Benthic foraminiferal stable oxygen isotope ratios (δ¹⁸O) at IODP Site 383-U1540 during Marine Isotope Stage 11

This dataset presents stable oxygen isotope ratios measured on the epibenthic foraminifera Cibicidoides wuellerstorfi and Cibicides kullenbergi at International Ocean Discovery Program Site U1540 (55° 8.47ʹ S, 114° 50.52ʹ W, 3580 m) during Marine Isotope Stage 11. Full replicates were conducted to determine the 1σ-uncertainty of the analyses. The results are expressed in delta-notation (δ¹⁸O) with reference to the Vienna Pee Dee Belemnite (VPDB) standard and were corrected by +0.64 ‰ VPDB to account for disequilibrium effects. The samples were measured with a Thermo Fisher Scientific MAT 253 isotope ratio mass spectrometer coupled to a Kiel IV carbonate preparation device at the Leibniz Laboratory for Radiometric Dating and Stable Isotope Research at Kiel University (Kiel, Germany).