Titanium isotopic evidence for felsic crust and plate ...

3.5 billionyears ago Nicolas D. Greber,1*† Nicolas Dauphas, 1Andrey Bekker,2,3 Matouš P. Ptáček, Ilya N. Bindeman,4 Axel Hofmann3 Earth exhibits a dichotomy in elevation and chemical composition between the continents and ocean floor. Reconstructing when this dich otomy arose is important for understanding ................
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