This data set consists of planktic (right-coiling N. pachyderma) and Benthic
(C. wuellerstorfi) isotopes, lithic abundances (#/g and %of entities in sample
>150µ), and relative abundance of left-coiling N. pachyderma provided versus
meters composite depth and published age.
ODP Site 980: 55.483N, 14.7W, 2179m. depth
Subpolar North Atlantic proxy records document millennial-scale climate ... variations 500,000 to 340,000 years ago. The cycles have an approximately
constant pacing that is similar to that documented for the last glacial cycle.
These findings suggest that such climate variations are inherent to the late
Pleistocene, regardless of glacial state. Sea surface temperature during the
warm peak of Marine Isotope Stage 11 (MIS 11) varied by 0.5° to 1°C, less than
the 4° to 4.5°C estimated during times of ice growth and the 3°C estimated for
glacial maxima. Coherent deep ocean circulation changes were associated with
glacial oscillations in sea surface temperature.