Phase relationships between millennial-scale events 64,000–24,000 years ago
TL;DR: In this paper, a core recovered on the Iberian margin off southern Portugal can be correlated with Greenland ice cores using oxygen isotope variability in planktonic foraminifera which closely matches the ice core records of temperature over Greenland.
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Abstract: A core recovered on the Iberian margin off southern Portugal can be correlated with Greenland ice cores using oxygen isotope variability in planktonic foraminifera which closely matches the ice core records of temperature over Greenland. Our age model identifies the base of every interstadial between 64,000 and 24,000 years ago and uses the Greenland Ice Core Project (GRIP) timescale. The oxygen isotope signal in benthic foraminifera (on this GRIP-based timescale) is quite different from the planktonic record and resembles the temperature record over Antarctica when this is synchronized with Greenland using the record of methane in the atmospheric air in the polar ice cores. We interpret the benthic record as indicating significant fluctuations in ice volume during millennial events, and we suggest that Antarctic temperature changed as a function of ice volume.
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Citations
Coccolithophore and benthic foraminifera distribution patterns in the Gulf of Cadiz and Western Iberian Margin during Integrated Ocean Drilling Program (IODP) Expedition 339
Barbara Balestra,Patrick Grunert,Blanca Ausín,David A. Hodell,José A. Flores,Carlos A. Alvarez-Zarikian,Francisco Javier Hernandéz-Molina,Dorrik A. V. Stow,Werner E. Piller,Adina Paytan +9 more
TL;DR: For the first time during an Integrated Ocean Drilling Program (IODP) Expedition (Exp. 339, Mediterranean Outflow) water samples for living coccolithophore distributions and mudline samples for coccoliths, benthic foraminifera, and geochemical analyses in the underlying surface sediments were collected as discussed by the authors.
19
Millennial changes in North Atlantic oxygen concentrations
TL;DR: Hoogakker et al. as mentioned in this paper used bottom water [O2] reconstructions from two cores: (1) MD95-2042 from the deep northeast Atlantic and (2) ODP Site 1055 from the intermediate northwest Atlantic.
Mediterranean Outflow Water variability during the Early Pleistocene
TL;DR: In this article, the first benthic foraminifera stable oxygen and carbon isotope records and grain-size data from IODP Expedition 339 Site U1389 were presented.
Application and quality of X-Ray fluorescence core scanning in reconstructing late Pleistocene NW African continental margin sedimentation patterns and paleoclimate variations
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TL;DR: In this article, the authors present a survey of the state of the art in this area: http://www.theguardian.com/blogs/blogs-and-blogs.
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