Ice-rafted debris of Late Cenozoic sediments from ODP Leg 104 holes, supplement to: Krissek, Lawrence A (1989): Late Cenozoic records of ice-rafting at ODP Sites 642, 643, and 644, Norwegian Sea: Onset, chronology, and characteristics of glacial/interglacial fluctuations. In: Eldholm, O; Thiede, J; Taylor, E; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 104, 61-74

Lawrence A Krissek
The abundance and composition of the upper Cenozoic terrigenous coarse-sand fraction (250 µm-2 mm) at ODP Sites 642, 643, and 644 were investigated to date the onset of significant ice-rafting in the Norwegian Sea, establish the regional chronology of ice-rafting, and determine the relative importance of global vs. regional controls on ice-rafting in this area. The first input of ice-rafted debris (IRD) occurs at approximately 2.9 Ma, with significant ice-rafting beginning at about 2.5 Ma....
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