Sedimentology, foraminiferal assemblage, and isotope record of the Agulhas Bank region ...

• Main Authors: Rau, Amanda, Roger, J, Lutjeharms, Johann, Giraudeau, Jacques, Lee-Thorp, Julia, Chen, Min-Te, Waelbroeck, Claire
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2002
• Subjects: Calypso Corer; MD105; Marion Dufresne 1995; International Marine Global Change Study IMAGES; Neogloboquadrina pachyderma
• Online Access: https://dx.doi.org/10.1594/pangaea.736634; https://doi.pangaea.de/10.1594/PANGAEA.736634

The Agulhas Bank region, south of Africa, is an oceanographically important and complex area. The leakage of warm saline Indian Ocean water into the South Atlantic around the southern tip of Africa is a crucial factor in the global thermohaline circulation. Foraminiferal assemblage, stable isotope and sedimentological data from the top 10 m of core MD962080, recovered from the western Agulhas Bank Slope, are used to indicate changes in water mass circulation in the southeastern South Atlantic for the last 450 kyr. Sedimentological and planktonic foraminiferal data give clear signals of cold water intrusions. The benthic stable isotope record provides the stratigraphic framework and indicates that the last four climatic cycles are represented (i.e. down to marine isotope stage (MIS) 12). The planktonic foraminiferal assemblages bear a clear transitional to subantarctic character with Globorotalia inflata and Neogloboquadrina pachyderma (dextral) being the dominant taxa. Input of cold, subantarctic waters into ... : Supplement to: Rau, Amanda; Roger, J; Lutjeharms, Johann; Giraudeau, Jacques; Lee-Thorp, Julia; Chen, Min-Te; Waelbroeck, Claire (2002): A 450-kyr record of hydrological conditions on the western Agulhas Bank Slope, south of Africa. Marine Geology, 180(1-4), 183-201 ...