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<datestamp>2018-01-11</datestamp>
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<title lang=en>Platinum-group elements: A new set of key tracers for the earth's interior</title>
<creator>Lorand, J. P.</creator>
<creator>Luguet, A.</creator>
<creator>Alard, Olivier</creator>
<contributor>Minéralogie, Pétrologie (MP) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Steimann Institüt-Endogene Prozess ; Bonn Universität [Bonn]</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 1811-5209</source>
<source>EISSN: 1811-5217</source>
<source>Elements</source>
<publisher>GeoScienceWorld</publisher>
<identifier>hal-00411483</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00411483</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00411483</source>
<source>Elements, GeoScienceWorld, 2008, 4 (4), pp.247-252. 〈10.2113/GSELEMENTS.4.4.247〉</source>
<identifier>DOI : 10.2113/GSELEMENTS.4.4.247</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.2113/GSELEMENTS.4.4.247</relation>
<language>en</language>
<subject lang=fr>Platinum-group elements</subject>
<subject lang=fr>core</subject>
<subject lang=fr>upper-mantle</subject>
<subject lang=fr>chondrites</subject>
<subject lang=fr>base-metal sulfides</subject>
<subject>[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Due to their "iron-loving" properties, platinum-group elements (PGE) are expected to be stored in the Earth's core. Although very low, at a few parts per billion, PGE concentrations measured in mantle-derived rocks are too high to be in chemical equilibrium with the core. The "late veneer" model offers the best explanation for this paradox-it postulates that a flux of primitive meteorites hit the early Earth after core formation had ceased. However, the inferred PGE composition of the hypothetical primitive mantle exhibits slight positive excesses of Ru, Rh, and Pd compared to the canonical chondritic signature. Such deviations have trigger debate about the composition of the late veneer and the extent of reworking of PGE signatures by igneous processes within the Earth's mantle.</description>
<date>2008</date>
</dc>
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