). The analysis of deeper sections of Hole 1229E and of Hole 1228B, which covers a longer time period with better chronological constraint (Fink et al., 2006), should provide an ideal time series to further evaluate the glacial–interglacial changes in organic matter input to this system.