Publication Date:
2023-10-19
Description:
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.
Keywords:
Age, dated; Antarctica; Antarctic ice core chronology (AICC2012); d18O; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dome C; Dome C, Antarctica; 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
Type:
Dataset
Format:
text/tab-separated-values, 114049 data points
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