Ice rafted debris distribution in 16 sediment cores from the South Atlantic ...

• Main Authors: Diekmann, Bernhard, Fütterer, Dieter K, Grobe, Hannes, Hillenbrand, Claus-Dieter, Kuhn, Gerhard, Michels, Klaus, Petschick, Rainer, Pirrung, Michael
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2003
• Subjects: Gravity corer Kiel type; MultiCorer; Piston corer BGR type; ANT-VI/3; ANT-VIII/3; ANT-VIII/6; ANT-IX/4; ANT-X/5; ANT-XI/2; ANT-XI/4; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Antarc*; Antarctic; Antarctic Peninsula; Iceberg*
• Online Access: https://dx.doi.org/10.1594/pangaea.732965; https://doi.pangaea.de/10.1594/PANGAEA.732965

Terrigenous sediment parameters in modern sea-bottom samples and sediment cores of the South Atlantic are used to infer variations in detrital sources and modes of terrigenous sediment supply in response to environmental changes through the late Quaternary climate cycles. Massaccumulation rates of terrigenous sediment and fluxes of ice-rafted detritus are discussed in terms of temporal variations in detrital sediment input from land to sea. Grain-size parameters ofterrigenous mud document the intensity of bottom-water circulation, whereas clay-mineral assemblages constrain the sources and marine transport routes of suspended fine-grained particulates, controlled by the modes of sediment input and patterns of ocean circulation. The results suggest low-frequency East Antarctic ice dynamics with dominant 100-kyr cycles and high rates of Antarctic Bottom Water formation and iceberg discharge during interglacial times. In contrast, the more subpolar ice masses of the Antarctic Peninsula also respond to short-term ... : Supplement to: Diekmann, Bernhard; Fütterer, Dieter K; Grobe, Hannes; Hillenbrand, Claus-Dieter; Kuhn, Gerhard; Michels, Klaus; Petschick, Rainer; Pirrung, Michael (2004): Terrigenous sediment supply in the polar to temperate South Atlantic: land-ocean links of environmental changes during the late Quaternary. In: Wefer, G; Mulitza, S & Ratmeyer, V (eds.), The South Atlantic in the Late Quaternary: Reconstruction of Material Budget and Current Systems. Springer-Verlag, Berlin, Heidelberg, New York, 375-399 ...