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Variability in the uranium isotopic composition of the oceans over glacial-interglacial timescales

Esat, Tezer; Yokoyama, Yusuke


Uranium-series mass spectrometric analyses of corals from the uplifted last glacial terraces at Huon Peninsula, Papua New Guinea, that grew from 50,000 years ago to 30,000 years ago show systematically low values of 234U/238U, at the time of coral growth, compared with modern corals. When combined with coral data from other studies a systematic trend emerges indicating shifts in the 234U/238U ratio at times of major glacial-interglacial transitions that involve large variations in sea-levels....[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/j.gca.2006.06.013


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