Stable isotope analysis of benthic foraminifera and sedimentology on ODP Site 162-984, supplement to: Bartoli, Gretta; Sarnthein, Michael; Weinelt, Mara (2006): Late Pliocene millennial-scale climate variability in the northern North Atlantic prior to and after the onset of Northern Hemisphere glaciation. Paleoceanography, 21(4), PA4205


Sediments recovered at ODP Site 984 on the Reykjanes Ridge provided multicentennial-scale records (SST, planktic and benthic delta18O, IRD and magnetic susceptibility) of Late Pliocene climate change over the onset of Northern Hemisphere glaciation (NHG), 2.95-2.82 Ma. Short-term climate variations prior and after the onset of continent-wide glaciation were compared to test the hypothesis, whether Dansgaard-Oeschger (DO) cycles may have been triggered by continental ice breakouts. By means of spectral analyses for two selected interglacial stages prior to and after NHG (G15 and G1), we found that climate variability resembled that of the Holocene and the mid-Pliocene warm period. In contrast, DO-like periodicities near 1470, 2900, and 4400 yr indeed only occurred in glacial stages after the onset of NHG (G14, G6, and 104), but hardly in stage G20 prior to the onset. These results suggest a causal link between DO cycles and the Late Pliocene onset of major NHG and ice breakouts in the North Atlantic. This data set provides all primary data and spectral analysis related to this scientific work.

The results of the spectral analysis are stored as individual files at doi:10.1594/PANGAEA.477959

Related Identifier
Metadata Access
Creator Bartoli, Gretta; Sarnthein, Michael; Weinelt, Mara
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2006
Funding Reference German Science Foundation, 5468851
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Language English
Resource Type Supplementary Collection of Datasets; Collection
Format application/zip
Size 8 datasets
Discipline Earth System Research
Spatial Coverage (-24.082W, 61.425S, -24.082E, 61.425N); North Atlantic Ocean
Temporal Coverage Begin 1995-07-24T00:00:00Z
Temporal Coverage End 1995-07-29T00:00:00Z