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Rapport Grønlands Geologiske Undersøgelse
Oxygen 18 isotope studies (δ18O) of ice from the large ice sheets of the Polar regions have given rich information about climate and environmental changes during the past c. 150 000 years (150 ka), and probably much longer. This has been demonstrated by results from the deep ice-core drilling programmes on the central part of the Greenland Inland Ice (e.g. Dansgaard et al., 1982; Johnsen et al., 1992) and Antarctica (Lorius et al., 1985; Kouzel et al., 1987). However, the old ice found at depthdoi:10.34194/rapggu.v159.8211 fatcat:t446b247vbbwzi6w35ayvgx644