Benthic foraminifera analysis of two sediments cores from the northern Cape Basin in the eastern South Atlantic Ocean ...

• Main Authors: Schmiedl, Gerhard, Mackensen, Andreas
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1997
• Subjects: Gravity corer Kiel type; M12/1; M20/2; Meteor 1986; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; NADW; North Atlantic Deep Water; North Atlantic; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.728744; https://doi.pangaea.de/10.1594/PANGAEA.728744

Two late Quaternary sediment cores from the northern Cape Basin in the eastern South Atlantic Ocean were analyzed for their benthic foraminiferal content and benthic stable carbon isotope composition. The locations of the cores were selected such that both of them presently are bathed by North Atlantic Deep Water (NADW) and past changes in deep water circulation should be recorded simultaneously at both locations. However, the areas are different in terms of primary production. One core was recovered from the nutrient-depleted Walvis Ridge area, whereas the other one is from the continental slope just below the coastal upwelling mixing area where present day organic matter fluxes are shown to be moderately high. Recent data served as the basis for the interpretation of the late Quaternary faunal fluctuations and the paleoceanographic reconstruction.During the last 450,000 years, NADW flux into the eastern South Atlantic Ocean has been restricted to interglacial periods, with the strongest dominance of a ... : Supplement to: Schmiedl, Gerhard; Mackensen, Andreas (1997): Late Quaternary paleoproductivity and deep water circulation in the eastern South Altantic Ocean: Evidence from benthic foraminifera. Palaeogeography, Palaeoclimatology, Palaeoecology, 130(1-4), 43-80 ...