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Crustal Evolution in the SW Part of the Baltic Shield: the Hf Isotope Evidence
Authors:ANDERSEN, T.   GRIFFIN, W. L.   PEARSON, N. J.
Affiliation:1LABORATORY OF ISOTOPE GEOLOGY, MINERALOGICAL–GEOLOGICAL MUSEUM, UNIVERSITY OF OSLO, SARS GATE 1, N-0562 OSLO, NORWAY
2GEMOC KEY CENTRE, DEPARTMENT OF EARTH AND PLANETARY SCIENCES, MACQUARIE UNIVERSITY, SYDNEY, N.S.W. 2109, AUSTRALIA
3CSIRO EXPLORATION AND MINING, NORTH RYDE, N.S.W. 2113, AUSTRALIA
Abstract:The results of a laser ablation microprobe–inductivelycoupled plasma mass spectrometry Lu–Hf isotope study ofzircons in 0·93–1·67 Ga rocks from southNorway indicate that early Proterozoic protoliths of the BalticShield have present-day 176Hf/177Hf
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