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Platinum-group elements; a new set of key tracers for the Earth's interior

Jean-Pierre Lorand, Ambre Luguet and Olivier Alard
Platinum-group elements; a new set of key tracers for the Earth's interior
Elements (August 2008) 4 (4): 247-252

Abstract

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 triggered considerable debate about the composition of the late veneer and the extent of reworking of PGE signatures by igneous processes within the Earth's mantle.


ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 4
Serial Issue: 4
Title: Platinum-group elements; a new set of key tracers for the Earth's interior
Affiliation: Museum National d'Histoire Naturelle, Unite de Recherche Mineralogie, Paris, France
Pages: 247-252
Published: 200808
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, International
References: 35
Accession Number: 2008-123219
Categories: Solid-earth geophysicsExtraterrestrial geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Universitaet Bonn, DEU, Federal Republic of GermanyUniversite de Montpellier II, FRA, France
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200847
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