Stable oxygen isotope ratios of foraminifera from late middle Eocene sediments of ODP Site 171-1052 from Blake Plateau, West Atlantic Ocean (Appendix), supplement to: Wade, Bridget S; Kroon, Dick (2002): Middle Eocene regional climate instability: Evidence from the western North Atlantic. Geology, 30(11), 1011-1014


High-resolution (~3 k.y.) delta18O records from middle Eocene mixed-layer dwelling planktonic foraminifera from the western North Atlantic show pronounced (>1‰) variability. The magnitude of change is greater than that seen in open-ocean Pleistocene records, but could not have been caused by ice-volume and/or sea-level fluctuations. Instead, the oxygen isotope shifts resulted primarily from large oscillations in sea-surface temperatures and indicate that the regional paleoceanography of the middle Eocene western North Atlantic was not consistently warm or stable. The large shifts in sea-surface temperatures could reflect variations in the position of the Gulf Stream relative to Blake Nose or variations in upwelling intensity.

Related Identifier<1011:MERCIE>2.0.CO
Metadata Access
Creator Wade, Bridget S; Kroon, Dick
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2002
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 2744 data points
Discipline Earth System Research
Spatial Coverage (-76.627 LON, 29.951 LAT); Blake Nose, North Atlantic Ocean