Foraminifera oxygen isotope record

Figure 7. (a) Vostok ice core CO2 record reported as ppmv (part per million by volumbe) (9). (b) Ocean sediment core (G. ruber, a species of foraminifera) oxygen isotope record reported as the deviation in parts per thousand from the marine carbonate standard V-PDB (both sea-surface temperature and changes in the bulk seawater oxygen isotope composition affect this record) (49), and boron isotope based pH values reported relative to the seawater pH scale (large squares) (50). (c). Continental ice volume signal from seawater reported... 

Mulitza, S., Donner, B., Fischer, G, Paul, A., Patzold, J., Riihlemann, C. Segl, M., 2003. The South Atlantic oxygen isotope record of planktic foraminifera. In The South Atlantic in the Late Quaternary Reconstruction of Material Budgets and Current Systems. Wefer, G., Mulitza, S., and Ratmeyer, V., editors. Springer, Berlin, pp. 121-142. 

The Quaternary record from marine foraminifera exhibits periodicities consistent with some type of orbital and precessional forcing. Particularly over the last 600 k.y., the frequency content and the amplitudes of the oxygen isotope record are particular striking, showing forcing with 23, 41, and 100-k.y. periodicity (Fig. 11). The typieal... 

For the period prior to the first onset of Antarctic glaciation (around 33 Ma), oxygen isotope variations in global benthic foraminifera records reflect temperature... 

Following Emiliani s (1955) discovery, other laboratories established the capability to apply oxygen isotope variations to oceanic temperature history. It is worth a brief mention of two further major advances relevant to Urey s original conception. In 1967, Nicholas Shackleton of Cambridge University reported the first systematic down-core variations in benthic foraminifera (Shackleton, 1967). He argued that benthic fauna, because they lived in the near-freezing bottomwaters of the ocean, would mainly record... 

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