Stable oxygen isotope ratios of planktonic foraminifera (Appendix A) ...

• Main Authors: Billups, Katharina, Lindley, Carolyn, Fisler, J, Martin, Pamela
• Format: Dataset
• Language: English
• Published: PANGAEA 2006
• Subjects: Sample code/label; DEPTH, sediment/rock; AGE; Globigerinoides sacculifer, δ18O; Neogloboquadrina dutertrei, δ18O; Globigerinoides ruber, δ18O; Composite Core; DSDP/ODP/IODP sample designation; Mass spectrometer GV Instruments Isoprime; Leg172; Joides Resolution; Ocean Drilling Program ODP; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.742604; https://doi.pangaea.de/10.1594/PANGAEA.742604

We present Globigerinoides ruber, G. sacculifer and Neogloboquadrina dutertrei oxygen isotope records from northwestern subtropical Atlantic Site 1058 spanning the mid Pleistocene (~600 to 400 ka). The high temporal resolution of these records (~800 yr) allows us to compare millennial-scale climate signals during one of the most extreme glacial periods of the Pleistocene (Marine Isotope Stage (MIS) 12) to an earlier, less extreme glacial (MIS 14), as well as to two full interglacial intervals (MIS 13 and MIS 15). We observe excellent agreement in the timing and amplitude of variations between the surface-most dwelling species G. ruber and Northern Hemisphere insolation during the two interglacial periods. There is some expression of Northern Hemisphere insolation during glacial MIS 14; however, during the more extreme glacial MIS 12 Northern Hemisphere insolation patterns are not apparent in any of the planktonic foraminiferal d18O records. Insolation remains relatively high, but d18O values increase toward ... : Depth, sediment is composite depth (mcd) ...