(Table 1) Age determination of sediment cores CH115-12PG-PC and GeoB1711-4 ...

• Main Authors: Little, Mark G, Schneider, Ralph R, Kroon, Dick, Price, B, Summerhayes, Colin P, Segl, Monika
• Format: Dataset
• Language: English
• Published: PANGAEA 1997
• Subjects: Event label; DEPTH, sediment/rock; Age, dated; Age, dated standard error; Calendar age; Calendar age, standard error; Age, dated material; Laboratory code/label; Composite Core; Gravity corer Kiel type; Age, 14C AMS; Age, 14C milieu/reservoir corrected -400 yr; Chain115; M20/2; Chain; Meteor 1986; Greenland; ice core; Ice Sheet; Neogloboquadrina pachyderma; North Atlantic; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.868915; https://doi.pangaea.de/10.1594/PANGAEA.868915

Planktonic foraminifera recovered from two cores in the northern Benguela upwelling system reveal a history of rapid events with a variability at sub-Milankovitch frequencies during the last 140 kyr. The "cold-water" planktonic foraminifer, left coiling Neogloboquadrina pachyderma (Ehrenberg), shows rapid fluctuations in relative abundance, indicating changes in upwelling intensity. The periods of high abundance in left coiling N. pachyderma are referred to as "PS events" (pachyderma sinistral) and indicate increased intensity and zonality of the South Atlantic trade winds controlling the Benguela upwelling system. The good correlation between PS events, the North Atlantic Heinrich events, and the Dansgaard-Oeschger cycles from the Greenland Ice Sheet Program (GISP2) ice core suggests large-scale global oceanographic or climatic teleconnections between the South and North Atlantic via the trade wind system. The radiocarbon constrained timing of PS events younger than 45 kyr indicates that the South Atlantic ... : Dataset was updated on 2018-01-28: dataset was assigned to a wrong publication. ...