Sedimentology of core PS2564-3 and GeoB2110-4 ...

• Main Authors: Diekmann, Bernhard, Kuhn, Gerhard, Mackensen, Andreas, Petschick, Rainer, Fütterer, Dieter K, Gersonde, Rainer, Rühlemann, Carsten, Niebler, Hans-Stefan
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1999
• Subjects: Gravity corer Kiel type; Piston corer BGR type; M23/2; ANT-XI/4; Meteor 1986; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; South Atlantic in Late Quaternary: Reconstruction of Budget and Currents SFB261; Andreas; Antarctic; Southern Ocean; Antarc*; North Atlantic Deep Water; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.728656; https://doi.pangaea.de/10.1594/PANGAEA.728656

In the South Atlantic and adjoining Southern Ocean the kaolinite/chlorite-ratio in Late Quaternary sediments are an alternative deep water proxy to benthic foraminiferal proxies and carbonate preservation indices that is even suitable in regions with poor carbonate preservation. This paper shows the relationship between modern abyssal circulation and the kaolinite/chloriteratio and presents reconstructions of deep and bottom water advection based on the kaolinite/ chlorite proxy. We also discuss the limitations and future perspectives of the kaolinite/chlorite proxy. Latitudinal and water depth-related patterns of the kaolinite/chlorite-ratio in surface sediments correspond to the modern deep and bottom water mass distribution. Kaolinite originates from lowlatitudes and traces North Atlantic Deep Water (northern-source deep water) advection to the south. Chlorite from the southern high-latitudes is exported via northward advecting Antarctic Bottom Water and Circumpolar Deep Water (southern-source deep and ... : Supplement to: Diekmann, Bernhard; Kuhn, Gerhard; Mackensen, Andreas; Petschick, Rainer; Fütterer, Dieter K; Gersonde, Rainer; Rühlemann, Carsten; Niebler, Hans-Stefan (1999): Kaolinite and Chlorite as Tracers of Modern and Late Quaternary Deep Water Circulation in the South Atlantic and the Adjoining Southern Ocean. In: Fischer, G & Wefer, G (eds.), Use of Proxies in Paleoceanography - Examples from the South Atlantic, Springer, Berlin, Heidelberg, 285-313 ...