Planktonic foraminifera of sediment core T89-40 on the Walvis Ridge, South Atlantic, supplement to: Ufkes, Els; Jansen, J H Fred; Schneider, Ralph R (2000): Anomalous occurrendes of Neogloboquadrina pachyderma (left) in a 420-ky upwelling record from Walvis Ridge (SE Atlantic). Marine Micropaleontology, 40(1-2), 23-42

Els Ufkes, J H Fred Jansen & Ralph R Schneider
Core T89-40, eastern Walvis Ridge between the subtropical gyre and Benguela coastal upwelling system, contains three types of levels of abundant left-coiled Neogloboquadrina pachyderma, a cold, eutrophic species, next to subtropical species. Type A peaks (362, 110 and 53-43 ky BP) are accompanied with high percentages of other eutrophic species. They are attributed to intensified upwelling in the Northern Benguela region. Type B peaks (129 and 92 ky BP) are accompanied by moderate (<48%) contributions...
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