Planktonic and benthic stables Isotopes, age model and carbon analysis of HUD91/039 from the northernmost Baffin Bay ...

• Main Authors: Knudsen, Karen Luise, Stabell, Bjorg, Seidenkrantz, Marit-Solveig, Eiriksson, Jón, Blake, Weston Jr
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2008
• Subjects: Baffin Bay; Baffin; Greenland; Planktonic foraminifera; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.785726; https://doi.pangaea.de/10.1594/PANGAEA.785726

A multiproxy study of palaeoceanographic and climatic changes in northernmost Baffin Bay shows that major environmental changes have occurred since the deglaciation of the area at about 12 500 cal. yr BP. The interpretation is based on sedimentology, benthic and planktonic foraminifera and their isotopic composition, as well as diatom assemblages in the sedimentary records at two core sites, one located in the deeper central part of northernmost Baffin Bay and one in a separate trough closer to the Greenland coast. A revised chronology for the two records is established on the basis of 15 previously published AMS 14C age determinations. A basal diamicton is overlain by laminated, fossil-free sediments. Our data from the early part of the fossiliferous record (12 300 - 11 300 cal. yr BP), which is also initially laminated, indicate extensive seasonal sea-ice cover and brine release. There is indication of a cooling event between 11 300 and 10 900 cal. yr BP, and maximum Atlantic Water influence occurred ... : Supplement to: Knudsen, Karen Luise; Stabell, Bjorg; Seidenkrantz, Marit-Solveig; Eiriksson, Jón; Blake, Weston Jr (2008): Deglacial and Holocene conditions in northernmost Baffin Bay: sediments, foraminifera, diatoms and stable isotopes. Boreas, 37(3), 346-376 ...