The Antarctic Ice Sheet is both a major component of the global climate system (involved in global deep- and bottom-water formation and sea-level change) and a source of ambiguity in the oxygen isotopic record that limits the value of this record to other studies of Cenozoic paleoclimate. The proposal on which this leg was based is one of five linked proposals intended to extract the Cenozoic glacial history of Antarctica from the sediments of its continental margin. On Ocean Drilling Program (ODP) Leg 178, nine sites (Figs. 1, 2, and 3) were drilled on the continental margin of the Antarctic Peninsula. These included a transect of the outer continental shelf and complementary sites on a hemipelagic drift on the continental rise, both extending back 6-10 m.y., as well as shallow holes at two sites on the inner continental shelf that provide an ultrahigh resolution Holocene record.

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