Distribution of benthic foraminifera with related sedimentological hydrographic parameter in the eastern Weddell Sea, Antarctica ...

• Main Authors: Mackensen, Andreas, Grobe, Hannes, Kuhn, Gerhard, Fütterer, Dieter K
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1990
• Subjects: Giant box corer; CTD/Rosette; ANT-II/4; ANT-IV/3; ANT-V/4; ANT-VI/3; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Antarc*; Antarctica; Weddell Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.552126; https://doi.pangaea.de/10.1594/PANGAEA.552126

Surface sediment samples taken with a vented box corer from the eastern Weddell Sea on four profiles perpendicular to the continental margin have been investigated for their benthic foraminiferal content. The live fauna was differentiated from empty tests comprising the foraminiferal death assemblage. Based on the dead assemblages, potential fossil assemblages were calculated to facilitate the analogy with late Neogene core material. Five distinct live assemblages inhabit the continental margin today. Six dead assemblages and five potential fossil assemblages, respectively, correspond to these biocoenoses.A predominantly calcareous live fauna dominated byTrifarina angulosa is correlated with strong bottom currents and sandy sediments at the shelf break and on the uppermost continental slope. Below this, on the upper slope down to 2000 m water depth, the predominantly calcareousBulimina aculeata assemblage coincides with the core of warm (>0°C) Weddell Deep Water and with fine and more organic-rich ... : Supplement to: Mackensen, Andreas; Grobe, Hannes; Kuhn, Gerhard; Fütterer, Dieter K (1990): Benthic foraminiferal assemblages from the eastern Weddell Sea between 68 and 73°S: distribution, ecology and fossilization potential. Marine Micropaleontology, 16(3-4), 241-283 ...