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Primordial and recycled helium isotope signatures in the mantle transition zone

Timmerman, Suzette; Honda, Masahiko; Burnham, Antony; Amelin, Yuri; Woodland, S; Pearson, D. Graham; Jaques, Alan; Le Losq, Charles; Bennett, Victoria; Bulanova, G.P; Smith, C.B; Harris, J.W.; Tohver, E


Isotope compositions of basalts provide information about the chemical reservoirs in Earth’s interior and play a critical role in defining models of Earth’s structure. However, the helium isotope signature of the mantle below depths of a few hundred kilometers has been difficult to measure directly. This information is a vital baseline for understanding helium isotopes in erupted basalts. We measured He-Sr-Pb isotope ratios in superdeep diamond fluid inclusions from the transition zone (depth...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: Science
DOI: 10.1126/science.aax5293


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