Detailed foraminifera] analyses have been undertaken of the Kudu 9A-2 and 9A-3 boreholes, and results compared with the adjacent hole 9A-1, drilled in ]973-74. All three boreholes intersected much the same sequence and all bottomed in interbedded non-marine/marginal marine sediments and volcanics. Foraminifera indicate the oldest datable sediment to be of Late Barremian age, though the lowest 200 to 300 m of section in each hole contain no datable faunas. The Late Barremian to Coniacian sediments are essentially distal, having accumulated in marine environments from outermost shelf to base of slope. The Early Aptian organic-rich interval between horizons P and P] is characterised by almost exclusively planktonic assemblages of foraminifera and Radiolaria. A major mid-Aptian break (corresponding with horizon P) and a break across the Cenomanian-Turonian boundary (just below horizon N) are subcontinent-wide events recognisable off all three coasts of South Africa. Sedimentation rates increased substantially in the Santonian and an episode of shallowing upward commenced, probably due to progradation. Campanian and later deposits are all typically outermost shelf. Major breaks occur from the Early Maastrichtian to the latest Palaeocene, from the earliest Early Eocene to the latest Late Eocene, and probably also from the mid-Oligocene to the Early Miocene. Top-hole sampling is poor, but from sea-loor data, thin Holocene unconformably overlie Middle Miocene (later Langhian) deposits.