Oxygen-18 isotope ratios from the EPICA Dome C ice core at 11 cm resolution

• Main Authors: Gkinis, Vasileios, Dahl-Jensen, Dorthe, Steffensen, Jørgen Peder, Vinther, Bo Møllesøe, Landais, Amaëlle, Jouzel, Jean, Masson-Delmotte, Valerie, Cattani, Olivier, Minster, Bénédicte, Grisart, Antoine, Hörhold, Maria, Stenni, Barbara, Selmo, Enricomaria
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Age; dated; Antarctica; Antarctic ice core chronology (AICC2012); d18O; Depth; bottom/max; sediment/rock; top/min; Dome C; EDC; EPICA; EPICA Dome C; European Project for Ice Coring in Antarctica; ice cores; ICEDRILL; Ice drill; Isotope ratio; Mass spectrometer Finnigan MAT 251; mass spectrometry; water isotopes; δ18O; Annals of Glaciology; Antarc*; Antarctic; ice core
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.939445; https://doi.org/10.1594/PANGAEA.939445

Abstract: We present here a high resolution (0.11 m) dataset of the isotopic composition of the ice (δ¹⁸O) from the EPICA Dome-C ice core. The dataset covers the depth range 7.81-3189.89 m (0.05-802.427 ka). Analysis is performed in Copenhagen with a CO~2~ equilibration Mass Spectrometry system (Finnegan MAT 251). Samples of 5 ml are equilibrated with CO~2~ for 6 hours under vibrations, thereafter injected to the mass spectrometer where the ¹⁸O/¹⁶O ratio is obtained on masses 46 and 44. All measurements reported on the SMOW-SLAP scale using a 2-point linear calibration (standards used: Crete: -33.61 ‰ and DC02: -54.11 ‰ . The combined uncertainty of the record is 0.07 ‰. We interpolate the dataset on the AICC2012 chronology.